Area is measured in units such as m², a, ha, km², in², ft², yd², ac. Pick a source and target unit above, enter a value, and the result appears instantly — free and entirely in your browser. Below you'll find the most common individual conversions as dedicated pages.
Which area units are there?
- Square meter (m²) — The square metre (m²) is the SI unit of area: the area of a square with one-metre sides. It is the standard measure for flats, rooms and building plots in metric countries.
- Are (a) — The are (a) equals exactly 100 m² — a square of 10 × 10 metres. One hundred ares make one hectare. In German-speaking countries, garden and allotment plots are traditionally given in ares.
- Hectare (ha) — The hectare (ha) is exactly 10,000 m² — a square of 100 × 100 metres. It is the standard unit for farmland, forests and large plots, and equals about 2.47 acres.
- Square kilometer (km²) — The square kilometre (km²) equals one million square metres or 100 hectares. It measures cities, lakes and countries — Germany, for example, covers about 357,600 km².
- Square inch (in²) — The square inch (in²) is the area of a square with one-inch sides, exactly 6.4516 cm². It is used in the US and UK for small areas such as displays, pipes and material cross-sections.
- Square foot (ft²) — The square foot (ft²) is the imperial area unit for homes and offices in the US and UK, equal to exactly 0.09290304 m². A 1,000 ft² apartment is about 93 m².
- Square yard (yd²) — The square yard (yd²) equals 9 square feet or about 0.836 m². It is used for carpets, fabric and construction work in the US and UK.
- Acre (ac) — The acre is the imperial unit for land, defined as exactly 4,046.8564224 m² — about 0.405 hectares. US and UK real estate and farmland are commonly quoted in acres.
Key facts about area
Metric countries measure land in square metres and hectares, while the US and UK use square feet and acres. Flats, plots and farmland constantly mix these units, so converting area is routine in real estate, gardening and agriculture.
One hectare is defined as exactly 10,000 m² (BIPM SI brochure), and one international acre is exactly 4,046.8564224 m² — so 1 ha equals about 2.4711 acres. A standard football pitch covers roughly 0.7 ha.
How to use the area converter
- Pick the source unit and enter the area value.
- Pick the target unit — the result appears instantly.
- Use the swap button to reverse the direction.
Everything runs locally in your browser — no uploads, no waiting, no limits, and it even works offline.