Area Converter
Convert any area unit to another with this free area converter. It supports 9 units including square meters, square kilometers, square centimeters, square miles, square yards, square feet, and more. Pick a conversion below for a dedicated calculator, formula, and reference table. For example, 1 m² = 0.000001 km².
All area conversions
Square Meter → Square KilometerSquare Meter → Square CentimeterSquare Meter → Square MileSquare Meter → Square YardSquare Meter → Square FootSquare Meter → Square InchSquare Meter → AcreSquare Meter → HectareSquare Kilometer → Square MeterSquare Kilometer → Square CentimeterSquare Kilometer → Square MileSquare Kilometer → Square YardSquare Kilometer → Square FootSquare Kilometer → Square InchSquare Kilometer → AcreSquare Kilometer → HectareSquare Centimeter → Square MeterSquare Centimeter → Square KilometerSquare Centimeter → Square MileSquare Centimeter → Square YardSquare Centimeter → Square FootSquare Centimeter → Square InchSquare Centimeter → AcreSquare Centimeter → HectareSquare Mile → Square MeterSquare Mile → Square KilometerSquare Mile → Square CentimeterSquare Mile → Square YardSquare Mile → Square FootSquare Mile → Square InchSquare Mile → AcreSquare Mile → HectareSquare Yard → Square MeterSquare Yard → Square KilometerSquare Yard → Square CentimeterSquare Yard → Square MileSquare Yard → Square FootSquare Yard → Square InchSquare Yard → AcreSquare Yard → HectareSquare Foot → Square MeterSquare Foot → Square KilometerSquare Foot → Square CentimeterSquare Foot → Square MileSquare Foot → Square YardSquare Foot → Square InchSquare Foot → AcreSquare Foot → HectareSquare Inch → Square MeterSquare Inch → Square KilometerSquare Inch → Square CentimeterSquare Inch → Square MileSquare Inch → Square YardSquare Inch → Square FootSquare Inch → AcreSquare Inch → HectareAcre → Square MeterAcre → Square KilometerAcre → Square CentimeterAcre → Square MileAcre → Square YardAcre → Square FootAcre → Square InchAcre → HectareHectare → Square MeterHectare → Square KilometerHectare → Square CentimeterHectare → Square MileHectare → Square YardHectare → Square FootHectare → Square InchHectare → Acre
About these units
Square Meter (m²)
- Definition
- A square meter (m²) is the SI unit of area — the area of a square one meter on each side.
- History
- It is the derived SI area unit, defined directly from the meter.
- Current use
- Square meters express floor area, land, and material coverage across the metric world.
Square Kilometer (km²)
- Definition
- A square kilometer (km²) is the area of a square one kilometer on each side, equal to 1,000,000 square meters.
- History
- It is a metric multiple of the square meter for large areas.
- Current use
- Square kilometers measure the area of cities, regions, lakes, and countries.
Square Centimeter (cm²)
- Definition
- A square centimeter (cm²) is the area of a square one centimeter on each side, one ten-thousandth of a square meter.
- History
- It comes from the centimeter in the metric system.
- Current use
- Square centimeters measure small surfaces such as labels, screens, and cross-sections.
Square Mile (mi²)
- Definition
- A square mile (mi²) is the area of a square one mile on each side, about 2.59 square kilometers.
- History
- It derives from the statute mile of English origin.
- Current use
- Square miles express land area and population density in the US and UK.
Square Yard (yd²)
- Definition
- A square yard (yd²) is the area of a square one yard on each side, about 0.836 square meters.
- History
- It follows from the yard in the imperial and US customary systems.
- Current use
- Square yards measure carpet, fabric, and landscaping in the US and UK.
Square Foot (ft²)
- Definition
- A square foot (ft²) is the area of a square one foot on each side, about 0.093 square meters.
- History
- It derives from the foot and is deeply embedded in US and UK property practice.
- Current use
- Square feet are the standard unit for real-estate floor area in the US and UK.
Square Inch (in²)
- Definition
- A square inch (in²) is the area of a square one inch on each side, exactly 6.4516 square centimeters.
- History
- It follows from the inch in the imperial system.
- Current use
- Square inches measure small areas such as print, screens, and material samples.
Acre (ac)
- Definition
- An acre (ac) is a unit of land area equal to 43,560 square feet, or about 4,047 square meters.
- History
- Originally the area a yoke of oxen could plough in a day, it was standardised in medieval England.
- Current use
- Acres measure farmland and real-estate plots in the US and UK.
Hectare (ha)
- Definition
- A hectare (ha) is a metric unit of area equal to 10,000 square meters, or about 2.47 acres.
- History
- It was introduced with the metric system as a practical unit for land.
- Current use
- Hectares are the standard unit for farmland and land area in most of the world.
Frequently asked questions
What area units can I convert?
This area converter supports 9 units: square meters, square kilometers, square centimeters, square miles, square yards, square feet, square inches, acres, hectares. Select any pair below to open a dedicated converter with a formula and conversion table.
How accurate is the area converter?
Conversions use exact definitional factors, so results are accurate to the precision you need for science, engineering, and everyday use. Values are rounded only for display.
Is the area converter free?
Yes. Every area conversion is completely free, needs no sign-up, and runs entirely in your browser — your inputs never leave your device.
Free, private, and instant — every conversion runs in your browser.
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