Formula

km² = b / 1.0E+34

Quick Rough Maths

To get the Square Kilometres, divide the number of Barns by 1.0E+22 trillion

Barns (b) in 1 Square Kilometre

There are 1.0E+34 Barns in 1 Square Kilometre

Square Kilometres (km²) in 1 barn

There are 0 Square Kilometres in 1 barn

Symbol: **b**

Unit System: Particle Physics

Unit System: Particle Physics

The barn is a unit of area and is used in particle physics with the symbol b.

It represents approximately the area of the cross-section of a uraneum nucleus, so is very small compared to most other recognised units of area.

It is also used to measure the interaction of a nucleus with an electric field gradient in nuclear quadrupole and magnetic resonance.

Symbol: **km²**

Unit System: SI

Unit System: SI

The square kilometre is a unit of area and is a multiple of the square metre; an SI derived unit. It has the symbol km².

A square kilometre is equal to the area of a square with edges 1km long. There are 1,000,000 square metres in a square kilometre.

Square kilometres are often used to describe expansive areas of land due to the large unit size.

10000b = 0km²

20000b = 0km²

30000b = 0km²

40000b = 0km²

50000b = 0km²

60000b = 0km²

70000b = 0km²

80000b = 0km²

90000b = 0km²

100000b = 0km²

110000b = 0km²

120000b = 0km²

130000b = 0km²

140000b = 0km²

150000b = 0km²

160000b = 0km²

170000b = 0km²

180000b = 0km²

190000b = 0km²

200000b = 0km²

210000b = 0km²

220000b = 0km²

230000b = 0km²

240000b = 0km²

260000b = 0km²

270000b = 0km²

280000b = 0km²

290000b = 0km²

300000b = 0km²

310000b = 0km²

320000b = 0km²

330000b = 0km²

340000b = 0km²

350000b = 0km²

360000b = 0km²

370000b = 0km²

380000b = 0km²

390000b = 0km²

400000b = 0km²

410000b = 0km²

420000b = 0km²

430000b = 0km²

440000b = 0km²

450000b = 0km²

460000b = 0km²

470000b = 0km²

480000b = 0km²

490000b = 0km²

510000b = 0km²

520000b = 0km²

530000b = 0km²

540000b = 0km²

550000b = 0km²

560000b = 0km²

570000b = 0km²

580000b = 0km²

590000b = 0km²

600000b = 0km²

610000b = 0km²

620000b = 0km²

630000b = 0km²

640000b = 0km²

650000b = 0km²

660000b = 0km²

670000b = 0km²

680000b = 0km²

690000b = 0km²

700000b = 0km²

710000b = 0km²

720000b = 0km²

730000b = 0km²

740000b = 0km²

760000b = 0km²

770000b = 0km²

780000b = 0km²

790000b = 0km²

800000b = 0km²

810000b = 0km²

820000b = 0km²

830000b = 0km²

840000b = 0km²

850000b = 0km²

860000b = 0km²

870000b = 0km²

880000b = 0km²

890000b = 0km²

900000b = 0km²

910000b = 0km²

920000b = 0km²

930000b = 0km²

940000b = 0km²

950000b = 0km²

960000b = 0km²

970000b = 0km²

980000b = 0km²

990000b = 0km²