Convert millimeters to centimeters
1 mm = 0.1 cm — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
0.1cm
As a fraction: 1/10
More converter tools
Readable results
Ranges, ± tolerances, feet/inches and clock durations work in the value field.
Unit picker
Export this result
1 mm = 0.1 cm
Show this value in all 50 length units
- Gigameters Gm 1e-12
- Megameters Mm 1e-9
- Kilometers km 0.000 001
- Hectometers hm 0.000 01
- Decameters dam 0.0001
- Meters m 0.001
- Decimeters dm 0.01
- Centimeters cm 0.1
- Millimeters mm 1
- Micrometers µm 1000
- Nanometers nm 1 000 000
- Picometers pm 1 000 000 000
- Femtometers fm 1 000 000 000 000
- Inches in 0.039 370 078 740 2
- Feet ft 0.003 280 839 895 01
- Yards yd 0.001 093 613 298 34
- Miles mi 0.000 000 621 371 192 237
- Nautical miles nmi 0.000 000 539 956 803 456
- Thous thou 39.370 078 740 2
- Hands hh 0.009 842 519 685 04
- Links li 0.004 970 969 537 9
- Spans span 0.004 374 453 193 35
- Cubits cubit 0.002 187 226 596 68
- Ells ell 0.000 874 890 638 67
- Fathoms ftm 0.000 546 806 649 169
- Rods rd 0.000 198 838 781 516
- Chains ch 0.000 049 709 695 379
- Furlongs fur 0.000 004 970 969 537 9
- Leagues lea 0.000 000 207 123 730 746
- Barleycorns barleycorn 0.118 110 236 22
- US survey feet ft (US) 0.003 280 833 333 33
- US survey miles mi (US) 0.000 000 621 369 949 495
- Ångströms Å 10 000 000
- Microns µ 1000
- Bohr radiuss a₀ 18 897 261.2591
- Planck lengths ℓₚ 6.18714249917e+31
- Astronomical units au 6.68458712227e-15
- Light-years ly 1.05700083402e-19
- Light-seconds ls 3.33564095198e-12
- Light-minutes lmin 5.55940158664e-14
- Parsecs pc 3.24077928944e-20
- Kiloparsecs kpc 3.24077928944e-23
- Megaparsecs Mpc 3.24077928944e-26
- Solar radiuss R☉ 1.43740117867e-12
- Earth radiuss R🜨 1.56961230576e-10
- Point (DTP)s pt 2.834 645 669 29
- Picas pc 0.236 220 472 441
- Scandinavian miles mil 0.000 000 1
- Versts вер 0.000 000 937 382 827 147
- Lis 里 0.000 002
Every row is Millimeter (mm) converted through the meter, in exact rational arithmetic.
How to convert millimeters to centimeters
Multiply the number of millimeters by 0.1 to get centimeters.
The exact factor is 0.1 — as a fraction, 1/10.
Millimeter to Centimeter conversion table
| Millimeters (mm) | Centimeters (cm) |
|---|---|
| 1 mm | 0.1 |
| 2 mm | 0.2 |
| 3 mm | 0.3 |
| 5 mm | 0.5 |
| 10 mm | 1 |
| 20 mm | 2 |
| 25 mm | 2.5 |
| 50 mm | 5 |
| 100 mm | 10 |
| 250 mm | 25 |
| 500 mm | 50 |
| 1000 mm | 100 |
Centimeter to Millimeter conversion table
| Centimeters (cm) | Millimeters (mm) |
|---|---|
| 1 cm | 10 |
| 2 cm | 20 |
| 3 cm | 30 |
| 5 cm | 50 |
| 10 cm | 100 |
| 20 cm | 200 |
| 25 cm | 250 |
| 50 cm | 500 |
| 100 cm | 1000 |
| 250 cm | 2500 |
| 500 cm | 5000 |
| 1000 cm | 10 000 |
Frequently asked
How many centimeters are in a millimeter?
One millimeter equals 0.1 centimeters (mm → cm). That figure is exact, not rounded.
How do you convert millimeters to centimeters?
Multiply the number of millimeters by 0.1 to get centimeters.
What is 1 cm in millimeters?
One centimeter is 10 millimeters.
What is 10 mm in cm?
10 mm = 1 cm.