All-in-One Unit Converter

A fast, offline unit converter that does the math properly. Type one value and instantly see it in every unit of the category at the same time — no back-and-forth, no waiting. EVERY UNIT, ONE APP • Length, mass, temperature, area, volume, speed, time, data, energy, power, pressure, angle and fuel economy • Type once and read your value in every unit of the category at a glance • Tap any unit to make it the target, or swap source and target with one button CONVERSIONS DONE RIGHT Most converters only multiply by a factor — so they get temperature and fuel economy wrong. This one uses a real conversion engine: • Temperature is exact: °C, °F and Kelvin • Fuel economy is exact: L/100km, km/L and mpg (US & UK) — even the inverted ones • Adaptive number formatting, so results read cleanly without floating-point tails BUILT FOR EVERYDAY USE • Pin the conversions you use most for one-tap access on the Saved tab • Recent conversions are remembered automatically • Adjust significant digits to trade precision for readability • Light, dark and auto theme PRIVATE & OFFLINE • 100% offline — no internet needed, ever • No sign-in, no account, no tracking • Your pins and settings stay on your device Whether you're cooking, studying, travelling, doing DIY, or working with data sizes, this is the only converter you need — fast, accurate and out of your way.