Square centimeters (cm²) to Square millimeters (mm²) Conversion
Square centimeters
The square centimetre is a unit of area equal to one ten-thousandth of a square metre (10⁻⁴ m²). It is commonly used in medicine for measuring wound areas, skin lesions, and body surface area calculations. In materials science, properties such as electrical conductivity and thermal resistance are sometimes expressed per square centimetre. Cross-sectional areas of cables and pipes in engineering are often specified in square centimetres.
Square millimeters
The square millimetre is a unit of area equal to one millionth of a square metre (10⁻⁶ m²). In engineering, cross-sectional areas of wires and cables are standardised in square millimetres — electrical cable ratings specify conductor cross-sections in mm² (e.g., 1.5 mm², 2.5 mm², 4 mm²). In materials testing, stress is calculated as force per unit area in megapascals, where the area is expressed in square millimetres.
| Square centimeters (cm²) | Square millimeters (mm²) |
|---|---|
| 0.1 cm² | 10.00 mm² |
| 1 cm² | 100.00 mm² |
| 2 cm² | 200.00 mm² |
| 3 cm² | 300.00 mm² |
| 5 cm² | 500.00 mm² |
| 10 cm² | 1,000.00 mm² |
| 20 cm² | 2,000.00 mm² |
| 30 cm² | 3,000.00 mm² |
| 50 cm² | 5,000.00 mm² |
| 100 cm² | 10,000.00 mm² |
| 1000 cm² | 100,000.00 mm² |
Frequently Asked Questions (FAQ)
How many square millimeters are in 1 square centimeters?
1 square centimeters (cm²) is exactly 100.000 square millimeters (mm²).
How do I convert square centimeters to square millimeters?
Multiply the value in square centimeters by 100.000 to get the result in square millimeters. Or use the converter above — type any number and see the result instantly.