UnitWise: Unit Converter

UnitWise is a fast, accurate unit converter and measurement converter that works offline. Type a number and the answer appears instantly, in any unit you need. No sign-up and no internet required, so your unit converter is always ready.

EVERYDAY CONVERSIONS, ONE TAP AWAY
Convert miles to km, Fahrenheit to Celsius, pounds to kg, gallons to liters, inches to cm, feet to meters and square feet to square meters in seconds. Results update as you type, and you can swap units with one tap or copy the result to paste anywhere.

A METRIC CONVERTER BUILT FOR THE US
US units come first: inches, feet, yards, miles, ounces, pounds, cups, tablespoons, teaspoons, fluid ounces, gallons, mph, psi and BTU. Metric and imperial units sit right alongside, so metric to imperial and back is always easy.

COOKING AND KITCHEN CONVERSIONS
A cooking converter for real recipes: cups, tablespoons, teaspoons, fluid ounces, pints, quarts and sticks of butter. Convert cups to grams for flour, sugar, butter, milk, honey, rice, oats and more, using typical USDA weights per cup.

25 CATEGORIES, 400+ UNITS
• Length converter: miles, km, feet, inches, yards, meters, nautical miles, light-years
• Weight converter: lbs to kg, ounces to grams, stones, carats, troy ounces
• Temperature converter: Fahrenheit, Celsius, Kelvin, Rankine
• Volume converter: gallons, liters, cups, quarts, cubic feet, US and UK units
• Area converter: square feet, square meters, acres, hectares
• Speed converter: mph to km/h, knots, meters per second
• Fuel economy: mpg to L/100 km
• Pressure converter: psi to bar, kPa, inHg, atm
• Energy, power, force and torque: BTU, kWh, calories, horsepower, lb-ft, N·m
• Data storage converter: MB to GB, TB, and binary units like GiB
• Data transfer rate, time, angle, frequency, density, flow rate, acceleration, viscosity, illuminance and radiation
• Electric units: current, voltage, resistance and charge (mAh)

ACCURATE YOU CAN TRUST
Every conversion factor follows official NIST and SI definitions and is checked by automated tests, so this conversion calculator gives the right answer every time.

MADE TO BE QUICK
• Search any unit by name or symbol, like "mile", "km", "psi" or "cup"
• Star your favorite units so they stay at the top
• See your number in every unit of a category at once
• Recent conversions are saved; tap one to open it again
• Choose how many decimal places to show

OFFLINE AND PRIVATE
This unit converter works offline, with no account needed. Your history and settings stay on your phone.

LIGHT AND DARK MODE
A clean, modern design that follows your phone's theme, or pick light or dark in Settings.

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