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Length formulas
Conversion
Factor
Example
km → m
× 1,000
1 km = 1,000 m
m → cm
× 100
1 m = 100 cm
inch → cm
× 2.54
12 in = 30.48 cm
ft → m
× 0.3048
1 ft = 0.3048 m
Examples
Road distance: 5 km = 5,000 metres.
Table height: 3 feet = 91.44 centimetres.
More: remembering the units
Metric steps go by 10/100/1,000: mm → cm (÷10) → m (÷100) → km (÷1,000). For imperial, remember 12 inches = 1 foot. The bridge between the systems: 1 inch = 2.54 cm.
Frequently asked questions
How many centimetres is an inch?
Exactly 2.54 cm. So 12 inches = 30.48 cm = 1 foot.
How many feet is a metre?
1 metre = 3.28084 feet. And 1 foot = 30.48 centimetres.
How many metres is a kilometre?
1,000 metres. And 1 metre = 100 centimetres = 1,000 millimetres.
Are land units (shotok, katha) included?
No — for Bangladeshi land units see the land measurement converter. This page covers international length units.
Can I enter fractions?
Yes, decimals work. Results show up to 4 decimal places.