تحويل البوصة المربعة إلى المتر المربع: الهندسة والتصنيع والبناء

One square inch equals exactly 0.00064516 square meters. This precise conversion factor comes from the internationally standardized definition of 1 inch = 0.0254 meters (established in 1959). To convert any number of square inches to square meters, multiply by 0.00064516. For example: 100 square inches × 0.00064516 = 0.064516 square meters. This exact relationship ensures consistency in international engineering and manufacturing specifications.

The precise factor 0.00064516 comes from squaring the exact linear conversion: 1 inch = 0.0254 meters, so 1 in² = (0.0254)² = 0.00064516 m². Using the rounded approximation 0.000645 introduces a 0.025% error that accumulates in precision applications. For manufacturing components where tolerances are ±0.1%, this error is unacceptable. International standards require using the full precision factor to maintain dimensional accuracy across imperial-to-metric conversions in technical documentation and quality assurance processes.