Square Centimeters to Barns: the quick answer
1 cm² = 1 × 10²⁴ b
1 square centimeter equals 1 × 10²⁴ barns
To convert square centimeters to barns, multiply the value by 1 × 10²⁴. To go the other way, multiply barns by 1 × 10⁻²⁴ to get square centimeters.