Convertly: Unit Converter

Convertly is a unit converter for metric and imperial measurements, built around one idea: you shouldn't have to hunt through a giant table to find the unit you want. Type what you're looking for and convert.

INSTANT, CROSS-CATEGORY SEARCH
Just start typing. Search "kilo" and see kilogram, kilometer and kilometers per hour together — no matter which category they belong to. No tabs to click through, no scrolling past units you don't need.

LIVE, TWO-WAY CONVERSION
Change either side and the other updates instantly. Swap the two units with a single tap: cm to inches becomes inches to cm.

EIGHT CATEGORIES, 52 UNITS
• Length — millimeter, centimeter, meter, kilometer, inch, foot, feet and inches, yard, mile
• Weight — milligram, gram, kilogram, tonne, ounce, pound
• Temperature — Celsius, Fahrenheit, Kelvin
• Volume — milliliter, liter, US gallon, quart, pint, cup, fluid ounce
• Area — square meter, square kilometer, hectare, square foot, acre, square mile
• Speed — meter/second, km/h, mph, knot
• Data storage — bit, byte, kilobyte, megabyte, gigabyte, terabyte, plus KiB, MiB, GiB and TiB
• Time — second, minute, hour, day, week, month, year

The everyday conversions are all here: kg to lbs, cm to inches, km to miles, Celsius to Fahrenheit, liters to gallons, m² to ft², km/h to mph, MB to GB, hours to minutes — metric to imperial and back.

FEET AND INCHES, WITH FRACTIONS
Enter 5' 7 3/8" straight off the tape measure with the built-in fraction keypad, and read results to the nearest 1/2 down to 1/32 of an inch. Made for carpentry, DIY and the job site.

EVERY UNIT AT ONCE
One tap shows your amount converted into every unit of the category. On tablets and unfolded foldables, the full list sits right next to the converter.

PICKS UP WHERE YOU LEFT OFF
Convertly remembers the last category and pair of units you used, so the conversion you do every day is ready the moment you open it.

COPY WITH ONE TAP
Copy any result to your clipboard, already formatted with its unit.

WORKS FULLY OFFLINE
Every conversion happens on your device. No internet connection required — handy while traveling, cooking, studying or on a job site.

SIX LANGUAGES
English, Spanish, Hindi, Brazilian Portuguese, Romanian and Polish. Convertly follows your phone's language automatically.

PRIVATE BY DEFAULT
What you type never leaves your phone. Convertly is free, supported by a single banner ad at the bottom of the screen, and never asks for your location, contacts, files or camera. See our privacy policy for details.

No clutter. No giant tables. Just type and convert.