Unit Converter › Area › mm² → cm²
Area · scale · base square metre
mm² to cm²
1 square millimetre (mm²) = 0.01 cm². Multiply by 0.01. One square millimetre (mm²) is 0.01 cm².
Convert
scale · base square metre
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| Every unit at once | Value | Unit |
|---|
mm² to cm² table
| square millimetre (mm²) | cm² | Unit |
|---|---|---|
| 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 |
| 500 mm² | 5 | cm² |
| 1,000 mm² | 10 | cm² |
the acre is exact
An acre is exactly 4,046.8564224 m², because it is defined from the exact yard. A hectare is exactly 10,000 m² — the two are close but never equal.