Area Converter

Convert area units in seconds, from square metres and hectares to acres, square feet, yards, and miles. Clean results you can copy for estimates.

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SIMILAR TOOLS

Last updated: April 15, 2026

Created by: Eon Tools Dev Team

Reviewed by: Okan Atalay

What this converter does

Area turns up at every scale, from the square feet of a kitchen floor to the acres of a farm to the square kilometres of a city. This converter moves a measurement across all of them, mixing the metric units (square metres, hectares, square kilometres) with the imperial ones (square feet, acres, square miles).

How to use it

Type your area into the value box.
Set From to the unit you have, and To to the unit you want. It opens on square metres to square feet.
Press Calculate.

The result reads back in plain words, like "1 ac is equal to 0.404686 ha." Use Swap to flip the two units, and Reset to clear.

How it works

Every unit is referred to the square metre. The tool converts your value to square metres, then back out to the unit you want, using standard factors.

One thing worth knowing: area is length squared, so each area factor is the square of the matching length factor. A foot is 0.3048 metres, so a square foot is 0.3048 times 0.3048, which is 0.09290304 square metres. That is also why doubling the side of a square does not double its area, it quadruples it.

Common area conversions

The ones that come up most:

Conversion	Value
1 acre	4,046.86 m² (43,560 sq ft)
1 hectare	10,000 m² (about 2.47 acres)
1 acre	about 0.405 hectare
1 square mile	2.59 km² (640 acres)
1 square metre	about 10.76 sq ft
1 square foot	0.0929 m² (144 sq inches)

Acres, hectares, and measuring land

When the area gets big, the world splits into two camps. Much of it measures land in hectares, a clean metric unit of 10,000 square metres, which is a square 100 metres on each side. The United States, the UK, and a few others still use the acre, an older unit of about 4,047 square metres, or 43,560 square feet.

The handy bridge between them: a hectare is about two and a half acres, and an acre is a bit smaller than an American football field. Step up again and a square mile is 640 acres, or about 2.59 square kilometres. So if a property is listed in acres and you think in hectares, or the other way around, this is the conversion you need.

Questions people ask

How big is an acre?

An acre is 4,046.86 square metres, or 43,560 square feet, which is roughly a bit smaller than an American football field. In metric terms it is about 0.405 hectares.

How many acres are in a hectare?

About 2.47 acres. A hectare is the larger unit, equal to 10,000 square metres.

What is the difference between an acre and a hectare?

An acre is an imperial unit of about 4,047 square metres, while a hectare is a metric unit of exactly 10,000 square metres. A hectare is roughly two and a half acres.

How many square feet are in a square metre?

About 10.76 square feet. So a 50-square-metre flat is roughly 538 square feet.

Why is a square foot so much smaller than a foot suggests?

Because area is length multiplied by length. A square foot is one foot by one foot, which is 0.0929 square metres, the square of the 0.3048-metre foot. The same squaring applies to every area unit.

References

National Institute of Standards and Technology (NIST), Office of Weights and Measures. The International System of Units (SI) and unit definitions. https://www.nist.gov/pml/owm/metric-si/si-units

Okan Atalay is a results driven senior operations manager and a graduate of Industrial Engineering from Bilkent University. With over 22 years of experience in textile manufacturing and integrated operations, he has led large scale business process improvements and strategic planning initiatives. Currently, he serves as a top mathematics expert for a global ed tech platform, where he applies his analytical expertise to solve complex mathematical problems. At Eon Tools, he reviews converter and maths tools.