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100 centimeters to millimeters

100 centimeters = 1,000 millimeters

Rounded to a practical precision: 1,000 mm.

How the calculation works

One centimeter is 10 millimeters, so:

100 cm × 10 = 1000 mm

Reversing it, 1,000 millimeters ÷ 10 returns 100 centimeters.

Nearby values

CentimetersMillimeters
60 cm600 mm
70 cm700 mm
80 cm800 mm
90 cm900 mm
100 cm1,000 mm
110 cm1,100 mm
120 cm1,200 mm
130 cm1,300 mm
140 cm1,400 mm

About these units

Centimeter (cm) — A centimetre is one hundredth of a metre, the everyday metric unit for body measurements and small objects.

Millimeter (mm) — A millimetre is one thousandth of a metre and is the default unit on engineering drawings and rulers.

Frequently asked questions

How many millimeters is 100 centimeters?

100 centimeters is 1,000 millimeters.

How do I convert centimeters to millimeters myself?

Multiply by 10. To go back, divide by 10 — or multiply by 0.1.

Is this figure exact?

The conversion factor between the centimeter and the millimeter is fixed by definition. The figure above is rounded for readability; the converter carries full precision.

Convert other values

Full centimeters to millimeters converter · All length converters