Convert 120 cm to mm

How to convert centimeters to millimeters

1. Formula: millimeters = centimeters × 10
2. Put in the value: 120 centimeters.
3. Result: 1,200 millimeters.

Centimeters to millimeters table

Converting the other way: millimeters to centimeters

centimeters = millimeters × 0.1. So 1,200 millimeters is back to 120 centimeters; one millimeter is 0.1 centimeters. See the millimeters to centimeters table.

Quick estimate in your head

For a rough answer, multiply by about 10: 120 × 10 ≈ 1,200 mm, against the exact 1,200 mm (0.0% out). Good enough to check that a calculated result is sensible.

Common mistakes

The usual slip is using the factor the wrong way round. A centimeter is bigger than a millimeter, so the number of millimeters must come out larger than the number of centimeters. If your answer goes the other way, divide instead of multiplying.

About the units

Centimeter (cm) and millimeter (mm) are both units of length. One centimeter equals 10 millimeters, and one millimeter equals 0.1 centimeters. Results on this page are rounded for display; the conversion itself uses the exact definitions.

Length conversions come up in DIY and building plans, running and cycling distances, maps, clothing sizes and travel between countries that use metric and imperial units.

120 centimeters in other units

The most readable unit for this amount is meters (1.2).

• 1,200 mm
• 1.2 m
• 0.0012 km
• 47.244094 in
• 3.937008 ft
• 1.312336 yd
• 0.00074565 mi
• 0.00064795 nmi
• 0.65616798 fm
• 1,200,000 um