Table Of Contents
Square millimeter to square centimeter Conversion
1 square millimeter (mm²) is equal to 0.01 square centimeter (cm²).
1 mm² = 0.01 cm²
or
1 cm² = 100 mm²
Formula
To convert a area from square millimeter (mm²) to square centimeter (cm²), divide the area in square millimeter by 100
a(cm²) = a(mm²) / 100
Examples:
Convert 100 square millimeter to square centimeter:
a(cm²) = 100mm² / 100 = 1 cm²
Conversion table
| Square millimeter (mm²) | Square centimeter (cm²) |
|---|---|
| 1 mm² | 0.01 cm² |
| 2 mm² | 0.02 cm² |
| 3 mm² | 0.03 cm² |
| 5 mm² | 0.05 cm² |
| 10 mm² | 0.1 cm² |
| 20 mm² | 0.2 cm² |
| 25 mm² | 0.25 cm² |
| 50 mm² | 0.5 cm² |
| 100 mm² | 1 cm² |
| 250 mm² | 2.5 cm² |
| 500 mm² | 5 cm² |
| 1000 mm² | 10 cm² |
| Square centimeter (cm²) | Square millimeter (mm²) |
|---|---|
| 1 cm² | 100 mm² |
| 2 cm² | 200 mm² |
| 3 cm² | 300 mm² |
| 5 cm² | 500 mm² |
| 10 cm² | 1000 mm² |
| 20 cm² | 2000 mm² |
| 25 cm² | 2500 mm² |
| 50 cm² | 5000 mm² |
| 100 cm² | 10000 mm² |
| 250 cm² | 25000 mm² |
| 500 cm² | 50000 mm² |
| 1000 cm² | 100000 mm² |
Frequently asked questions
How do I convert square millimeter to square centimeter?
Divide the value in square millimeter by 100 to get the result in square centimeter. For example, 5 mm² ÷ 100 = 0.05 cm².
How many square centimeter are in 1 square millimeter?
1 square millimeter (mm²) is equal to 0.01 square centimeter (cm²).
How do I convert square centimeter back to square millimeter?
Use the inverse operation: multiply the value in square centimeter by 100 to get the result in square millimeter.
How accurate is the square millimeter to square centimeter conversion?
The converter multiplies by the conversion factor 100 and rounds the result to 9 decimal places by default. You can increase or reduce the precision with the digits option on this page.
Sources
Conversion factors are based on internationally recognised standards:
- BIPM — The International System of Units (SI Brochure, 9th edition)
- NIST Handbook 44, Appendix C — General Tables of Units of Measurement (current edition)
- U.S. Survey Foot: Revised Unit Conversion Factors
- NIST Guide to the SI (SP 811), Appendix B.9: Factors for units listed by kind of quantity or field of science
