cm2 to mm2
1 cm2 (cm2) equals 100 mm2 (mm2). Type a value into either box below for an instant two-way conversion. For other units, use the full unit converter.
Chinese version: 平方厘米转平方毫米
Conversion factor
1 cm2 = 100 mm2
Reverse: 1 mm2 = 0.01 cm2
cm2 to mm2 converter
cm2（cm2）
mm2（mm2）
cm2 to mm2 conversion table
| cm2 | mm2 | Detail |
|---|---|---|
| 1 | 100 | 1 cm2 to mm2 |
| 2 | 200 | 2 cm2 to mm2 |
| 5 | 500 | 5 cm2 to mm2 |
| 10 | 1,000 | 10 cm2 to mm2 |
| 20 | 2,000 | 20 cm2 to mm2 |
| 50 | 5,000 | 50 cm2 to mm2 |
| 100 | 10,000 | 100 cm2 to mm2 |
How to convert
To convert cm2 to mm2, multiply: mm2 = cm2 × 100
To convert mm2 to cm2, divide: cm2 = mm2 ÷ 100 (equivalently × 0.01).
Example: 1 cm2 × 100 = 100 mm2. The factor is derived from the international definition of each unit; results are shown to 4 significant figures.
Frequently asked questions
1 cm2 = 100 mm2. The formula is: value in cm2 × 100 = value in mm2. Use the converter above to convert any value instantly.
1 mm2 = 0.01 cm2. To convert back, divide the mm2 value by 100 (or multiply by 0.01).
mm2 = cm2 × 100; conversely cm2 = mm2 ÷ 100. For example, 1 cm2 × 100 = 100 mm2. The factor comes from the international definition of the units.
More conversions
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.