Area unit conversion

Square Feet to Square Meters Calculator

Convert an area in square feet to square meters using the exact international-foot definition.

Area input

Enter area in square feet

ft² → m²

Area in square feet (ft²)

Converted area

Square-meter equivalent

The converted area will appear here

Enter a nonnegative area in square feet.

What is ft² to m²?

This converter changes an area measured in square feet into square metres. It is handy when comparing a U.S. property listing with a metric floor plan, checking material coverage, or giving a room area to a supplier who works in SI units. The conversion preserves area; it does not estimate a room from its side lengths.

Area units are squared length units. Because one international foot is exactly 0.3048 metre, one square foot is 0.3048 × 0.3048, or exactly 0.09290304 square metre. Using 0.3048 only once is a common mistake and produces a length conversion rather than an area conversion.

How to Use This Calculator

Enter the area in square feet. Decimals are accepted for measurements that are not whole square feet.
Select Calculate.
Read the square-metre result marked m². The display rounds to four decimal places.
Keep the original measurement and its precision when using the converted figure in plans or purchasing.

The input must be zero or greater. This page performs a unit conversion only. It does not allow for wall thickness, unusable corners, openings, waste, legal measurement rules or differences between gross and net floor area.

Formula Used

Square metres = square feet × 0.09290304

The factor follows from the exact international-foot definition: 1 ft = 0.3048 m, so 1 ft² = (0.3048 m)² = 0.09290304 m². For a quick mental estimate, multiply square feet by 0.093. For purchasing or documentation, use the full factor and round once at the end.

Variables Explained

Item	Meaning
Square feet (ft²)	The entered area in squares measuring one foot by one foot.
Square metres (m²)	The equivalent area in squares measuring one metre by one metre.
0.3048	Exact number of metres in one international foot.
0.09290304	Exact number of square metres in one square foot.
Gross area	An area convention that may include walls or other spaces; the converter does not choose a convention.
Net area	Usable or measured area under a stated method, which may differ from gross area.

Worked Example

Convert a 1,250 ft² apartment. Multiply 1,250 by 0.09290304:

1,250 × 0.09290304 = 116.1288 m²

The calculator displays 116.1288 m². If the original listing is rounded to the nearest square foot, it may be more honest to describe the result as about 116.1 m². The decimal conversion cannot make the source measurement more exact.

As a reverse check, 116.1288 divided by 0.09290304 returns 1,250 ft² apart from any rounding.

Why Use This Calculator?

The result occupies the same physical area as the input. Its number is smaller because a square metre is larger than a square foot: one square metre contains about 10.7639 square feet. This does not say how the space is arranged; long narrow rooms and nearly square rooms can share the same area.

For flooring, paint, roofing or landscaping, conversion is only one step. Confirm whether the quoted coverage is nominal, whether repeated pieces must align, and how much cutting waste or spare material the job needs. For property comparisons, check whether balconies, garages, common areas and wall thickness are counted consistently. Measurement conventions can create a bigger difference than the conversion rounding.

For large totals, keep conversion and measurement uncertainty separate. A plan measured to the nearest foot can carry substantial area uncertainty even though the unit factor is exact. If several rooms were measured independently, convert the final summed square-foot area when possible; that avoids accumulating display rounding. If a contract, appraisal or permit defines its own rounding convention, follow that document rather than assuming four decimal places are required. A cadastral or survey measurement may also follow rules beyond ordinary floor-area conversion, so use the responsible record for legal boundaries.

Common Mistakes

Multiplying by 0.3048 instead of squaring that length factor.
Labeling the answer ft² instead of m².
Converting each rounded dimension when a reliable area is already available.
Confusing square feet with linear feet.
Assuming gross and usable floor area mean the same thing.
Adding waste automatically even though this converter does not.
Reporting more precision than the original measurement supports.

Frequently Asked Questions

How many square metres are in one square foot?

Exactly 0.09290304 m² under the international-foot definition.

Why is the square-metre number smaller?

A square metre is a larger unit of area and contains about 10.7639 square feet.

Can I use this for flooring orders?

Yes for converting measured area, but add an appropriate project allowance separately.

Does the result include walls?

It includes whatever the original square-foot figure included; the page cannot determine the measurement convention.

Can I convert a room using only its length?

No. Area needs an area value or at least two dimensions for a rectangle.

Is 0.093 accurate enough?

It is useful for a quick estimate; the calculator uses the exact 0.09290304 factor.

What does ft² mean?

It means square feet, an area made from one-foot-by-one-foot squares.