Sq feet to square meters calculator (ft² to m²)
What is a sq feet to square meters calculator?
A sq feet to square meters calculator turns an area written in square feet into the same area written in square meters. Enter a floor plan of 1500 ft² and it returns 139.35 m² — the identical patch of ground, just described in the metric system instead of the customary one.
Square feet (ft²)
A square foot is the area of a square measuring one foot on every side. It belongs to the imperial and United States customary systems and is the unit most people in the United States, the United Kingdom, Canada, and much of South Asia use when they talk about the size of a house, an apartment, an office, or a single room.
Square meters (m²)
A square meter is the SI unit of area — the area of a square one meter on each side. Because the meter is the base unit of length in the International System of Units, the square meter is the default area unit for construction drawings, property registries, and material specifications nearly everywhere outside the United States.
How does the calculator work?
The calculator holds both fields in sync. Type a value into the square feet box and the square meters box updates instantly; type into the square meters box and the square feet box follows. It tracks which field you edited last and converts outward from that one, so the two numbers never disagree and you can work in whichever direction suits you.
Clearing a field clears the other, so a blank calculator never shows a misleading zero.
Square feet to square meters conversion formula
The conversion follows from a single exact definition: one foot is exactly 0.3048 meters. Squaring both sides gives the area relationship, so one square foot is exactly 0.09290304 square meters.
To convert square feet to square meters, multiply by 0.09290304:
To convert square meters back to square feet, multiply by the reciprocal, approximately 10.76391041671:
Because the foot-to-meter definition is exact, the square feet to square meters direction is exact too. The reverse factor is an unending decimal, so it is quoted to eleven decimal places here — more than enough precision for any building, land, or material calculation.
Conversion table
| Area | Square feet (ft²) | Square meters (m²) |
|---|---|---|
| 1 square foot | 1 | 0.09290304 |
| 100 square feet | 100 | 9.290304 |
| 500 square feet | 500 | 46.45152 |
| 1000 square feet | 1000 | 92.90304 |
| 1 square meter | 10.76391041671 | 1 |
For conversions between other units of area, use the area unit converter.
Examples
The examples below use the same numbers as the calculator’s test fixtures.
Example 1: Convert 1 square foot to square meters
One square foot is exactly 0.09290304 square meters — a little under a tenth of a square meter.
Example 2: Convert 100 square feet to square meters
A small bedroom of 100 ft²:
So 100 square feet is about 9.29 square meters.
Example 3: Convert 1000 square feet to square meters
A modest apartment listed at 1000 ft²:
That is roughly 92.9 square meters.
Example 4: Convert 100 square meters back to square feet
Working in the other direction:
A 100 m² flat is about 1076.39 square feet.
Practical applications
Property listings are the most common reason to convert. A buyer used to square feet who is looking at homes in Europe, Australia, or Asia sees areas quoted in square meters, and the conversion is the only way to judge whether a listing is genuinely larger or smaller than what they know.
Flooring, tiling, carpet, and paint are sold by coverage area, and the packaging unit often does not match the unit on the plan. A room measured in square feet against tile boxes labelled in square meters needs one conversion before any quantity or budget estimate makes sense.
Architects and engineers producing SI drawings for clients or contractors who think in customary units convert in both directions routinely, so the same plan can be described accurately to every audience without redrawing anything.
Agricultural and landscaping work sits at the same boundary: seed, fertilizer, and mulch coverage rates are published in whichever system the manufacturer prefers, while the plot itself may have been measured in the other.
Practical notes
Area conversion factors are the square of the corresponding length factor. Since one foot is 0.3048 meters, the area factor is 0.3048², not 0.3048 — a mistake that inflates or shrinks a result by more than threefold and is the single most frequent error in area conversion.
For rough mental arithmetic, dividing square feet by 10 gets you close: 1000 ft² ÷ 10 = 100 m² against a true 92.9 m². The estimate runs about 7.6 percent high, which is fine for a first impression but not for ordering materials.
The conversion is exact in the square feet to square meters direction because both units are defined against the meter. Any rounding you see comes from the reverse factor or from the precision you choose to display, never from the definition itself.
Frequently asked questions
How many square meters are in a square foot?
One square foot equals exactly 0.09290304 square meters.
How do I convert sq feet to square meters?
Multiply the number of square feet by 0.09290304. For example, 1000 ft² × 0.09290304 = 92.90304 m².
How many square meters is 1000 square feet?
1000 square feet is 92.90304 square meters, or about 92.9 m².
How many square meters is 1500 square feet?
1500 square feet is 139.35456 square meters, or roughly 139.35 m².
How do I convert square meters back to square feet?
Multiply the number of square meters by 10.76391041671. For instance, 100 m² × 10.76391041671 = 1076.39 ft².
Why is the conversion factor 0.09290304?
One foot is defined as exactly 0.3048 meters. A square foot is therefore 0.3048 × 0.3048 = 0.09290304 square meters, which makes the factor exact rather than approximate.