Square Meters to Square Inches
Type a value in either box to convert between square meters and square inches. The factor is 1550.
| Square Meters | Square Inches |
|---|---|
| 1 m² | 1550.0031 in² |
| 2 m² | 3100.0062 in² |
| 3 m² | 4650.0093 in² |
| 5 m² | 7750.0155 in² |
| 10 m² | 15500.031 in² |
| 25 m² | 38750.0775 in² |
| 50 m² | 77500.155 in² |
| 100 m² | 155000.310001 in² |
How to use
- Enter a value in the Square Meters field.
- The Square Inches figure appears immediately — no button to press.
- Typing in the Square Inches field converts back to Square Meters the same way.
- Use the reference table for the values that come up most often.
Square Meters to Square Inches formula
To convert square meters to square inches, multiply by 1550.0031.
in² = m² × 1550.0031
Why this factor: the square meter and the square inch are both defined against the square meter, so dividing one definition by the other gives 1550.0031 directly. Both definitions are set out in full below.
To go the other way, divide by 1550.0031 — or use the Square Inches to Square Meters converter, which is the same calculation reversed.
Worked example
Start with 1000 m². Multiply by 1550.0031 to get 1550003.100006 in².
1000 m² × 1550.0031 = 1550003.100006 in²
The converter above does this for any value you type, in either direction.
What is a square meter?
The square meter is the SI unit of area — the surface of a one-meter square.
Definition: Derived directly from the meter.
Where it is used: Floor area in property listings, land plots, and material coverage worldwide outside the US.
What is a square inch?
A square inch is the area of a one-inch square, used for small areas and pressure.
Definition: Exactly 0.00064516 square meter, following from the exact 25.4 mm inch.
Where it is used: Print and label areas, gasket and seal faces, and the denominator in psi.
Square Meters vs Square Inches
The square meter is an SI unit while the square inch is an imperial unit. That is why the factor between them is not a round number: the two systems were defined independently and only later tied together by exact agreement.
Frequently asked questions
How many square inches are in a square meter?
One square meter equals 1550.0031 square inches.
What is the formula to convert square meters to square inches?
Multiply the number of square meters by 1550.0031. To reverse it, divide by 1550.0031 instead.
How do I convert square inches back to square meters?
Divide by 1550.0031, which is the same as multiplying by 0.00064516.
How many square inches are in 10 square meters?
10 m² works out to 15500.031 in².
How is the square meter defined?
Derived directly from the meter.