Unit Converter
Convert length, mass, temperature, area, volume, speed, time, data, pressure and energy units locally.
1 km = 1000 m
Length · the result is rounded to six decimals for display
What does this tool do?
Converts between units of length, mass, temperature, area, volume, speed, time, digital storage, pressure and energy. Pick the magnitude, type the value, choose the two units, and read the result.
Digital storage: two kinds of megabyte
Both are here, because both are in use and they do not agree:
- kB, MB, GB, TB — powers of 1000. What a drive manufacturer prints on the box.
- KiB, MiB, GiB, TiB — powers of 1024. What an operating system usually reports.
A 500 GB drive shows up as 465 GiB, and neither number is lying.
Temperature is not a factor
Every other magnitude is a single multiplication: a mile is always 1609.344 metres. Temperature is
not, because the three scales do not share a zero — 0 °C is 32 °F and 273.15 K. It is converted with
the real formulas, and the round trip is exact: -40 °C is -40 °F, which is the one place the two
scales meet.
Keep in mind
All the factors are the ones defined by convention (an inch is exactly 2.54 cm, a pound is exactly 0.45359237 kg), so the results are exact up to the rounding shown on screen. The conversion runs in your browser: the values never leave your machine.