Length and Area
in²tom²
Convert square inches (in²) to square metres (m²).
Factor1 in² = 0.00064516 m²
Converter
in²
Accepts numbers or expressions, e.g. 150 + 14.7
Result
m²
Rendered to 6 significant figures.
Formula
Formula
m² = in² × 0.00064516
Multiply any value in square inches by 0.00064516 to obtain the value in square metres.
Worked example
Convert 1000 in² to m².
- 01Start with 1000 in².
- 02Multiply by the conversion factor: 1000 × 0.00064516 = 0.64516 m².
Result1000 in² = 0.64516 m²
Conversion table
| in² | m² |
|---|---|
| 1 | 0.00064516 |
| 2 | 0.0012903 |
| 5 | 0.0032258 |
| 10 | 0.0064516 |
| 20 | 0.012903 |
| 50 | 0.032258 |
| 100 | 0.064516 |
| 200 | 0.12903 |
| 500 | 0.32258 |
| 1000 | 0.64516 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from in² to m²?
1 in² equals 0.00064516 m². To convert, multiply the value in square inches by 0.00064516.
How do I convert 1 in² to m²?
1 in² = 0.00064516 m². For any value, multiply by 0.00064516.
How do I convert m² back to in²?
Divide by the same factor — or equivalently, multiply by 1550.003. So 1 m² = 1550 in².
When would I need to convert square inch to square metre?
Area conversions are common in heat-exchanger surface area, site layout, and land-use planning where imperial and metric conventions mix.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).