Convert Square inches to Square meters
1 square inch is 0.0006452 m². One square inch is exactly 0.00064516 square meters.
One square inch is 6.4516 × 10^-4 square meters. To convert square inches to square meters, multiply by 6.4516 × 10^-4; to go the other way, divide by 6.4516 × 10^-4 or multiply by 1550.0031. The relation is exact but the figure is not: it is a rounding of a number that does not terminate, and it follows from NIST Office of Weights and Measures. An inch on a side.
Factor checked against the defining standard · How we check
- Square inches × 6.4516 × 10^-4
1 * 0.00064520.001 m²
1 square inch in every area unit
| Unit | Value | Exact factor |
|---|---|---|
| square inches (as entered) | 1 sq in | — |
| square feet | 0.006944444444 sq ft | × 0.00694444444444 |
| square yards | 0.0007716049383 sq yd | × 0.000771604938272 |
| acres | 0.0000001594225079 ac | × 0.000000159422507907 |
| square meters | 0.00064516 m² | × 0.00064516 |
| square millimetres | 645.16 mm² | × 645.16 |
| square centimetres | 6.4516 cm² | × 6.4516 |
| square kilometres | 0.00000000064516 km² | × 0.00000000064516 |
| square miles | 0.0000000002490976686 mi² | × 0.000000000249097668605 |
| hectares | 0.000000064516 ha | × 0.000000064516 |
Factors are entered by hand from NIST Office of Weights and Measures rather than derived from a units library, so the ones that terminate are exact rather than rounded.
The same converter answers this pair however it is written: square inches to square metres is the British spelling of the same units — the metre and the litre are spelled that way outside the United States and the quantity does not change, and sqin to sqm is how the symbols are typed on a keyboard with no superscript on it.
How do you convert square inches to square meters? The converter and the working
- 1.Take the measurement in square inches.
- 2.Multiply by 6.4516 × 10^-4 — that is how many square meters fit in one square inch.
- 3.To go back the other way, divide by 6.4516 × 10^-4, or multiply by 1550.0031.
Worked example: 25 square inches to square meters
- Formula
- sq in × 6.4516 × 10^-4 = m²
- Arithmetic
- 25 × 6.4516 × 10^-4 = 0.02 m²
- Answer
- 25 sq in = 0.02 m²
The factor is rounded for display; the figure above is computed from the full value.
Square inches to square meters conversion table
| Square inches | Square meters |
|---|---|
| 1 sq in | 0.0006452 m² |
| 2 sq in | 0.00129 m² |
| 3 sq in | 0.001935 m² |
| 4 sq in | 0.002581 m² |
| 5 sq in | 0.003226 m² |
| 6 sq in | 0.003871 m² |
| 7 sq in | 0.004516 m² |
| 8 sq in | 0.01 m² |
| 9 sq in | 0.01 m² |
| 10 sq in | 0.01 m² |
| 12 sq in | 0.01 m² |
| 15 sq in | 0.01 m² |
| 20 sq in | 0.01 m² |
| 25 sq in | 0.02 m² |
| 50 sq in | 0.03 m² |
| 100 sq in | 0.06 m² |
| 200 sq in | 0.13 m² |
| 300 sq in | 0.19 m² |
| 500 sq in | 0.32 m² |
| 1000 sq in | 0.65 m² |
| 2000 sq in | 1.29 m² |
| 5000 sq in | 3.23 m² |
| 10000 sq in | 6.45 m² |
What is a square inch?
An inch on a side. 144 of them make a square foot.
What is a square meter?
A meter on a side, and about 10.764 square feet.
How many square meters are in a square inch?
One square inch is 6.4516 × 10^-4 square meters. Going the other way, one square meter is 1550.0031 square inches. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.
Every area unit here
The whole group — 10 units with their symbols and the size of each one in square meters — is on the conversion index, along with every pair it makes. The table above already gives each of them relative to a square inch.
Cite this page
- APA
- Rule Calculator. (2026). Convert Square inches to square meters. Rule Calculator. https://rulecalculators.com/convert/square-inch-to-square-meter
- MLA
- "Convert Square inches to square meters." Rule Calculator, August 16, 2026, https://rulecalculators.com/convert/square-inch-to-square-meter.
- Chicago
- Rule Calculator. "Convert Square inches to square meters." Rule Calculator. Last reviewed August 16, 2026. https://rulecalculators.com/convert/square-inch-to-square-meter.
The date is when the figures on this page were last checked against their source, not the day you opened it. Add your own access date if your style needs one.
Questions people actually ask
- How many square meters are in a square inch?
- 6.4516 × 10^-4. A meter on a side, and about 10.764 square feet.
- How do I convert square meters back to square inches?
- Divide by 6.4516 × 10^-4, or multiply by 1550.0031 — they are the same operation.
Other area conversions
Square meters to square inches — the same conversion the other way.