Simple, lightning-fast
unit conversion.
Convert hundreds of units across 43 categories — length, area, volume, speed, temperature, fuel consumption, shoe sizes, and loads more. Plus live currency rates, updated daily.
Convert anything, instantly.
800+ units
Hundreds of units across 43 categories — Length, Area, Volume, Speed, Power, Temperature, Fuel Consumption, Shoe Sizes, and many more.
Live currency
Convert between 88 currencies with exchange rates updated daily.
Instant results
Type a value and every related unit updates immediately. No "convert" button, no friction.
Hide what you don't use
Streamline your workflow by hiding units you never need. Reorder units and categories to put your favourites on top.
Universal
Native iPhone and iPad support. One app, every device.
Free
Units is free to download and use. No subscriptions, no nag screens.
A closer look
