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.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.