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  7. Convert mm to cm

Convert mm to cm

Convert Millimeter (mm) to Centimeter (cm) instantly.

Choose how you want the answer displayed.

1mm=0.1cm

Quick ConversionConverted
1 mm0.1 cm
5 mm0.5 cm
10 mm1 cm
25 mm2.5 cm
50 mm5 cm
100 mm10 cm
500 mm50 cm
1,000 mm100 cm

Millimeter

A millimeter is one thousandth of a meter.

Millimeters are used for detailed metric measurements where small increments matter.

Same length, two labels

1 mm = 0.1 cm

mm
00.250.50.751
cm
00.0250.050.0750.1
matchBoth colored scales mark the same physical length, showing the conversion relationship for this pair.

Centimeter

A centimeter (cm), also spelled centimetre, is a metric unit of length in the International System of Units. The centi- prefix means one hundredth.

One centimeter is equal to 1/100 of a meter (m), 10 millimeters (mm), and 1/2.54 of an inch.

How to Convert Millimeter to Centimeter

Mathematically, centimeter (cm) = millimeter (mm) multiplied by the conversion factor shown below.

1 mm = 0.1 cm

1 cm = 10 mm

1 mm x 0.1 = 0.1 cm

The distance in centimeter (cm) is the distance in millimeter (mm) multiplied by 0.1.

distance(cm) = distance(mm) x 0.1

Or:

cm = mm x 0.1

Formula: value × 0.1

Example: 15 mm = 1.5 cm

Example #1

Convert 25 millimeter to centimeter:

25 mm x 0.1 = 2.5 cm

Example #2

Convert 250 millimeter to centimeter:

250 mm x 0.1 = 25 cm

  1. Start with the length in millimeters (mm).
  2. Divide by 10 to convert millimeters into centimeters.
  3. Keep one decimal place when the millimeter value does not divide evenly by 10.

Precision note: The mm to cm conversion is exact. Keep decimal centimeters when the millimeter value does not convert to a whole centimeter.

How many mm in cm and cm in mm

1 mm = 0.1 cm

1 cm = 10 mm

If you are starting with centimeter instead, use the cm to mm page.

Millimeter [mm]Centimeter [cm]
0.1 mm0.01 cm
0.5 mm0.05 cm
2 mm0.2 cm
3 mm0.3 cm
15 mm1.5 cm
20 mm2 cm
30 mm3 cm
75 mm7.5 cm
150 mm15 cm
250 mm25 cm
750 mm75 cm
1,500 mm150 cm

Common Use Cases for mm to cm

  • Converting small object dimensions from mm to cm.
  • Preparing product or craft measurements in a more familiar metric unit.
  • Changing drawing or hardware dimensions into centimeters.
  • Solving school measurement problems that use millimeters and centimeters together.

FAQ

How many centimeters are in one millimeter?

One millimeter is 0.1 centimeters.

How many millimeters are in one centimeter?

One centimeter contains exactly 10 millimeters.

Is 25 mm equal to 2.5 cm?

Yes. 25 millimeters is exactly 2.5 centimeters.

More Millimeter conversions

  • mm to km
  • mm to meters
  • mm to miles
  • mm to yards
  • mm to feet
  • mm to inches
  • mm to nautical mile