Table Of Contents
Square centimeter to square millimeter Conversion
1 square centimeter (cm²) is equal to 100 square millimeter (mm²).
1 cm² = 100 mm²
or
1 mm² = 0.01 cm²
Formula
To convert a area from square centimeter (cm²) to square millimeter (mm²), multiply the area in square centimeter by 100
a(mm²) = a(cm²) × 100
Examples:
Convert 50 square centimeter to square millimeter:
a(mm²) = 50cm² × 100 = 5000 mm²
Conversion table
| 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 |
| 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 |
Frequently asked questions
How do I convert square centimeter to square millimeter?
Multiply the value in square centimeter by 100 to get the result in square millimeter. For example, 5 cm² × 100 = 500 mm².
How many square millimeter are in 1 square centimeter?
1 square centimeter (cm²) is equal to 100 square millimeter (mm²).
How do I convert square millimeter back to square centimeter?
Use the inverse operation: divide the value in square millimeter by 100 to get the result in square centimeter.
How accurate is the square centimeter to square millimeter 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
