Universal Unit Converter

Unit Converter is a fast, offline-first conversion tool covering nearly every unit you'll ever need — from everyday length and weight conversions to specialized engineering, electrical, and radiology units.

FEATURES

• 1,700+ units across 79 categories, organized into 9 groups: Common, Engineering, Heat, Fluids, Light, Electricity, Magnetism, Radiology, and Miscellaneous
• Live currency exchange rates, refreshed automatically when you're online, with reliable built-in reference rates when you're not
• Number base conversion — binary, octal, decimal, hexadecimal, and any base from 2 to 36
• "Convert to all units" view — see one value converted to every unit in a category at once
• Favorites — pin the conversions you use most for quick access
• History — every conversion you perform is saved locally so you can revisit it
• Home-screen widget showing your top favorite conversion
• Works fully offline — only Currency Conversion needs a connection, for live exchange rates
• No ads, no account required, no data collection

CATEGORIES INCLUDE

Distance & Length, Weight & Mass, Currency, Volume, Temperature, Area, Pressure, Energy, Power, Force, Time, Velocity, Angle, Fuel Consumption, Data Storage, Numbers (base conversion), Sound, Data Transfer, Typography, Acceleration, Electric Current, Resistance, Capacitance, Inductance, Magnetic Flux, Radiation, and many more.

PRIVACY

Unit Converter doesn't require an account, doesn't show ads, and doesn't collect or share personal data. Favorites and history are stored only on your device. The only network requests the app makes are anonymous lookups of public currency exchange rates.

Have feedback or found an issue? We'd love to hear from you.