EVERYDAY
Area
Surface, land and cross-sectional area.
Try a decimal, 1e-9, 1/3, or 5 1/2.
Result1e34 b1 km² = 1e34 b
EVERYDAY · ENGINEERING · SCIENCE
km² to b Converter
Convert square kilometre (km²) to barn (b). Enter a value for an instant result, or use the examples and reverse conversion below.
520units ready to convert
HOW IT IS CALCULATED
Convert through square metre
Enter a square kilometre value to calculate barn with full internal precision before display rounding.
Display PrecisionAuto · 6 significant digits
Auto trims unnecessary zeroes and uses scientific notation for extreme magnitudes. Use Digits to set the display precision; calculations retain full precision.
QUICK REFERENCE
All units in this quantity
| Unit | Symbol | Converted value |
|---|---|---|
| square micrometrefrom km² | µm² | 1e18 |
| square millimetrefrom km² | mm² | 1000000000000 |
| square centimetrefrom km² | cm² | 10000000000 |
| square decimetrefrom km² | dm² | 100000000 |
| square metrefrom km² | m² | 1000000 |
| arefrom km² | a | 10000 |
| hectarefrom km² | ha | 100 |
| square kilometrefrom km² | km² | 1 |
| square inchfrom km² | in² | 1550000000 |
| square footfrom km² | ft² | 10763900 |
| square yardfrom km² | yd² | 1195990 |
| acrefrom km² | acre | 247.105 |
| square milefrom km² | mi² | 0.386102 |
| barnfrom km² | b | 1e34 |
SI symbols follow international notation. U.S. and Imperial measures are labelled separately where their values differ.
km² to b Conversion Reference
Square Kilometre (km²) and barn (b) are units of area. Use this page to convert in either direction.
Conversion Examples
| Square Kilometre (km²) | Barn (b) |
|---|---|
| 1 km² | 1e34 b |
| 5 km² | 5e34 b |
| 10 km² | 1e35 b |
| 100 km² | 1e36 b |
Examples are rounded to 6 significant digits. The interactive converter retains full calculation precision; change Display Precision to see more digits.
Reverse Conversion
b to km² (barn to square kilometre)
Related Area Conversions
km² to µm² (square kilometre to square micrometre)km² to mm² (square kilometre to square millimetre)km² to cm² (square kilometre to square centimetre)km² to dm² (square kilometre to square decimetre)km² to m² (square kilometre to square metre)km² to a (square kilometre to are)km² to ha (square kilometre to hectare)km² to in² (square kilometre to square inch)km² to ft² (square kilometre to square foot)km² to yd² (square kilometre to square yard)km² to acre (square kilometre to acre)km² to mi² (square kilometre to square mile)