Utilities

Runs entirely in your browser. Uses radian (rad) as base; converts degree/radian/grad/turn/arcmin/arcsec.

Uses VA as the base. Converts mVA, kVA, MVA, GVA bi‑directionally. Note: active power P = S × cosφ (S: apparent power).

Runs entirely in your browser. Uses square metre (m²) as base; supports metric and US/Imperial units.

Runs fully in your browser. Refresh this page or try the embedded URL below (may be blocked by X-Frame-Options).

Uses byte (B) as base. Note: 1 B = 8 b; 1 kB = 1000 B; 1 KiB = 1024 B; supports PB/EB and PiB/EiB.

Runs entirely in your browser. Supports case folding, whitespace filtering, normalization and CSV export.

Runs fully in your browser. Choose fields, cm/inch switch, copy CSV, export SVG/PNG.

Convert between HEX, RGB and HSL in the browser. Supports alpha and live preview.

Pick or type a color to get its inverted color and best-contrast (black/white) with live previews.

Quick presets and custom duration; shows a toast and plays a 3s chime when finished.

Build gradients locally and copy CSS/Tailwind instantly.

Runs entirely in your browser. Convert between A, mA and kA.

Delete Duplicate Lines, runs in your browser.

Runs entirely in your browser. Uses joule (J) as base. Note: 1 Wh = 3600 J.

Runs entirely in your browser. Uses a built-in email regex, with options for deduping, lowercasing, custom separator, and one-click copy.

Runs entirely in your browser. Supports integers, decimals, scientific notation, with de-dup and sorting options.

Favicon Fetcher, runs in your browser.

Inspired by dson

Runs entirely in your browser: live FPS meter with detailed screen/device info.

Uses Hz as the base. Bridges frequency and angular/rotational speed. Note: 1 Hz = 60 rpm = 360 °/s = 2π rad/s.

Runs entirely in your browser. Uses lux as base; supports lx / mlx / µlx / klx / phot / foot‑candle / nox.

Uses metre (m) as base; converts mm, cm, m, km, in, yd, ft-us, ft, mi, plus nmi/ch/fur/Å.

Renders locally in your browser. Choose shape/colors/font and export PNG or ICO.

Runs entirely in your browser. Supports multiple prize tiers and ceremonial tier-by-tier draws.

Runs entirely in your browser. Uses gram (g) as base. Here mt = metric tonne, t = short ton (US).

Runs entirely in your browser: replace line breaks with spaces, optionally collapse extra whitespace and trim.

Runs entirely in your browser. Uses seconds-per-metre (s/m) as the internal base; converts min/km, s/m, min/mi, s/ft.

Uses watt (W) as base. Converts mW, W, kW, MW, GW and hp (mechanical / metric).

Runs entirely in your browser. Uses pascal (Pa) as base; converts Pa, kPa, MPa, hPa, bar, torr, psi, ksi.

QR Generator, runs in your browser.

Recommended

Uses VARh as the base. Converts mVARh, kVARh, MVARh, GVARh bi‑directionally. Note: reactive energy integrates reactive power over time.

Remove Whitespace, runs in your browser.

Signature Canvas, runs in your browser.

Runs entirely in your browser. Replace spaces with newlines. Optionally treat all whitespace (spaces/tabs) as delimiters, collapse consecutive whitespace, trim items, and filter empty lines.

Runs entirely in your browser. Uses metres per second (m/s) as base; converts m/s, km/h, mph, ft/s, knots.

Runs entirely in your browser. Use a custom delimiter or a regular expression. Optionally trim items and filter empty results.

Millisecond-precision with naming, laps, and persistent history.

String Hex Converter, runs in your browser.

Runs entirely in your browser. Convert Tab ↔ Spaces with adjustable width. Optionally convert only leading indentation.

Runs entirely in your browser. Note: temperature scales have offsets; precise formulas are used.

Each word’s first letter is uppercased while the remaining letters are lowercased automatically.

Runs entirely in your browser. Choose line/word/character granularity; optionally ignore case and whitespace.

The tool detects URLs, strips trailing punctuation, and removes duplicates automatically.

Runs entirely in your browser. Supports invert case, UPPERCASE, lowercase, Title Case, and Sentence case.

Runs entirely in your browser. Supports plain/regex, case-sensitivity, whole-word and multiline.

Runs locally. RED-style cover; supports multiline subtitle, partial highlight, drag layout, sticker library.

Runs entirely in your browser. Separate letters with spaces and words with /.

Runs entirely in your browser. Supports text ⇄ Unicode escapes (\\uXXXX / \\u{XXXXX} / U+XXXX).

Every letter in your text will be converted to uppercase automatically.

Runs entirely in your browser. Uses second (s) as base; converts ns, μs, ms, s, min, h, d, wk. Also includes yr (Julian year = 365.25 d) and mo (30‑day approx).

Convert between UNIX timestamps and date/time entirely in your browser. Supports seconds/milliseconds and time zones.

URL Encoder, runs in your browser.

Recommended

Runs entirely in your browser. Generates RFC 4122 compliant UUID v4. Batch generation with hyphen-less and uppercase options.

Recommended

Runs entirely in your browser. Convert between V, mV and kV.

Runs entirely in your browser. Supports metric, US customary, and Swedish cookbook units. Enter a value and pick the unit to see all conversions.

Runs entirely in your browser. Counts Han characters, words, lines, paragraphs, and UTF‑8 bytes.

Recommended

MD5 hash for text or files