Data unit converter

Convert between bits, bytes, kilobytes, megabytes, gigabytes and terabytes, decimal and binary.

How it works

Manufacturers use decimal units (1 GB = 1,000,000,000 bytes) and many operating systems binary ones (1 GiB = 1,073,741,824 bytes). That’s why a 1 TB drive shows up as about 931 GB.

Frequently asked questions

How many MB in a GB?

1,000 MB in decimal units, or 1,024 MiB in binary.

More unit converters calculators

Length — Metres, kilometres, inches, feet, miles and more.
Weight — Kilograms, grams, pounds, ounces, tonnes and stone.
Temperature — Celsius, Fahrenheit and Kelvin.
Volume — Litres, millilitres, cubic metres, gallons, cups and spoons.
Area — Square metres, hectares, acres, square feet and more.
Speed — km/h, m/s, miles per hour and knots.
Time — Seconds, minutes, hours, days, weeks, months and years.
Pressure — Bar, pascals, atmospheres, PSI and mmHg.
Energy — Joules, calories, kilocalories, kWh and BTU.
Fuel economy — L/100 km, km/L and miles per gallon (US and UK).
Binary, decimal and hex — Convert between binary, octal, decimal and hexadecimal.