How many area units can this converter handle?

Nine: square millimetres, square centimetres, square metres, square kilometres, hectares, acres, square feet, square yards and square miles. The result panel also prints the ratio in the form "1 unit = x unit", so you can reuse the multiplier in a calculation of your own.

Why is 1 m² not the same number as 1 metre in feet?

Because area factors are length factors squared. 1 metre is 3.2808 ft, but 1 m² is 3.2808 × 3.2808 = 10.7639 ft². A square metre is one metre by one metre, so both dimensions convert and the multiplier gets applied twice. This is the single most common reason area conversions feel unintuitive.

How many acres are in a hectare?

One hectare is 2.471 acres, which makes an acre about 40.5% of a hectare. So a "five-acre" plot is just over two hectares, not five — the error is large enough to matter when reading property listings. A hectare is exactly 10,000 m² (100 m on a side); an acre is 4046.86 m².

Area Converter

Free online area converter. Convert m², km², ft², acres, hectares. Fast, accurate, runs in your browser.

From

Result

ft²

1 m2 = 10.7639150512 ft2

Common Conversions

1 m²=10.764 ft²

1 hectare=10,000 m²

1 acre=4,046.86 m²

1 km²=247.105 acres

1 ft²=0.093 m²

1 mi²=2.59 km²

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Frequently Asked Questions about Area Converter

Area Converter — Metric and Imperial Area Units

This area converter handles nine units of area: square millimetres, square centimetres, square metres, square kilometres, hectares, acres, square feet, square yards and square miles. Type in either field and the other updates as you go.

Understanding it starts with one idea: area factors are length factors squared. A square metre is one metre by one metre, so converting area means multiplying the linear conversion by itself. That is why the numbers feel less familiar than the length equivalents — 1 m is 3.28 ft, but 1 m² is 10.76 ft², not 10.76× the same-looking number. It is 3.28 squared.

The Nine Units in Square Metres

Unit	In m²	Note
mm²	0.000001	Smallest unit here; typical for electronics and materials.
cm²	0.0001	Common for document and label sizes.
m²	1	The base unit for area.
km²	1,000,000	One million m². Geographic scale.
ha	10,000	Hectare. Exactly 10,000 m², and 100 m on a side.
ac	4,046.86	Acre. About 40% of a hectare.
ft²	0.092903	Square foot. The most common US real-estate unit.
yd²	0.836127	Square yard. Exactly 9 ft².
mi²	2,589,988.11	Square mile. A land section of 1 mile on each side.

Hectares Versus Acres

These are the two units you will meet when reading about land, and they are not close to equal. One hectare is 2.47 acres, so an acre is about 40.5% of a hectare — or, put the other way, you need roughly 2.5 hectares for every 6 acres. Getting this backwards is a classic error in property listings, and it is a big enough difference to matter: a "five-acre" plot is just over two hectares, not five.

Area	Hectares	Acres
1 hectare	1	2.471
1 acre	0.4047	1
1 km²	100	247.105
Football pitch (1 ha)	1	2.47

Metric units scale by powers of ten, which is why the metric column above is a column of 1s and 10,000s. The imperial units do not, which is why acres and square miles feel arbitrary by comparison.

Related Converters

Length Converter — the linear equivalent, and worth checking first since area factors derive from it.
Volume Converter — length cubed. Note US and imperial gallons differ, which bites more often here than in area.
Square Footage Calculator — for room and floor areas, including irregular shapes.
Surface Area Calculator — the 3D counterpart for boxes, cylinders and spheres.
Blueprint Dimension Converter — decimal-feet, feet-inches and metres, for reading site dimensions off a scaled drawing.
Material Quantity Calculator — turns an area into the quantity of flooring, paint or fabric to buy.