# PocketToolbox Web Tools & Engineering Calculators > PocketToolbox (https://pockettoolbox.org/en) is a collection of 90+ free web tools: file converters, PDF, image, audio and video tools, calculators and developer utilities. The tools run in the browser and files are not uploaded. ## Canonical Resources - Web Tools Directory (English): https://pockettoolbox.org/en - Web Tools Directory (German): https://pockettoolbox.org - Full Technical Reference & Formulas: https://pockettoolbox.org/llms-full.txt ## Tools by Category ### Code - [ASCII / HEX Converter](https://pockettoolbox.org/en/ascii-hex): Convert text to hexadecimal and back. - [Base64 Encoder / Decoder](https://pockettoolbox.org/en/base64): Encode and decode text or data to Base64. - [BIN HEX DEC OCT Converter](https://pockettoolbox.org/en/converter): Convert numbers between binary, hexadecimal, decimal, and octal, and toggle individual bits. - [CSS Formatter / Beautifier](https://pockettoolbox.org/en/css-formatter): Format CSS code for better readability or minify it for production. - [Font Glyph Inspector](https://pockettoolbox.org/en/font-inspector): Inspect font files (TTF, WOFF, WOFF2) to view contained characters (glyphs), unicode ranges, and metadata. - [HTML Encoder / Decoder](https://pockettoolbox.org/en/html-encoder): Convert special characters to HTML entities and back. Important for web development and security. - [JSON Formatter / Minifier](https://pockettoolbox.org/en/json-formatter): Format or minify JSON data. - [Regex Tester](https://pockettoolbox.org/en/regex-tester): Test your regular expressions (Regex) in real-time. Supports match highlighting. - [Syntax Highlighter](https://pockettoolbox.org/en/syntax-highlighter): Auto-detect and highlight code syntax. Export as SVG or Word. - [URL Encoder / Decoder](https://pockettoolbox.org/en/url-encoder): Safely encode and decode URL parameters. - [URL Parser](https://pockettoolbox.org/en/url-parser): Parse URLs into their components: Protocol, Host, Path, Query Parameters, and more. - [WiFi QR Code Generator](https://pockettoolbox.org/en/wifi-qr): Create QR codes to easily connect guests to your WiFi network. ### Files - [3D Viewer](https://pockettoolbox.org/en/3d-viewer): Supported file types: STL, STEP, STP, OBJ, 3MF, GLTF, GLB, PLY, FBX, DAE, IGES. - [All-In-One File Converter](https://pockettoolbox.org/en/file-converter): Universal local converter for images, audio, video, binaries, 3D/CAD, documents, and data. - [Binary Strings Extractor](https://pockettoolbox.org/en/strings-extractor): Extract printable ASCII and Unicode (UTF-16LE) strings from binary files (.exe, .dll, .bin, firmware). - [CSV Viewer & Converter](https://pockettoolbox.org/en/csv-viewer): Open CSV files online, search through them, and convert them to JSON or XML. - [File Analyzer](https://pockettoolbox.org/en/file-analyzer): Analyze files: View MIME types, file size, modification date, and hex headers. - [Fixed Sample Files](https://pockettoolbox.org/en/sample-files): Download deterministic sample files of fixed sizes (1KB to 1GB). - [Hex File Editor & Analyzer](https://pockettoolbox.org/en/hex-editor): Hex and binary editor. View data in HEX, DEC, BIN, or OCT, navigate with customizable page sizes (up to 16 KB) and row widths, inspect values with the data inspector, and edit bytes. - [ICS Calendar Viewer & Creator](https://pockettoolbox.org/en/ics-viewer): Open, inspect, and create .ics / iCalendar files directly in your browser. - [Log File RegExp Filter](https://pockettoolbox.org/en/log-filter): Upload local log files and filter them in real-time using regular expressions or keywords in a color-coded terminal console. - [PDF Tools (Merge, Split & Rotate)](https://pockettoolbox.org/en/pdf-merger): Merge multiple PDFs, reorder, rotate, or delete individual pages, and export custom page ranges. - [Random File Generator](https://pockettoolbox.org/en/random-file): Generate test files with random data in customizable sizes (up to 2 GB). - [SQLite Viewer](https://pockettoolbox.org/en/sqlite-viewer): Open SQLite database files (.sqlite, .db, .sqlite3) locally in your browser, inspect tables, and run SQL queries. - [Zip Archive Builder](https://pockettoolbox.org/en/archive-builder): Create Zip files directly in your browser. Upload files and download the archive. No data leaves your computer. ### Units - [Battery & EV Charge Time Calculator](https://pockettoolbox.org/en/battery-charge-calculator): Calculate charge time, finish time, and costs for EVs and batteries - with charge curve and live tracking. - [Calendar Week Calculator](https://pockettoolbox.org/en/calendar-week): Show current calendar week (CW) and convert date to calendar week. - [Capacitor Charge Time Calculator](https://pockettoolbox.org/en/capacitor-charge-time): Calculate the RC time constant and charge/discharge curve of a capacitor through a resistor, including voltage over time, time to reach a target level, and a visual curve. - [Company Car & Leasing Calculator](https://pockettoolbox.org/en/company-car-calculator): Calculate benefit-in-kind (1%, 0.5% & 0.25% rule), net salary impact, lease factor, and savings compared to private purchase. - [Cron-Job Visualizer](https://pockettoolbox.org/en/cron-visualizer): Create Cron jobs interactively and visualize execution times on a calendar and timeline. - [Date Calculator](https://pockettoolbox.org/en/date-calculator): Calculate the duration between two dates or add/subtract days from a date. - [I²C Pull-up & UART Baud Rate Calculator](https://pockettoolbox.org/en/i2c-uart-calculator): Calculate I²C pull-up resistors from bus capacitance and speed, or find the UART baud rate error for a given MCU clock frequency (ESP32, Arduino, STM32). - [Percentage Calculator](https://pockettoolbox.org/en/percentage-calculator): Calculates percentage value, rate, percentage change, discount with cash discount, VAT, and tip splitting. - [Pomodoro Timer](https://pockettoolbox.org/en/pomodoro-timer): A simple Pomodoro timer for productivity and regular breaks. - [Resistor Calculator (Color Code & SMD)](https://pockettoolbox.org/en/resistor-calculator): Calculate resistance values interactively from 4, 5, and 6 band color codes, convert values back to color codes, or decode SMD markings (3-digit, 4-digit & EIA-96). - [Stopwatch](https://pockettoolbox.org/en/stopwatch): Precise stopwatch with lap times. - [Timezone Planner](https://pockettoolbox.org/en/timezone-planner): Find ideal meeting times and plan global appointments by overlapping multiple timezones. - [Unix Timestamp Converter](https://pockettoolbox.org/en/timestamp): Convert Unix timestamps to human-readable dates and vice versa. - [Voltage Divider Calculator](https://pockettoolbox.org/en/voltage-divider): Calculate output voltage, quiescent current, and power dissipation of voltage dividers or automatically find the best E12/E24/E96 resistor pairs for your target voltage. ### Image - [ASCII Art Generator](https://pockettoolbox.org/en/ascii-generator): Transform images into retro ASCII art. - [Aspect Ratio Calculator](https://pockettoolbox.org/en/aspect-ratio-calculator): Calculates width or height based on an aspect ratio. - [Color Detector & Camera Eyedropper](https://pockettoolbox.org/en/color-detector): Real-time color detection via camera or image: Pixel-exact sampling and area average. - [Color Picker & Converter](https://pockettoolbox.org/en/color-picker): Pick colors and convert between Hex, RGB, HSL, and CMYK. - [Digital Signature Generator](https://pockettoolbox.org/en/signature-generator): Creates digital signatures via freehand drawing, typed text, or photo scan as transparent PNG or SVG. - [Exif Data Viewer](https://pockettoolbox.org/en/exif-viewer): Read metadata such as camera model, exposure settings, timestamp, and GPS coordinates from your photos. - [Favicon Generator](https://pockettoolbox.org/en/favicon-generator): Generate a complete favicon package (ICO, PNG sizes, Apple touch icon, web manifest) from an image, text, or emoji, including ready-to-use HTML code, as a ZIP download. - [HEIC Converter](https://pockettoolbox.org/en/heic-converter): Convert HEIC/HEIF images easily to JPG or PNG directly in your browser. - [Image Batch Processor](https://pockettoolbox.org/en/image-batch-processor): Resize, crop, and convert multiple images at once. - [Image Compressor](https://pockettoolbox.org/en/image-compressor): Compress and resize images (JPEG, PNG, WebP) while maintaining visual quality. - [Image to Palette Extractor](https://pockettoolbox.org/en/palette-extractor): Extract a color palette from any image. - [Pixel Art Maker](https://pockettoolbox.org/en/pixel-art-maker): Create simple 16x16 pixel art and export it as PNG, SVG, or CSS. - [Pixel-Art Sprite Animator](https://pockettoolbox.org/en/sprite-animator): Load a pixel art sprite sheet, slice it into frames, and animate it in a customizable loop. - [QR Code Generator](https://pockettoolbox.org/en/qr-generator): Quickly create QR codes for text or links, directly in your browser. - [Screenshot Tool](https://pockettoolbox.org/en/screenshot-tool): Take screenshots of windows, screens, or browser tabs directly online. - [Sprite Sheet Slicer](https://pockettoolbox.org/en/sprite-slicer): Slice sprite sheets automatically into individual images. Define rows, columns, or fixed sizes and download everything as a ZIP. ### Audio - [Audio Recorder & Frequency Meter](https://pockettoolbox.org/en/audio-recorder): Microphone recording with live spectrum analyzer, VU peak meter, pause/resume, and export to WAV, MP3, or WebM. - [Audio Trimmer](https://pockettoolbox.org/en/audio-trimmer): Trim audio files easily in your browser. Visualize the waveform and export the selection as WAV or MP3. - [Metronome](https://pockettoolbox.org/en/metronome): A precise metronome with different time signatures and visual display. - [MIDI Viewer](https://pockettoolbox.org/en/midi-viewer): Read MIDI signals from your connected input device/keyboard in real-time. - [Morse Code Audio Translator](https://pockettoolbox.org/en/morse-translator): Translate text to Morse code, play the audio signals, and visualize them with a flashing signal lamp. - [Signal Generator](https://pockettoolbox.org/en/signal-generator): Generate various test tones and frequencies (Sine, Square, Noise). - [Synthesizer](https://pockettoolbox.org/en/synthesizer): Modular software synthesizer with oscillators, filter, ADSR faders, LFO, effects, MIDI, and keyboard. ### Video - [Screen Recorder](https://pockettoolbox.org/en/screen-recorder): Record your screen, windows, or browser tabs. No download required. - [Video Editor](https://pockettoolbox.org/en/video-editor): Trim and sequence video clips, insert images, add music and mix audio. Export as MP4 or WebM. - [Video Player](https://pockettoolbox.org/en/video-player): Play video files or URLs. Features: Volume boost, playback speed, screenshot and more. - [Video-to-GIF Converter](https://pockettoolbox.org/en/video-to-gif): Convert short videos (MP4, WebM) client-side directly in the browser into animated GIFs with customizable FPS and resolution. - [Webcam Recorder](https://pockettoolbox.org/en/webcam-recorder): Online camera tool: Take photos and record videos directly via your webcam. ### Web - [Chmod Calculator](https://pockettoolbox.org/en/chmod-calculator): Easily calculate Linux file permissions (chmod) in numeric and symbolic formats. - [DNS-over-HTTPS Lookup](https://pockettoolbox.org/en/dns-lookup): Find the IP address behind a domain and query DNS records (A, AAAA, MX, TXT) securely over HTTPS. - [Flexbox Playground](https://pockettoolbox.org/en/flexbox-playground): Interactive guide to CSS Flexbox properties. - [JWT Decoder](https://pockettoolbox.org/en/jwt-decoder): Decode JSON Web Tokens (JWT) to view header, payload, and signature. - [Keycode Info](https://pockettoolbox.org/en/keycode-info): Shows information about pressed keys. - [Meta Tag Generator](https://pockettoolbox.org/en/meta-tag-generator): Generate HTML SEO meta tags for your website. - [Subnet & CIDR Calculator](https://pockettoolbox.org/en/subnet-calculator): Calculate network boundaries, IP address ranges, netmasks, and usable hosts for IPv4. ### Text - [ASCII Flow Diagram Designer](https://pockettoolbox.org/en/ascii-diagram): Draw flowcharts, boxes, arrows, and text using plain text characters (ASCII) directly in your web browser. - [Case Converter](https://pockettoolbox.org/en/case-converter): Convert text between Uppercase, Lowercase, CamelCase, and more. - [Diff & Patch Generator](https://pockettoolbox.org/en/diff-generator): Compare two texts line-by-line, visualize differences, and download the output as a patch file. - [Local OCR](https://pockettoolbox.org/en/ocr-tool): Extract text from images directly in your browser. Your data never leaves your computer. Supports multiple languages. - [Lorem Ipsum Generator](https://pockettoolbox.org/en/lorem-ipsum): Generate placeholder text for your designs. - [Markdown Editor](https://pockettoolbox.org/en/markdown-editor): Write Markdown and see the preview instantly. - [Search & Replace](https://pockettoolbox.org/en/search-replace): Search and replace text online. Supports regular expressions (regex) and case sensitivity. - [Text Diff Checker](https://pockettoolbox.org/en/text-diff): Compare two text contents and see what changed between them. - [Word Counter](https://pockettoolbox.org/en/word-counter): Free online word counter and character counter. Count words, characters, sentences, and paragraphs in real-time. ### Security - [Certificate Checker](https://pockettoolbox.org/en/certificate-extractor): Analyze and extract signatures and certificates from executable files (.exe, .efi) or certificate files. - [Hash & File Checksum](https://pockettoolbox.org/en/hash-generator): Generate hashes from text or calculate file checksums (MD5, SHA256...) directly in your browser. - [Password Generator](https://pockettoolbox.org/en/password-generator): Generate strong, secure random passwords directly in your browser. - [UUID Generator](https://pockettoolbox.org/en/uuid-generator): Generate secure random UUIDs (Version 4). Bulk generation supported. ### System - [Controller Tester](https://pockettoolbox.org/en/controller-tester): Supports PlayStation (PS5, PS4), Xbox (Series, One, 360), Nintendo Switch, and generic USB/Bluetooth gamepads. - [Device Info](https://pockettoolbox.org/en/device-info): Displays detailed information about your current device, browser, screen, and more. - [EDID Viewer](https://pockettoolbox.org/en/edid-viewer): Decode and analyze 128 byte EDID binary data to view supported timings, texts, and settings. - [Random Generator](https://pockettoolbox.org/en/random-generator): Well, the name pretty much says it all, right? - [Serial Terminal](https://pockettoolbox.org/en/serial-terminal): Free web-based Serial Terminal and serial monitor directly in your browser. Connect via Web Serial API to any COM port, USB-UART adapter, or serial interface, send commands, and analyze data in real time without installation. ## Popular Tasks - [Convert JPG to PDF](https://pockettoolbox.org/en/jpg-to-pdf): Save photos and scans as PDF without signing up and without uploading the images. Several JPGs at once, download one by one or as a ZIP. - [Convert PNG to JPG](https://pockettoolbox.org/en/png-to-jpg): Turn PNG images into JPGs and often save more than half the file size. Many files at once, free and without upload. - [Convert WebP to JPG](https://pockettoolbox.org/en/webp-to-jpg): Saved an image from the web and it will not open? Convert WebP files to JPG so they work in any program. Free and without upload. - [Convert Images to WebP](https://pockettoolbox.org/en/convert-image-to-webp): Convert JPG and PNG to WebP so your website loads faster. Good for blogs, shops and WordPress. Free, and the images stay on your computer. - [Convert HEIC to JPG](https://pockettoolbox.org/en/heic-to-jpg): Convert iPhone photos from HEIC to JPG without an app and without uploading. Afterwards they open on Windows, in Office and on any website. - [Convert SVG to PNG](https://pockettoolbox.org/en/svg-to-png): Convert logos and icons from SVG to PNG and keep the transparent background. For PowerPoint, Word, social media and anywhere SVG does not work. - [Convert JPG to PNG](https://pockettoolbox.org/en/jpg-to-png): Save JPG images as PNG, for example when a program or form only accepts PNG. Several files at once and without uploading. - [Convert PNG to PDF](https://pockettoolbox.org/en/png-to-pdf): Save screenshots and graphics as PDF, for invoices, receipts or attachments. Several PNGs at once, no sign-up. - [Convert PNG to ICO](https://pockettoolbox.org/en/png-to-ico): Turn a PNG into an ICO file, for a folder icon on Windows or as favicon.ico for a website. Free and without uploading. - [Convert WebP to PNG](https://pockettoolbox.org/en/webp-to-png): Save WebP images as PNG with a transparent background. Good for logos and graphics from the web that you want to edit further. No upload. - [Convert HEIC to PNG](https://pockettoolbox.org/en/heic-to-png): Convert iPhone photos from HEIC to lossless PNG, for example for editing. Several photos at once, no app and no upload. - [Convert HEIC to PDF](https://pockettoolbox.org/en/heic-to-pdf): Save documents, receipts or IDs photographed with your iPhone straight as PDF. No upload, so it works for confidential papers too. - [Convert AVIF to JPG](https://pockettoolbox.org/en/avif-to-jpg): Convert AVIF images to JPG so they open in Windows Photos, Office and older programs. Free, no upload. - [Convert BMP to JPG](https://pockettoolbox.org/en/bmp-to-jpg): Convert large BMP files to JPG and usually save over 90 percent of the space. Many images at once, no upload. - [Convert TIFF to JPG](https://pockettoolbox.org/en/tiff-to-jpg): Convert TIFF files from a scanner or camera into handy JPGs for sending or uploading. No upload, several files at once. - [Convert ICO to PNG](https://pockettoolbox.org/en/ico-to-png): Save a favicon or Windows icon in ICO format as PNG, for a presentation or for editing. No upload. - [Image to Base64](https://pockettoolbox.org/en/image-to-base64): Turn images into a Base64 data URI to embed them directly in HTML, CSS, email templates or JSON. No upload. - [Compress & Resize Images](https://pockettoolbox.org/en/compress-image): Shrink photos that are too large for email, job portals or your website. JPG, PNG and WebP, with a before and after comparison and no upload. - [Create a QR Code](https://pockettoolbox.org/en/create-qr-code): Create a QR code for a link, text or contact details and save it as PNG or SVG. No sign-up, and the code never expires. - [Crop an Image to a Square](https://pockettoolbox.org/en/crop-image-to-square): Turn photos into squares for Instagram, profile pictures or shop listings. Many images at once, without uploading them. - [Resize Images](https://pockettoolbox.org/en/resize-image): Resize images to a set width or height in pixels, with or without a fixed aspect ratio. For whole folders at once, without uploading. - [Make a Photo Black and White](https://pockettoolbox.org/en/black-and-white-photo): Turn color photos into grayscale, for application photos, print templates or just for the look. Many images at once, no app and no upload. - [Copy Text from an Image](https://pockettoolbox.org/en/image-to-text): Pull text out of photos, screenshots and scans and copy it. Recognizes English, German, French and Spanish, and the images stay on your device. - [View EXIF Data](https://pockettoolbox.org/en/view-exif-data): See what a photo contains: camera, lens, exposure, capture time and GPS position. The photo is not uploaded for this. - [Color Palette from an Image](https://pockettoolbox.org/en/color-palette-from-image): Extract the main colors of a photo or logo as HEX codes. Handy for web design, presentations and mood boards. - [Create a Digital Signature](https://pockettoolbox.org/en/create-signature): Draw your signature with mouse, finger or stylus, or photograph it from paper, and save it as a PNG with a transparent background. For PDFs, Word and email. - [Merge PDF Files](https://pockettoolbox.org/en/merge-pdf): Combine several PDFs into one file, change the order, rotate or delete pages. The documents are not uploaded, which suits contracts and job applications. - [Split a PDF](https://pockettoolbox.org/en/split-pdf): Pull single pages or page ranges out of a PDF and save them as a new file. No upload, so it is fine for bank statements and contracts. - [Delete Pages from a PDF](https://pockettoolbox.org/en/delete-pdf-pages): Remove blank, duplicate or unneeded pages from a PDF and fix the page order. Free, no sign-up, and the file stays with you. - [Rotate a PDF](https://pockettoolbox.org/en/rotate-pdf): Rotate single pages or a whole PDF by 90 degrees and save it so it opens the right way up next time. No upload. - [Convert CSV to JSON](https://pockettoolbox.org/en/csv-to-json): Convert CSV files from Excel or an export to JSON. The first row becomes the field names. No upload, so customer data is fine too. - [Convert JSON to CSV](https://pockettoolbox.org/en/json-to-csv): Save JSON data from an API or an export as a CSV table to open it in Excel or Google Sheets. No upload. - [Convert XML to JSON](https://pockettoolbox.org/en/xml-to-json): Convert XML files such as feeds, exports or configs to JSON. Free and without upload, fine for internal data too. - [Convert YAML to JSON](https://pockettoolbox.org/en/yaml-to-json): Convert YAML files like docker-compose, GitHub Actions or Kubernetes manifests to JSON. No upload, secrets stay on your machine. - [Convert STL to OBJ](https://pockettoolbox.org/en/stl-to-obj): Convert 3D models from STL to OBJ, for Blender, game engines or 3D viewers. PLY, OFF and DXF are possible too, no upload. - [Convert MP4 to MP3](https://pockettoolbox.org/en/mp4-to-mp3): Save the audio track of a video as MP3. Works with MP4, MOV, WebM and MKV, without upload or extra software. Handy for talks, interviews and voice messages. - [Convert WAV to MP3](https://pockettoolbox.org/en/wav-to-mp3): Convert large WAV recordings to MP3 and save around 90 percent of the space. Also works with M4A, OGG and FLAC. Free, and the files stay with you. - [Convert Video to GIF](https://pockettoolbox.org/en/convert-video-to-gif): Turn a short clip into an animated GIF: pick the section, set size and frame rate, done. No watermark and no upload. - [Cut an MP3](https://pockettoolbox.org/en/cut-mp3): Trim the start and end of an MP3, for a ringtone, an intro or a voice message. With a waveform and preview, no software needed. - [Convert M4A to MP3](https://pockettoolbox.org/en/m4a-to-mp3): Convert M4A files such as iPhone voice memos to MP3. Then they play on every device and in every program. No upload. - [Record Your Screen](https://pockettoolbox.org/en/screen-recorder-online): Record your screen, a single window or a browser tab as a video. No installation, no watermark and no time limit. - [Test Your Microphone](https://pockettoolbox.org/en/microphone-test): Check before a video call whether your microphone works and how you sound. With level meter, frequency display and a test recording, nothing is transmitted. - [Test Your Webcam](https://pockettoolbox.org/en/webcam-test): Check that your camera works and how you look on screen before the meeting starts. With photo and test video, and nothing gets uploaded. - [Online Tone Generator](https://pockettoolbox.org/en/online-tone-generator): Play a sine, square wave or noise at any frequency between 20 and 20,000 Hz. For testing speakers, subwoofers and headphones. - [Online Metronome](https://pockettoolbox.org/en/online-metronome): Free metronome for practice: tempo from 20 to 300 BPM, selectable time signature, accented first beat and tap tempo. Runs in the browser, on your phone too. - [Convert MOV to GIF](https://pockettoolbox.org/en/mov-to-gif): Turn iPhone videos and Mac screen recordings (MOV) into an animated GIF. Choose section, size and frame rate, no watermark. - [Convert MP3 to WAV](https://pockettoolbox.org/en/mp3-to-wav): Save MP3 as WAV when a program, a sampler or a phone system requires WAV. Several files at once, no upload. - [Convert FLAC to MP3](https://pockettoolbox.org/en/flac-to-mp3): Convert FLAC music to MP3 so it fits on your phone, in the car or on an old MP3 player. Whole albums at once, no upload. - [Convert OGG to MP3](https://pockettoolbox.org/en/ogg-to-mp3): Convert OGG files such as exported voice notes to MP3 so they play on every device. Free and without upload. - [What Week Number Is It?](https://pockettoolbox.org/en/what-week-number-is-it): The current week number at a glance, counted according to ISO 8601. Plus the week number for any other date. - [VAT Calculator](https://pockettoolbox.org/en/vat-calculator): Calculate from net to gross or back, with the VAT rates for Germany, Austria and Switzerland. Shows the VAT amount too. - [Days Between Two Dates](https://pockettoolbox.org/en/days-between-dates): How many days, weeks and months are between two dates? For deadlines, vacations, pregnancy or the countdown to a birthday. - [German Company Car Tax Calculator](https://pockettoolbox.org/en/company-car-tax-germany): Calculate the taxable benefit of a company car in Germany: 1% for combustion cars, 0.5% for plug-in hybrids, 0.25% for EVs, plus commute. Including the effect on net pay. - [EV Charging Time Calculator](https://pockettoolbox.org/en/ev-charging-time-calculator): How long does an EV take to charge at a wall box, a household socket or a fast charger? With charging losses, finish time, cost and added range. - [Time Zone Converter](https://pockettoolbox.org/en/time-zone-converter): Convert times between cities and time zones and see at a glance when a meeting falls within everyone's working hours. - [Strong Password Generator](https://pockettoolbox.org/en/strong-password-generator): Generate long, random passwords. You choose length and character types, and the password is created on your device and not stored anywhere. - [Character Counter](https://pockettoolbox.org/en/character-counter): Count characters with and without spaces, words, sentences and reading time as you type. For applications, essays, social media and meta descriptions. - [Online Stopwatch](https://pockettoolbox.org/en/online-stopwatch): Simple stopwatch in your browser with lap times. For sports, talks, cooking or game nights, no app and no sign-up. - [Roll Dice Online](https://pockettoolbox.org/en/roll-dice): Roll one or more dice online with a total. Including d4, d8, d10, d12 and d20 for tabletop games. For when the real dice go missing. - [Flip a Coin](https://pockettoolbox.org/en/flip-a-coin): Heads or tails? Flip a coin online when you do not have one at hand. With a counter for heads and tails across several flips. - [Gamepad Tester](https://pockettoolbox.org/en/gamepad-tester): Test a PS5, PS4, Xbox or Switch controller in your browser: buttons, triggers, stick drift and vibration. Via USB or Bluetooth, no software. ## Categories - [Online Image Tools](https://pockettoolbox.org/en/image-tools): Free image tools: compress and convert images, pick colors, view EXIF data and create QR codes. Everything runs locally in your browser, no upload. - [Online File & PDF Tools](https://pockettoolbox.org/en/file-tools): Convert files, merge PDFs, create ZIP archives and inspect files. Free and safe, because nothing is uploaded. - [Online Video Tools](https://pockettoolbox.org/en/video-tools): Cut videos, convert them to GIF, record your screen and webcam. Free video tools in your browser, no upload and no watermark. - [Online Audio Tools](https://pockettoolbox.org/en/audio-tools): Record, trim and convert audio, plus metronome, synthesizer and signal generator. Free audio tools in your browser, no upload. - [Online Calculators](https://pockettoolbox.org/en/calculators): Free online calculators: percentages, dates, time zones, resistors, voltage dividers, battery charge time, company cars and more. Fast and without sign-up. - [Online Developer Tools](https://pockettoolbox.org/en/developer-tools): Format JSON, test regex, Base64, URL and HTML encoding, format CSS: free developer tools in your browser. Your data stays local. - [Online Text Tools](https://pockettoolbox.org/en/text-tools): Count words, change case, compare texts, search and replace and Lorem Ipsum. Free text tools in your browser. - [Web & Network Tools](https://pockettoolbox.org/en/web-tools): DNS lookup, subnet calculator, JWT decoder, meta tag generator and chmod calculator. Free web and network tools for webmasters and admins. - [Security Tools](https://pockettoolbox.org/en/security-tools): Generate strong passwords and UUIDs, compute hashes, inspect certificates. Free security tools that run locally in your browser. - [System & Hardware Tools](https://pockettoolbox.org/en/system-tools): Device info, controller tester, EDID viewer, serial terminal and more: free system tools right in your browser. Every tool, task and category page is also available as Markdown: append ".md" to the URL (e.g. https://pockettoolbox.org/en/jpg-to-pdf.md).