Convert 1 barn to square kilometer

1 b (barn) is equal to 0.00000000000000000000000000000000010000000000000001 km² (square kilometer). To convert from barn to square kilometer, multiply by 0.0000000000000000000000000000000001 or divide by 10,000,000,000,000,001,000,000,000,000,000,000.

• 1 b × 1.0E-34 = 1.0E-34 km²
• 1 b ÷ 1.0E+34 = 1.0E-34 km²