Area Unit Converter
Area Unit Conversion Chart
1 m² = 0.00000100000 km²
Square Meter (m²) (m2) to Square Kilometer (km²) (km2)
1 m² = 10,000 cm²
Square Meter (m²) (m2) to Square Centimeter (cm²) (cm2)
1 m² = 1,000,000 mm²
Square Meter (m²) (m2) to Square Millimeter (mm²) (mm2)
1 m² = 10.764 ft²
Square Meter (m²) (m2) to Square Foot (ft²) (ft2)
1 m² = 1,550.003 in²
Square Meter (m²) (m2) to Square Inch (in²) (in2)
1 m² = 0.000247105 acre
Square Meter (m²) (m2) to Acre (acre)
1 m² = 0.000100000 ha
Square Meter (m²) (m2) to Hectare (ha)
1 km² = 1,000,000 m²
Square Kilometer (km²) (km2) to Square Meter (m²) (m2)
1 km² = 10,000,000,000 cm²
Square Kilometer (km²) (km2) to Square Centimeter (cm²) (cm2)
1 km² = 1,000,000,000,000 mm²
Square Kilometer (km²) (km2) to Square Millimeter (mm²) (mm2)
1 km² = 10,763,915.051 ft²
Square Kilometer (km²) (km2) to Square Foot (ft²) (ft2)
1 km² = 1,550,003,100.006 in²
Square Kilometer (km²) (km2) to Square Inch (in²) (in2)
1 km² = 247.105 acre
Square Kilometer (km²) (km2) to Acre (acre)
1 km² = 100 ha
Square Kilometer (km²) (km2) to Hectare (ha)
1 cm² = 0.000100000 m²
Square Centimeter (cm²) (cm2) to Square Meter (m²) (m2)
1 cm² = 1.00000e-10 km²
Square Centimeter (cm²) (cm2) to Square Kilometer (km²) (km2)
1 cm² = 100 mm²
Square Centimeter (cm²) (cm2) to Square Millimeter (mm²) (mm2)
1 cm² = 0.00107639 ft²
Square Centimeter (cm²) (cm2) to Square Foot (ft²) (ft2)
1 cm² = 0.155000 in²
Square Centimeter (cm²) (cm2) to Square Inch (in²) (in2)
1 cm² = 2.47105e-8 acre
Square Centimeter (cm²) (cm2) to Acre (acre)
1 cm² = 1.00000e-8 ha
Square Centimeter (cm²) (cm2) to Hectare (ha)
1 mm² = 0.00000100000 m²
Square Millimeter (mm²) (mm2) to Square Meter (m²) (m2)
1 mm² = 1.00000e-12 km²
Square Millimeter (mm²) (mm2) to Square Kilometer (km²) (km2)
1 mm² = 0.0100000 cm²
Square Millimeter (mm²) (mm2) to Square Centimeter (cm²) (cm2)
1 mm² = 0.0000107639 ft²
Square Millimeter (mm²) (mm2) to Square Foot (ft²) (ft2)
1 mm² = 0.00155000 in²
Square Millimeter (mm²) (mm2) to Square Inch (in²) (in2)
1 mm² = 2.47105e-10 acre
Square Millimeter (mm²) (mm2) to Acre (acre)
1 mm² = 1.00000e-10 ha
Square Millimeter (mm²) (mm2) to Hectare (ha)
1 ft² = 0.0929030 m²
Square Foot (ft²) (ft2) to Square Meter (m²) (m2)
1 ft² = 9.29030e-8 km²
Square Foot (ft²) (ft2) to Square Kilometer (km²) (km2)
1 ft² = 929.03 cm²
Square Foot (ft²) (ft2) to Square Centimeter (cm²) (cm2)
1 ft² = 92,903 mm²
Square Foot (ft²) (ft2) to Square Millimeter (mm²) (mm2)
1 ft² = 144 in²
Square Foot (ft²) (ft2) to Square Inch (in²) (in2)
1 ft² = 0.0000229568 acre
Square Foot (ft²) (ft2) to Acre (acre)
1 ft² = 0.00000929030 ha
Square Foot (ft²) (ft2) to Hectare (ha)
1 in² = 0.000645160 m²
Square Inch (in²) (in2) to Square Meter (m²) (m2)
1 in² = 6.45160e-10 km²
Square Inch (in²) (in2) to Square Kilometer (km²) (km2)
1 in² = 6.452 cm²
Square Inch (in²) (in2) to Square Centimeter (cm²) (cm2)
1 in² = 645.16 mm²
Square Inch (in²) (in2) to Square Millimeter (mm²) (mm2)
1 in² = 0.00694445 ft²
Square Inch (in²) (in2) to Square Foot (ft²) (ft2)
1 in² = 1.59422e-7 acre
Square Inch (in²) (in2) to Acre (acre)
1 in² = 6.45160e-8 ha
Square Inch (in²) (in2) to Hectare (ha)
1 acre = 4,046.86 m²
Acre (acre) to Square Meter (m²) (m2)
1 acre = 0.00404686 km²
Acre (acre) to Square Kilometer (km²) (km2)
1 acre = 40,468,600 cm²
Acre (acre) to Square Centimeter (cm²) (cm2)
1 acre = 4,046,860,000 mm²
Acre (acre) to Square Millimeter (mm²) (mm2)
1 acre = 43,560.057 ft²
Acre (acre) to Square Foot (ft²) (ft2)
1 acre = 6,272,645.545 in²
Acre (acre) to Square Inch (in²) (in2)
1 acre = 0.404686 ha
Acre (acre) to Hectare (ha)
1 ha = 10,000 m²
Hectare (ha) to Square Meter (m²) (m2)
1 ha = 0.0100000 km²
Hectare (ha) to Square Kilometer (km²) (km2)
1 ha = 100,000,000 cm²
Hectare (ha) to Square Centimeter (cm²) (cm2)
1 ha = 10,000,000,000 mm²
Hectare (ha) to Square Millimeter (mm²) (mm2)
1 ha = 107,639.151 ft²
Hectare (ha) to Square Foot (ft²) (ft2)
1 ha = 15,500,031 in²
Hectare (ha) to Square Inch (in²) (in2)
1 ha = 2.471 acre
Hectare (ha) to Acre (acre)
Common area unit conversions: square meter to square centimeter (m² to cm²), square kilometer to square meter (km² to m²), square foot to square meter (ft² to m²), acre to square meter (acre to m²), hectare to square meter (ha to m²), square inch to square centimeter (in² to cm²), square yard to square meter (yd² to m²). Convert area units easily with precise calculations.
Popular Unit Conversions
Direct links to common conversion pages with formulas, tables, and FAQ.
m2 to ft2Square Meter (m²) (m2) to Square Foot (ft²) (ft2)ft2 to m2Square Foot (ft²) (ft2) to Square Meter (m²) (m2)m2 to acreSquare Meter (m²) (m2) to Acre (acre)acre to m2Acre (acre) to Square Meter (m²) (m2)ha to acreHectare (ha) to Acre (acre)acre to haAcre (acre) to Hectare (ha)km2 to mi2Square Kilometer (km²) (km2) to Square Mile (mi²) (mi2)mi2 to km2Square Mile (mi²) (mi2) to Square Kilometer (km²) (km2)cm2 to in2Square Centimeter (cm²) (cm2) to Square Inch (in²) (in2)in2 to cm2Square Inch (in²) (in2) to Square Centimeter (cm²) (cm2)m2 to haSquare Meter (m²) (m2) to Hectare (ha)ha to m2Hectare (ha) to Square Meter (m²) (m2)
Principles & formula sources
Area scales with the square of length. If 1 ft = 0.3048 m, then 1 ft² = (0.3048)² m²—so you can’t reuse linear factors directly.
We convert via m² and apply: target = source × (source→m²) ÷ (target→m²).
Formula & example
Formula: value_target = value_source * (source_to_m2) / (target_to_m2).
Example: 1 m^2 = 10000 cm^2; 1 ha = 10000 m^2.
Common errors & notes
- Typical mistake: forgetting the square (using ft→m for ft²).
- Acre vs hectare: choose the correct unit and symbol.
- Keep extra precision before rounding the final result.
Practical use cases
Area conversions support material estimation, land survey summaries, and microscopy imaging where cm^2, m^2, and in^2 are mixed.
When scaling designs, convert area and length separately to avoid compounding errors.
References / data sources
- BIPM — SI Brochure (m²)
- NIST SP 811 — Guide for the Use of SI
- ISO 80000 — Area conventions