Barns to Square Inches: the quick answer
1 b = 1.55 × 10⁻²⁵ in²
1 barn equals 1.55 × 10⁻²⁵ square inches
To convert barns to square inches, multiply the value by 1.55 × 10⁻²⁵. To go the other way, multiply square inches by 6.4516 × 10²⁴ to get barns.