# Attobarns to Barns Conversion

Attobarn to barn conversion allow you make a conversion between attobarn and barn easily. You can find the tool in the following.

to

input
= 1.0 × 10-18
= 1.0E-18
= 1.0e-18

= 2.0 × 10-18
= 2.0E-18
= 2.0e-18

= 3.0 × 10-18
= 3.0E-18
= 3.0e-18

= 4.0 × 10-18
= 4.0E-18
= 4.0e-18

= 5.0 × 10-18
= 5.0E-18
= 5.0e-18

### Quick Look: attobarns to barns

 attobarn 1 ab 2 ab 3 ab 4 ab 5 ab 6 ab 7 ab 8 ab 9 ab 10 ab 11 ab 12 ab 13 ab 14 ab 15 ab 16 ab 17 ab 18 ab 19 ab 20 ab 21 ab 22 ab 23 ab 24 ab 25 ab 26 ab 27 ab 28 ab 29 ab 30 ab 31 ab 32 ab 33 ab 34 ab 35 ab 36 ab 37 ab 38 ab 39 ab 40 ab 41 ab 42 ab 43 ab 44 ab 45 ab 46 ab 47 ab 48 ab 49 ab 50 ab 51 ab 52 ab 53 ab 54 ab 55 ab 56 ab 57 ab 58 ab 59 ab 60 ab 61 ab 62 ab 63 ab 64 ab 65 ab 66 ab 67 ab 68 ab 69 ab 70 ab 71 ab 72 ab 73 ab 74 ab 75 ab 76 ab 77 ab 78 ab 79 ab 80 ab 81 ab 82 ab 83 ab 84 ab 85 ab 86 ab 87 ab 88 ab 89 ab 90 ab 91 ab 92 ab 93 ab 94 ab 95 ab 96 ab 97 ab 98 ab 99 ab 100 ab barn 1.0 × 10-18 b 2.0 × 10-18 b 3.0 × 10-18 b 4.0 × 10-18 b 5.0 × 10-18 b 6.0 × 10-18 b 7.0 × 10-18 b 8.0 × 10-18 b 9.0 × 10-18 b 1.0 × 10-17 b 1.1 × 10-17 b 1.2 × 10-17 b 1.3 × 10-17 b 1.4 × 10-17 b 1.5 × 10-17 b 1.6 × 10-17 b 1.7 × 10-17 b 1.8 × 10-17 b 1.9 × 10-17 b 2.0 × 10-17 b 2.1 × 10-17 b 2.2 × 10-17 b 2.3 × 10-17 b 2.4 × 10-17 b 2.5 × 10-17 b 2.6 × 10-17 b 2.7 × 10-17 b 2.8 × 10-17 b 2.9 × 10-17 b 3.0 × 10-17 b 3.1 × 10-17 b 3.2 × 10-17 b 3.3 × 10-17 b 3.4 × 10-17 b 3.5 × 10-17 b 3.6 × 10-17 b 3.7 × 10-17 b 3.8 × 10-17 b 3.9 × 10-17 b 4.0 × 10-17 b 4.1 × 10-17 b 4.2 × 10-17 b 4.3 × 10-17 b 4.4 × 10-17 b 4.5 × 10-17 b 4.6 × 10-17 b 4.7 × 10-17 b 4.8 × 10-17 b 4.9 × 10-17 b 5.0 × 10-17 b 5.1 × 10-17 b 5.2 × 10-17 b 5.3 × 10-17 b 5.4 × 10-17 b 5.5 × 10-17 b 5.6 × 10-17 b 5.7 × 10-17 b 5.8 × 10-17 b 5.9 × 10-17 b 6.0 × 10-17 b 6.1 × 10-17 b 6.2 × 10-17 b 6.3 × 10-17 b 6.4 × 10-17 b 6.5 × 10-17 b 6.6 × 10-17 b 6.7 × 10-17 b 6.8 × 10-17 b 6.9 × 10-17 b 7.0 × 10-17 b 7.1 × 10-17 b 7.2 × 10-17 b 7.3 × 10-17 b 7.4 × 10-17 b 7.5 × 10-17 b 7.6 × 10-17 b 7.7 × 10-17 b 7.8 × 10-17 b 7.9 × 10-17 b 8.0 × 10-17 b 8.1 × 10-17 b 8.2 × 10-17 b 8.3 × 10-17 b 8.4 × 10-17 b 8.5 × 10-17 b 8.6 × 10-17 b 8.7 × 10-17 b 8.8 × 10-17 b 8.9 × 10-17 b 9.0 × 10-17 b 9.1 × 10-17 b 9.2 × 10-17 b 9.3 × 10-17 b 9.4 × 10-17 b 9.5 × 10-17 b 9.6 × 10-17 b 9.7 × 10-17 b 9.8 × 10-17 b 9.9 × 10-17 b 1.0 × 10-16 b

A attobarn (symbol: ab) is a unit of area equal to 10−46 m2.

Name of unitSymbolDefinitionRelation to SI unitsUnit System
attobarnab

≡ 10−46 m2

≡ 10−46 m2

Nuclear Physics

#### conversion table

attobarnsbarnsattobarnsbarns
1≡ 1.0E-186≡ 6.0E-18
2≡ 2.0E-187≡ 7.0E-18
3≡ 3.0E-188≡ 8.0E-18
4≡ 4.0E-189≡ 9.0E-18
5≡ 5.0E-1810≡ 1.0E-17

A barn (symbol: b) is a unit of area equal to 10−28 m2 (100 fm2). Originally used in nuclear physics for expressing the cross sectional area of nuclei and nuclear reactions, today it is also used in all fields of high-energy physics to express the cross sections of any scattering process, and is best understood as a measure of the probability of interaction between small particles.

Name of unitSymbolDefinitionRelation to SI unitsUnit System
barnb

≡ 10−28 m2

≡ 10−28 m2

Nuclear Physics

### conversion table

barnsattobarnsbarnsattobarns
1≡ 1.0E+186≡ 6.0E+18
2≡ 2.0E+187≡ 7.0E+18
3≡ 3.0E+188≡ 8.0E+18
4≡ 4.0E+189≡ 9.0E+18
5≡ 5.0E+1810≡ 1.0E+19

attobarnsbarns
1≡ 1.0 × 10-18
1.0 × 1018≡ 1

### Legend

SymbolDefinition
exactly equal
approximately equal to
=equal to
digitsindicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …)