Length Converter
Convert among mm, cm, m, km, in, ft, yd and mi.
How it works
Result = value × (from factor ÷ to factor), factors relative to meters
1 in = 2.54 cm, 1 ft = 0.3048 m, 1 mi = 1609.344 m.
Worked example
Convert 100 cm:
- Inches:
100 ÷ 2.54 ≈ 39.37 in - Feet:
100 ÷ 30.48 ≈ 3.281 ft - Meters:
100 ÷ 100 = 1 m
Notes and limitations
Factors are relative to the metre: 1 in = 0.0254 m, 1 ft = 0.3048 m, 1 mi = 1,609.344 m. Chained conversions accumulate rounding error, so convert in one step. Note 1 ft = 12 in, not decimal.