ConvertDroid: Unit Converter

Convert almost anything, instantly. ConvertDroid packs 673 units in 68 categories into one clean, fast unit converter that works offline — no account, no fumbling through menus.

EVERY UNIT YOU'LL ACTUALLY NEED
- Length, mass, area, volume, temperature, pressure, speed, density, concentration (by mass and by mole), force, torque, moment of inertia, angle, angular speed, angular acceleration, volumetric flow, viscosity (dynamic and kinematic), and sound level
- Energy, power, electrical resistance, electric current, resistivity, frequency, and time period
- Luminance, illuminance, radioactivity, radiation absorbed dose, radiation exposure, radiation dose rate, and Carbon-14 dating
- Data storage, data transfer rate (now including USB 3/4, Thunderbolt, and WiFi 4-7), transfer-time estimates, video timecode & frame rates, video file size, numeral systems (binary, octal, hex, Base-36, RGB, Unicode), typography (points, picas, twips), and musical intervals
- Everyday time, fuel economy (US, UK & metric mpg), navigation bearings, and SI prefixes
- Aviation: altitude, vertical speed, airspeed, altimeter setting, Jet A and Avgas 100LL fuel weight and volume, fuel flow, and visibility
- International clothing & size charts: men's and women's suits, shirts, shoes, socks, dresses, blouses, stockings, bra band & cup sizes, ring sizes, and hat sizes — across US, UK, EU, Japanese, French, Italian, and Australian systems

BUILT TO ACTUALLY USE, NOT JUST BROWSE
- Custom in-app keypad — no clumsy system keyboard
- Tap any result to copy it straight to your clipboard
- Type "1h 30m" or "30m 1h" — flexible, tolerant input for multi-part values
- Search across all 673 units to jump straight to what you need
- Star up to 12 favorites for one-tap access
- Automatic history of your last 50 conversions
- Adjustable decimal precision and thousands separator (comma or space)

DESIGNED WITH CARE
A warm, neubrutalist look — bold borders, hard shadows, a cream-and-orange palette — built for phone and tablet alike, with dedicated layouts for portrait, landscape, and Tablet Split View.

FREE, WITH AN OPTIONAL ONE-TIME UPGRADE
ConvertDroid is free to use, with a small banner ad. A one-time Remove Ads purchase turns ads off for good — no subscription — and Restore Purchases brings it back on a new device. Bought ConvertDroid before it became free? Thank you! You're recognized automatically and never see ads.

YOUR CONVERSIONS STAY ON YOUR DEVICE
Your conversions, favorites, history, and settings never leave your device, and there's no account to create. Ads are non-personalized, and our privacy policy explains exactly what the ad provider processes to show them.

Whether you're cooking, running lab calculations, buying shoes abroad, checking a fuel load, reading a datasheet's resistor bands, or figuring out how long a file takes to transfer over Thunderbolt or WiFi 7, ConvertDroid has the unit for it.