ConvertDroid: Unit Converter

The Zardoz Group

About this app

Convert almost anything, instantly. ConvertDroid packs 630 units across 60 categories into one clean, fast, offline unit converter — no ads, 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
- 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 630 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.

PRIVATE BY DESIGN
Everything runs on your device. No account, no ads, no data collected, nothing shared with third parties — your conversions stay yours.

Whether you're cooking, running lab calculations, buying shoes abroad, 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.

What’s new

New aviation conversions for altitude, airspeed, fuel, visibility, vertical speed, and more—alongside 68 categories and 673 units for everyday conversion needs.