Orpheus

Square Feet to Square Metres

Convert floor area properly — not with the linear factor.

Inputs
ft²

The number of square feet to convert.

Square metres
92.9m²
Common mistake (÷ 3.28, over 3× too large)
304.80m²
100 ft²
9.29m²
500 ft²
46.45m²
1,000 ft²
92.9m²
2,000 ft²
185.81m²
square metres = square feet × 0.09290304

1 ft² = 0.092903 m²

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Multiply square feet by 0.0929, or divide by 10.7639. Area scales with the square of the linear factor, so dividing by 3.28 instead overstates the answer by more than three times.

How to use Square Feet to Square Meters

  1. Enter the value. Decimals are fine.
  2. Read the conversion. A short reference table is shown for the values that come up most.

About converting square feet to square metres

This is the conversion that costs real money, and it does so because the mistake looks reasonable. A foot is 0.3048 metres, so people divide by 3.28 and get an answer that is three and a quarter times too large. Area is two-dimensional and both dimensions shrink, so the correct factor is the linear one squared: 10.7639 square feet to the square metre. The error shows up constantly in international property listings, flooring and paint quotes, and agricultural figures. A useful habit that avoids the whole issue: if you have the individual measurements, convert those to metres first and multiply afterwards. Ten feet by twelve becomes 3.048 by 3.658 metres, which multiplies to 11.15 square metres, and no squared factor is ever needed. It also generalises — the same approach handles volume without needing to remember 35.31. Where only the area is known, the factor has to be used, and the sanity check is magnitude: a square metre is a bit under eleven square feet, so the metric number should always be roughly a tenth of the imperial one. If it is a third, the linear factor was used.

Frequently asked questions

Why can I not just divide by 3.28?
Because area has two dimensions and both shrink. The linear factor is 3.28 feet per metre, so the area factor is 3.28 squared, which is 10.76. Dividing by the linear factor overstates the result by a factor of 3.28 — the most expensive conversion error in property listings.
How many square metres is a 1,000 square foot apartment?
92.9 square metres. If you had divided by 3.28 you would get 305, which would be a very large house rather than an apartment. The gap is large enough that the error is usually caught, but the smaller version — converting a room for a flooring quote — is not.
Does this work for room measurements?
Yes, and for anything measured in square units. If you have length and width separately it is often easier to convert each to metres first and then multiply, which sidesteps the squared factor entirely.
What about cubic feet?
Volume has three dimensions, so the factor is cubed: 0.0283 cubic metres per cubic foot, or 35.31 the other way. Using the linear factor there is wrong by more than thirty times.

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