Convert Units Calculator
Every unit.
One tap. Zero clutter.
Type a number once and read it in every unit that matters — the big answer up top, the rest of the category right below. 70+ units across 10 categories, converting as you type, working offline, one tap to copy.
Other conversions
From teaspoons to terabytes.
Metric, imperial and US customary, side by side — the units you actually use, none of the ones you don't.
The result you asked for — and the six you didn't.
26.2 miles is 42.16 kilometers. It's also 138,336 feet, if you were wondering — the Other Conversions list keeps the whole category in view, so a follow-up question never means another round trip.
- Results update on every keystroke — no Convert button
- Swap flips from and to in one tap
- Tap the big result — or any row — to copy it
- Commas welcome: "1,609.344" parses just fine
- Extreme results switch to scientific notation, not "0"
Small app. Fast answers.
One converter screen that does everything, in light and dark. That's the whole app, on purpose.
Oven math, handled
350 °F is 176.67 °C — and 449.82 K, since the list keeps score.
Recipes, translated
2 cups is 473 mL — or 96 teaspoons, if that's how your evening is going.
Bits to terabytes
256 GB, spelled out in MB, KB, bytes and bits without a calculator.
Dark mode included
Follows your system automatically — deep navy, same speed.
Everything loads before you finish typing.
Instant, as you type
No Convert button, no spinner. Every keystroke recalculates the whole category.
Swap in one tap
Going the other way? Flip from and to instantly — the answer follows.
Tap to copy
The big result or any row lands on your clipboard, formatted and paste-ready.
Works offline
Fixed standard factors, computed on the device. Airplane mode changes nothing.
Dark mode
Follows your system appearance — bright by day, deep navy after hours.
Nothing to set up
No account, no sign-in, no onboarding tour. Open it, type, done.
The short answers.
What can it convert?
Ten categories, 70+ units: length (mm to nautical miles), weight (mg to stone), temperature (°C, °F, K), volume (teaspoons to cubic meters), area (mm² to square miles, hectares and acres included), speed (m/s to knots), time (milliseconds to weeks), data (bits to terabytes), energy (joules to BTU) and pressure (pascals to atmospheres).
Does it work offline?
Yes. Every conversion is computed on your device from fixed, standard factors — no connection needed, ever. That's also why there's no currency tab: exchange rates go stale, physics doesn't.
Is it free?
Yes. The app is free and shows a small banner ad via Google AdMob to keep it that way. No in-app purchases, no subscriptions, no locked features. On iOS you may see one App Tracking Transparency prompt; declining just means non-personalized ads.
How accurate is it?
Conversions use exact standard factors — 1 mile is 1,609.344 meters, 1 pound is 0.45359237 kilograms — shown to six decimal places. Extremely large or tiny results switch to scientific notation instead of rounding to zero.
Can I copy results?
Yes — tap the big result, or any row in Other Conversions, and it's on your clipboard ready to paste into a message, a doc or a spreadsheet.
Phone or tablet?
Both. It runs on iPhone, iPad and Android phones and tablets, in portrait, with full dark-mode support everywhere.
Stop googling the formula.
The next conversion takes three seconds, and the one after that is already on screen.
Free · works offline · no account