Convert Square Centimeters to Barns
Convert Square Centimeters (cm²) to Barns (b) instantly and accurately.
Conversion Formula
b = cm² × 1.000000000e+24
About Square Centimeters
A square centimeter (cm²) is a metric unit of area equal to a square with sides of one centimeter (10 mm × 10 mm). It is widely used for measuring moderate-sized surfaces like postage stamps, credit cards, or smartphone screens. A standard credit card has an area of about 46 cm². This unit is common in everyday crafts, school science, and smaller construction projects where precision matters but square meters would be too large.
About Barns
A barn (b) is a unit of area used in nuclear and particle physics to measure effective cross-sections of atomic nuclei and particle interaction probabilities. Equal to 10⁻²⁸ m² (10⁻²⁴ cm²), it was humorously named during the Manhattan Project - physicists joked that uranium nuclei were 'as big as a barn' at the subatomic scale. Particle physics experiments at accelerators like CERN report cross-sections in millibarns (mb), microbarns (μb), nanobarns (nb), and femtobarns (fb).
Quick Reference Table
| Square Centimeters (cm²) | Barns (b) |
|---|---|
| 1 cm² | 1 × 1024 b |
| 2 cm² | 2 × 1024 b |
| 5 cm² | 5 × 1024 b |
| 10 cm² | 1 × 1025 b |
| 25 cm² | 2.5 × 1025 b |
| 50 cm² | 5 × 1025 b |
| 100 cm² | 1 × 1026 b |