Square centimetres to Square millimetres Converter
Convert square centimetres (cm²) to square millimetres (mm²) instantly. Area conversions are everyday maths in Singapore property: HDB flats are listed in square metres while condo listings and PSF prices use square feet.
Result
- Square millimetres
- 100 mm²
How to use the square centimetres to square millimetres converter
- Enter the square centimetres (cm²).
- The results update as you type, or press Calculate.
- Read the square millimetres first, then the supporting figures below it.
Formula
Square millimetres = square centimetres × 100
Worked example
For example, with these inputs:
- Square centimetres (cm²): 1
the calculator returns:
- Square millimetres: 100 mm²
Square centimetres to Square millimetres table
| Square centimetres | Square millimetres |
|---|---|
| 1 cm² | 100 mm² |
| 2 cm² | 200 mm² |
| 5 cm² | 500 mm² |
| 10 cm² | 1,000 mm² |
| 20 cm² | 2,000 mm² |
| 25 cm² | 2,500 mm² |
| 50 cm² | 5,000 mm² |
| 100 cm² | 10,000 mm² |
| 250 cm² | 25,000 mm² |
| 500 cm² | 50,000 mm² |
| 1,000 cm² | 100,000 mm² |
About this conversion
Area conversions are everyday maths in Singapore property: HDB flats are listed in square metres while condo listings and PSF prices use square feet.
Singapore adopted the metric system in the 1970s, replacing imperial units and traditional Chinese measures in most official uses. Metric units are now standard in schools, trade and government, but older units survive in property, markets and imported goods.
Writing the units next to every number while you work is the simplest way to avoid mistakes. If the units do not cancel to leave the one you want, the calculation is set up wrongly.
Frequently asked questions
How many square millimetres are in one square centimetre?
1 cm² = 100 mm².
How do I convert cm² to mm²?
Square millimetres = square centimetres × 100.