Convert Square Inches to Square Meters
One square inch equals 0.000645 square meters. Type any value to convert square inches to square meters instantly — with a full reference table below.
Convert Square Inches to Square Meters
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Conversion formula
To convert square inches to square meters, multiply by 0.000645. One square inch equals 0.000645 m², and one square meter equals 1,550.0031 in².
Square Inches to Square Meters table
About converting Square Inches to Square Meters
Square Inches (in²) and Square Meters (m²) are both units of area. The exact factor is 1 in² = 0.000645 m², so multiply by 0.000645 to go from square inches to square meters (or divide to go back).
The conversion is exact and runs entirely in your browser. Need the reverse? Use the Square Meters to Square Inches converter, or the full unit converter for every unit at once.
Frequently asked questions
How many square meters are in one square inch?
One square inch equals 0.000645 square meters.
How do I convert square inches to square meters?
Multiply the number of square inches by 0.000645. For example, 10 square inches = 0.006452 square meters.
What is 5 square inches in square meters?
5 square inches is 0.003226 square meters.