1 square centimeter to square millimeters
1 cm² = 100 mm². Change the amount below, or read the formula and the reference table further down.
1 square centimeter equals
square millimeters
1 cm² = 100 mm²
The formula
Square centimeters and square millimeters both measure area from the same zero, so a single multiplier does the job.
mm² = cm² × 100
Going the other way? Convert square millimeters to square centimeters.
Square centimeters to square millimeters table
Values either side of 1 cm².
| Square centimeters (cm²) | Square millimeters (mm²) |
|---|---|
| -4 | -400 |
| -3.5 | -350 |
| -3 | -300 |
| -2.5 | -250 |
| -2 | -200 |
| -1.5 | -150 |
| -1 | -100 |
| -0.5 | -50 |
| 0 | 0 |
| 0.5 | 50 |
| 1 | 100 |
| 1.5 | 150 |
| 2 | 200 |
| 2.5 | 250 |
| 3 | 300 |
| 3.5 | 350 |
| 4 | 400 |
| 4.5 | 450 |
| 5 | 500 |
| 5.5 | 550 |
| 6 | 600 |
Questions people ask
- How many square millimeters are in a square centimeter?
- One square centimeter equals 100 square millimeters.
- How do I convert square centimeters to square millimeters by hand?
- Multiply the number of square centimeters by 100. For a rough check, 100 is close enough for most everyday use.
- What is 1 square centimeter in square millimeters?
- 1 square centimeter is 100 square millimeters.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.