Length Converter - DigiKitApp

Convert between length units like meters, kilometers, feet, miles.

When should you use this?

Use this when you need a quick conversion between length units, meters, feet, inches.

When shouldn't you use this?

If you're doing precise engineering calculations, check the rounding precision of the result; this tool is built for everyday use, sub-millimeter precision work may need a specialized tool.

Step-by-step

  1. Enter the number you want to convert in the Value field. For decimals, double-check which separator you typed.
  2. Pick the unit you are starting from in From unit: m, km, cm, mm, ft, yd or mi.
  3. Pick the unit you want in To unit.
  4. Click Run and read the result. To see the same value in another unit, change only To unit and run it again.

Example

A European furniture listing says a sofa is 210 cm wide and you want to know if it fits a wall you measured in feet. Enter 210, set From unit to cm and To unit to ft, and you get just under 6.9 ft. Going the other way, a 5 ft gap is exactly 152.4 cm, because one foot is defined as 0.3048 m. The same exactness applies to the mile: 1 mi is 1.609344 km, so a 10 km race is a little over 6.2 miles.

How length units relate

The tool converts between metres, kilometres, centimetres, millimetres, feet (ft), yards (yd) and miles (mi). The basic equalities are 1 ft = 0.3048 m, 1 yd = 0.9144 m (3 ft) and 1 mi = 1609.344 m. In the metric system units are powers of ten, while feet, yards and miles are traditional units used in the US and UK.

Practical examples and tips

  • 100 yards is 91.44 m; 1 mile is about 1.609 km.
  • 6 feet is about 182.9 cm; useful when converting height.
  • The nautical mile (1.852 km) and the inch are not in this tool; do not confuse them.
  • In precise engineering work, check the effect of rounding.

Things to keep in mind

  • The mi option is the statute mile. The nautical mile used at sea and in aviation is a different unit and isn't in this list.
  • Inches aren't offered here. One inch is exactly 2.54 cm, so you can apply that factor by hand for screen sizes or wheel diameters.
  • Converting back and forth several times and reusing the rounded output can let small errors pile up. Start each conversion from the original measurement.
  • Mixed values such as 5 ft 9 in need two steps: convert the feet, convert the inches by hand, then add them.

Frequently asked questions

Is my data stored?

No, none of the data you enter is sent to a server or stored.

Is this tool free?

Yes, completely free and no account required.

How long does it take to get a result?

Most operations complete instantly; larger files may take a few seconds.