mm2 to cm2
1 mm2 (mm2) equals 0.01 cm2 (cm2). Type a value into either box below for an instant two-way conversion. For other units, use the full unit converter.
Chinese version: 平方毫米转平方厘米
Conversion factor
1 mm2 = 0.01 cm2
Reverse: 1 cm2 = 100 mm2
mm2 to cm2 converter
mm2（mm2）
cm2（cm2）
mm2 to cm2 conversion table
| mm2 | cm2 | Detail |
|---|---|---|
| 1 | 0.01 | 1 mm2 to cm2 |
| 2 | 0.02 | 2 mm2 to cm2 |
| 5 | 0.05 | 5 mm2 to cm2 |
| 10 | 0.1 | 10 mm2 to cm2 |
| 20 | 0.2 | 20 mm2 to cm2 |
| 50 | 0.5 | 50 mm2 to cm2 |
| 100 | 1 | 100 mm2 to cm2 |
| 500 | 5 | 500 mm2 to cm2 |
| 1,000 | 10 | 1,000 mm2 to cm2 |
How to convert
To convert mm2 to cm2, multiply: cm2 = mm2 × 0.01
To convert cm2 to mm2, divide: mm2 = cm2 ÷ 0.01 (equivalently × 100).
Example: 100 mm2 × 0.01 = 1 cm2. The factor is derived from the international definition of each unit; results are shown to 4 significant figures.
Frequently asked questions
100 mm2 = 1 cm2. The formula is: value in mm2 × 0.01 = value in cm2. Use the converter above to convert any value instantly.
1 cm2 = 100 mm2. To convert back, divide the cm2 value by 0.01 (or multiply by 100).
cm2 = mm2 × 0.01; conversely mm2 = cm2 ÷ 0.01. For example, 100 mm2 × 0.01 = 1 cm2. The factor comes from the international definition of the units.
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Disclaimer: conversion factors are derived from international unit definitions and results are for reference only. For trade settlement, engineering or legal documents, follow the contract or official metrology standards.