Converters

Convert between units, formats, and number systems in a click.

Runs in your browser — nothing uploaded
Color ConverterConvert any color between HEX, RGB, HSL, HWB, and OKLCH instantly. Includes a live swatch and one-click copy for each format.QR Code GeneratorGenerate QR codes for URLs, text, Wi-Fi, and more — entirely in your browser. Download as PNG or SVG. No tracking, no uploads.Unix Timestamp ConverterConvert Unix timestamps to human-readable dates and back. Supports seconds and milliseconds, UTC and local time. All in your browser.CSV ↔ JSON ConverterConvert CSV to JSON or JSON to CSV in your browser. Auto-detect delimiter, header row, and types. No upload — your data stays private.MP4 to MP3 ConverterExtract MP3 audio from MP4, MOV, MKV, WebM, and AVI videos right in your browser. Choose the bitrate. Your video never leaves your device.JSON ↔ YAML ConverterConvert JSON to YAML and YAML to JSON in your browser. Preserves order, handles nested data, and flags syntax errors.Number Base ConverterConvert numbers between binary, octal, decimal, hexadecimal, and any base from 2 to 36. Instant, client-side.Unit ConverterConvert length, weight, temperature, volume, time, speed, and area between metric, US, and imperial units. Instant, client-side.CSS Unit Converter (PX, REM, EM, PT)Convert between CSS units — pixels, rem, em, points, and percent — with adjustable base font size. Instant and client-side.Time Zone ConverterConvert a moment in one city to local time everywhere else. Add or remove cities; daylight-saving rules built in. Runs in your browser.HTML ↔ Markdown ConverterConvert between HTML and Markdown both directions. GitHub-flavored syntax, sanitized HTML output, one-click copy. All client-side.UTM Link BuilderBuild campaign URLs with utm_source, utm_medium, utm_campaign and the other Google Analytics parameters. Validation, presets, and one-click copy.JSON to CSV ConverterConvert a JSON array of objects into clean CSV in your browser. Auto-builds headers from every key, escapes quotes correctly. Nothing is uploaded.Roman Numeral ConverterConvert numbers to Roman numerals and Roman numerals back to numbers (1–3999). Instant, two-way, and fully client-side.Data Storage Converter (Bytes, KB, MB, GB, TB)Convert between bytes, kilobytes, megabytes, gigabytes, terabytes, and bits — in decimal (1000) or binary (1024). Instant and fully client-side.Barcode Generator (Code 39)Generate Code 39 barcodes from text or numbers and download them as SVG. Fast, private, and fully client-side.Morse Code TranslatorTranslate text to Morse code and Morse code back to text, with optional audio playback. Two-way, instant, and fully client-side.Binary ↔ Text ConverterConvert text to binary and binary back to text instantly. UTF-8 safe, with space-separated 8-bit bytes. Two-way and fully client-side.Audio Trimmer & CutterTrim and cut audio files to a start and end time, then export as MP3. MP3, WAV, M4A, and more. Runs entirely in your browser — nothing is uploaded.Video Trimmer & CutterTrim and cut video to a start and end time in your browser. Fast, lossless stream copy — no re-encoding, no upload. Your video never leaves your device.Mute Video (Remove Audio)Remove the audio track from a video in your browser. Fast, lossless — the picture is untouched and nothing is uploaded.GIF to MP4 ConverterConvert animated GIFs to MP4 video in your browser. Smaller files that autoplay inline on social and messaging apps. Your GIF never leaves your device.QR Code ScannerScan and decode a QR code from an image file, right in your browser. Reads the text or link inside — no uploads, no tracking.Cooking Measurement ConverterConvert cooking measurements — cups, tablespoons, grams, ounces, millilitres — per ingredient, plus oven temperatures. Fast, private, client-side.Number to Words ConverterSpell out numbers in English words — for cheques, contracts, and forms. Handles decimals, negatives, and a currency mode. Instant and client-side.