Square Nanometers to Square Inches: the quick answer
1 nm² = 1.55 × 10⁻¹⁵ in²
1 square nanometer equals 1.55 × 10⁻¹⁵ square inches
To convert square nanometers to square inches, multiply the value by 1.55 × 10⁻¹⁵. To go the other way, multiply square inches by 645,160,000,000,000 to get square nanometers.