Online Calculator

How to use this Calculator: Type your value in a box. Click the "Go" button next to that box All unit conversions in the same category will be calculated. Click "Clear all Numbers" to start another conversion.

SI (Metric)
Square kilometer (km²)
Hectare (ha)
Are (a)
Square meter (m²)
Square decimeter (dm²)
Square centimeter (cm²)
Square millimeter (mm²)

U.S. Area Measure
Square Mile (sq mi)
Acre
Square rod (sq rd)
Square yard (sq yd)
Square foot (sq ft)
Square inch (sq in)

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