Stax

Unit Converter

Convert length, weight, temperature, area, volume, speed, and data units.

Millimetre (mm)1
Centimetre (cm)0.1
Metre (m)0.001
Kilometre (km)1.0000e-6
Inch (in)0.0393701
Foot (ft)0.00328084
Yard (yd)0.00109361
Mile (mi)6.2137e-7
Nautical mile5.3996e-7

Unit conversion categories

  • Length — mm, cm, m, km, inch, foot, yard, mile, nautical mile
  • Weight — mg, g, kg, tonne, ounce, pound, stone
  • Temperature — Celsius, Fahrenheit, Kelvin
  • Area — mm², cm², m², km², in², ft², acre, hectare
  • Volume — mL, L, m³, fl oz, cup, pint, quart, gallon
  • Speed — m/s, km/h, mph, knot, Mach
  • Data — bit, byte, KB, MB, GB, TB

Quick reference conversions

  • 1 inch = 2.54 cm
  • 1 kg = 2.205 lbs
  • 1 mile = 1.609 km
  • 1 litre = 0.264 US gallons
  • 100°C = 212°F = 373.15 K
  • 1 GB = 1,024 MB = 8,589,934,592 bits

Frequently asked questions

How do I convert Celsius to Fahrenheit?
Select the Temperature category, choose Celsius as the input unit, and enter your value. The converter shows the equivalent in Fahrenheit and Kelvin instantly. Formula: °F = (°C × 9/5) + 32.
How many kg in a pound?
1 pound = 0.453592 kg. Conversely, 1 kg = 2.20462 pounds. Select the Weight category to convert between all weight units at once.
How do I convert km to miles?
1 kilometre = 0.621371 miles. 1 mile = 1.60934 km. Select the Length category, choose Kilometre as input, and the converter shows miles and all other length units.
What data units are supported?
The Data category supports bits, bytes, kilobytes (KB), megabytes (MB), gigabytes (GB), and terabytes (TB). All conversions use binary definitions (1 KB = 1024 bytes).
Why does my conversion show scientific notation?
Very large or very small values are displayed in scientific notation (e.g., 1.23e+9) to keep the display clean. This happens when converting between units with very large conversion factors, like bits to terabytes.

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