Area Converter

Convert between square metres, square feet, acres, hectares, square miles, square kilometres, and more — for land, flooring, and property work.

Area

m², ft², acres, hectares

From

Result

0.000001

1 m² = 0.000001 km²

Popular conversions

What Is an Area Converter?

An area converter translates a two-dimensional measurement of surface — square metres to square feet, acres to hectares, square miles to square kilometres — from one unit to another. Area is length squared, which is the single most important thing to remember about it: because both dimensions scale, the conversion factor is the square of the length factor. That is why a square yard is 9 square feet, not 3.

This converter works from the square metre, the SI unit of area. Land and property are where area conversions matter most — real estate listings, farm acreage, flooring quotes, and zoning all mix acres, hectares, and square feet freely depending on country and context. Enter a value in any unit and read it across every supported area unit at once.

This is one category of the full Unit Converter — pair it with our percentage calculator or scientific calculator for related everyday maths.

How Area Conversion Works

Area factors are length factors squared

If 1 ft = 0.3048 m, then 1 ft² = 0.3048² = 0.092903 m². Always square the length ratio — forgetting to is the number-one area conversion error.

Everything routes through the square metre

The converter turns your input into square metres using its squared factor, then projects that into every other area unit, keeping all outputs consistent.

Acres and hectares are land units

An acre is 4,046.86 m² (historically the area a yoke of oxen could plough in a day); a hectare is exactly 10,000 m². One hectare is about 2.471 acres.

Doubling a side quadruples the area

Because area is squared, a room twice as long and twice as wide has four times the floor space — a key intuition for flooring and paint estimates.

Core Area Conversion Factors

Each factor is the square of the matching length factor. Multiply to reach square metres; divide to come back.

ft² → m²

× 0.092903

One square foot is 0.3048² = 0.092903 m². The basis of flooring and floor-plan conversions.

Acres → hectares

× 0.404686

One acre is 0.404686 hectares; one hectare is about 2.471 acres. The core land-area bridge.

mi² → km²

× 2.589988

One square mile is 2.589988 km². Used for regional and map-scale area conversions.

How to Use the Area Converter

1
Enter the area value
Type the area you want to convert — a room's floor space, a plot of land, a country's size.
2
Choose the 'from' unit
Pick square metres, square feet, acres, hectares, square miles, or another supported area unit.
3
Choose the 'to' unit
Select the unit you want the result in, or swap the two with one tap.
4
Compare across units
The all-units table shows the area in every unit at once — handy when a listing quotes acres but you think in square feet.

Key Area Concepts

Square metre

The SI unit of area: the area of a square one metre on each side. Every other area unit is defined as a multiple of it.

Acre

A traditional land unit equal to 4,046.86 m² or 43,560 ft². Originally the area a team of oxen could plough in one day; still standard for US and UK land.

Hectare

A metric land unit equal to exactly 10,000 m² (a square 100 m on a side). The standard for agricultural land in most of the world.

The squaring rule

Area conversion factors are length factors squared. A 10% error in a length ratio becomes a ~21% error in area, so the squaring step matters.

Real-World Area Conversions

🏠

Home floor space

A 2,000 ft² US house is about 186 m²; a 90 m² European flat is 969 ft². Property listings flip between the two depending on the country.

🌾

Farmland

A 40-acre field is 16.19 hectares; a 1-hectare plot is 2.47 acres. Farmers and agronomists convert between acres and hectares constantly.

🎨

Paint coverage

A litre of paint covers about 11 m² (118 ft²). Estimating wall area in the right unit avoids buying too much or too little.

🏟️

Land comparisons

A football pitch is roughly 0.7 hectares; Central Park is 3.41 km² or 843 acres. Area units make 'how big is it really' comparisons concrete.

🧱

Tiling and flooring

A 12 ft × 15 ft room is 180 ft² or 16.7 m². Tile is sold per square metre in much of the world and per square foot in the US.

🗺️

Regional size

A 50 mi² county is about 129.5 km². Maps and census data mix square miles and square kilometres by region.

Best Practices for Area Conversion

✓Always square the length factor. 1 ft² is 0.0929 m², not 0.3048 m². Converting area with the unsquared length ratio is the single most common area mistake.
✓Add a waste margin for materials. After converting floor area, add 5–10% for cuts and breakage when ordering tile, flooring, or paint — the converted number is the bare minimum.
✓Confirm acre vs hectare on listings. A hectare is ~2.47 acres, so a plot quoted in the wrong unit looks more than twice its real size. Always check which the listing uses.
✓Measure length precisely first. Because errors square, a small slip in measuring a side becomes a larger error in area. Get the linear measurements right before converting.
✓Keep units consistent before multiplying. Compute area in one unit system (e.g. multiply metres by metres), then convert the result — don't multiply feet by metres.

Common Area Conversion Mistakes

Forgetting to square the ratio

Using 0.3048 instead of 0.0929 to convert ft² to m² inflates the answer by more than 3×. Area factors must be squared.

Confusing acres and hectares

They differ by ~2.47×. Reading a hectare figure as acres (or vice versa) badly misjudges a plot's true size.

Mixing unit systems mid-calculation

Multiplying a length in feet by a width in metres yields a meaningless area. Convert to one system first, then compute.

Ignoring material waste

Ordering exactly the converted floor area leaves nothing for cuts and breakage. Real jobs need a margin on top.

Why Area Conversion Matters

Area drives money: it sets the price of land, the quantity of flooring, paint, turf, or fertiliser you buy, and the rent per square metre or per square foot of commercial space. Because area is length squared, a careless conversion doesn't just shift the answer a little — it can multiply or divide it several-fold, turning a correct material order into a costly over- or under-purchase.

Land and property are global markets where metric and imperial collide constantly. A buyer reading hectares as acres, or a contractor quoting square feet against a square-metre plan, can misjudge value or materials by a wide margin. An area converter that handles the squaring automatically keeps those high-stakes comparisons honest.

Built for real-estate buyers, farmers, builders, flooring and paint estimators, and anyone comparing land or floor area across units.

Linear unit factors follow the BIPM SI brochure, the NIST Guide to the SI, and ISO 80000. Currency rates load live from open.er-api.com; crypto prices from CoinGecko. See our methodology and editorial policy. Educational only — not certified for regulated trading, settlement, medical, or aerospace use.

Area Converter FAQs

Multiply square feet by 0.092903 to get square metres, because one foot is 0.3048 m and 0.3048² = 0.092903. So 1,000 ft² = 92.9 m². To reverse it, multiply square metres by 10.7639. Note that the factor is the square of the length factor, not the length factor itself.

Exactly 43,560 square feet. An acre is also 4,046.86 square metres or about 0.4047 hectares. The figure comes from the historical definition of an acre as 1 furlong (660 ft) by 1 chain (66 ft).

A hectare is exactly 10,000 m² (a square 100 m per side), while an acre is 4,046.86 m². One hectare equals about 2.471 acres, so a plot measured in hectares covers nearly two and a half times the area of the same number of acres.

Because area is a product of two lengths, both of which scale when you change units. If 1 ft = 0.3048 m, then 1 ft² = 0.3048 × 0.3048 = 0.092903 m². Using the unsquared length factor is the most common area-conversion error.

Multiply hectares by 2.471 to get acres. So a 5-hectare farm is about 12.36 acres. To go the other way, multiply acres by 0.4047 to get hectares.

The factors are derived from exact length definitions and standard land-unit values (acre = 4,046.8564224 m², hectare = 10,000 m²), so the result is exact to your input precision. The tool routes everything through square metres for consistency across all units.