# barn to square kilometre conversion

Conversion number between barn [b] and square kilometre [km²] is 1.0 × 10-34. This means, that barn is smaller unit than square kilometre.

### Contents [show][hide]

Switch to reverse conversion:
from square kilometre to barn conversion

### Enter the number in barn:

Decimal Fraction Exponential Expression
 [b]
eg.: 10.12345 or 1.123e5

Result in square kilometre

?
 precision 0 1 2 3 4 5 6 7 8 9 [info] Decimal: Exponential:

### Calculation process of conversion value

• 1 barn = (exactly) (1*10^-28) / (1000000) = 1.0 × 10-34 square kilometre
• 1 square kilometre = (exactly) (1000000) / (1*10^-28) = 1.0 × 10+34 barn
• ? barn × (1*10^-28  ("m²"/"barn")) / (1000000  ("m²"/"square kilometre")) = ? square kilometre

### High precision conversion

If conversion between barn to square-metre and square-metre to square kilometre is exactly definied, high precision conversion from barn to square kilometre is enabled.

Decimal places: (0-800)

barn
Result in square kilometre:
?

### barn to square kilometre conversion chart

 Start value: [barn] Step size [barn] How many lines? (max 100)

visual:
barnsquare kilometre
00
101.0 × 10-33
202.0 × 10-33
303.0 × 10-33
404.0 × 10-33
505.0 × 10-33
606.0 × 10-33
707.0 × 10-33
808.0 × 10-33
909.0 × 10-33
1001.0 × 10-32
1101.1 × 10-32
Copy to Excel

## Multiple conversion

Enter numbers in barn and click convert button.
One number per line.

Converted numbers in square kilometre:
Click to select all

## Details about barn and square kilometre units:

Convert Barn to other unit:

### barn

Definition of barn unit: ≡ 10−28 m². Originally used in nuclear physics for expressing the cross sectional area of nuclei and nuclear reactions.

Convert Square kilometre to other unit:

### square kilometre

Definition of square kilometre unit: = 1km x 1km.

← Back to Area units