1 square millimeter to square centimeters
1 mm² = 0.01 cm². Change the amount below, or read the formula and the reference table further down.
1 square millimeter equals
square centimeters
1 mm² = 0.01 cm²
The formula
Square millimeters and square centimeters both measure area from the same zero, so a single multiplier does the job.
cm² = mm² × 0.01
Going the other way? Convert square centimeters to square millimeters.
Square millimeters to square centimeters table
Values either side of 1 mm².
| Square millimeters (mm²) | Square centimeters (cm²) |
|---|---|
| -4 | -0.04 |
| -3.5 | -0.035 |
| -3 | -0.03 |
| -2.5 | -0.025 |
| -2 | -0.02 |
| -1.5 | -0.015 |
| -1 | -0.01 |
| -0.5 | -0.005 |
| 0 | 0 |
| 0.5 | 0.005 |
| 1 | 0.01 |
| 1.5 | 0.015 |
| 2 | 0.02 |
| 2.5 | 0.025 |
| 3 | 0.03 |
| 3.5 | 0.035 |
| 4 | 0.04 |
| 4.5 | 0.045 |
| 5 | 0.05 |
| 5.5 | 0.055 |
| 6 | 0.06 |
Questions people ask
- How many square centimeters are in a square millimeter?
- One square millimeter equals 0.01 square centimeters.
- How do I convert square millimeters to square centimeters by hand?
- Multiply the number of square millimeters by 0.01. For a rough check, 0.01 is close enough for most everyday use.
- What is 1 square millimeter in square centimeters?
- 1 square millimeter is 0.01 square centimeters.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.