Square Meters to Square Feet Converter

A meter is about 3.2808 feet. A square meter is a square with 1 m sides, so it holds 3.2808 × 3.2808 square feet, which the tool gives as 10.7639 ft². Using the plain length factor would leave you with a figure about three times too small: 20 m² × 3.2808 is 65.6 ft², when the room is really 215.28 ft².

A quick sanity check: each side of a square meter is a bit over 3 ft, and 3 × 3 is already 9. Any answer near 3 ft² per m² has skipped the squaring.

Flooring and tiles are often priced and boxed in square feet, while metric room plans are in square meters. Work through it in this order:

1. Convert the room area. A 4 × 5 m room is 20 m², or 215.28 ft².
2. Add a waste allowance if you use one. With 10% extra, 215.28 becomes 236.81 ft².
3. Divide by the coverage per box. At 22 ft² a box, that is 10.76 boxes.
4. Round up. Buy 11 boxes, because a box short means a second trip and possibly a different batch.

When a paint label quotes coverage in square feet per gallon and your walls are measured in square meters, the simplest route is to convert the walls. 40 m² of wall is 430.56 ft². At a label figure of 350 ft² per gallon, one coat needs 1.2302 gallons.

If you would rather keep everything metric, convert the label once: 350 ft² per gallon is 8.5898 m² per liter. Then 40 m² ÷ 8.5898 = 4.6567 liters per coat, the same amount of paint.

• × 10 is easy but 7.10% low. A 50 m² flat becomes 500 ft² instead of 538.2.
• × 11 is 2.19% high, which is the safer side to err on when you are buying material.
• × 10.75 is only 0.13% low if you can manage the arithmetic.

Results of 100 ft² and up are shown to 2 decimals. No tape measure is that precise, so round to the nearest whole square foot.