square inch | 1 sq in | 2 sq in | 3 sq in | 4 sq in | 5 sq in | 6 sq in | 7 sq in | 8 sq in | 9 sq in | 10 sq in | 11 sq in | 12 sq in | 13 sq in | 14 sq in | 15 sq in | 16 sq in | 17 sq in | 18 sq in | 19 sq in | 20 sq in | 21 sq in | 22 sq in | 23 sq in | 24 sq in | 25 sq in | 26 sq in | 27 sq in | 28 sq in | 29 sq in | 30 sq in | 31 sq in | 32 sq in | 33 sq in | 34 sq in | 35 sq in | 36 sq in | 37 sq in | 38 sq in | 39 sq in | 40 sq in | 41 sq in | 42 sq in | 43 sq in | 44 sq in | 45 sq in | 46 sq in | 47 sq in | 48 sq in | 49 sq in | 50 sq in | 51 sq in | 52 sq in | 53 sq in | 54 sq in | 55 sq in | 56 sq in | 57 sq in | 58 sq in | 59 sq in | 60 sq in | 61 sq in | 62 sq in | 63 sq in | 64 sq in | 65 sq in | 66 sq in | 67 sq in | 68 sq in | 69 sq in | 70 sq in | 71 sq in | 72 sq in | 73 sq in | 74 sq in | 75 sq in | 76 sq in | 77 sq in | 78 sq in | 79 sq in | 80 sq in | 81 sq in | 82 sq in | 83 sq in | 84 sq in | 85 sq in | 86 sq in | 87 sq in | 88 sq in | 89 sq in | 90 sq in | 91 sq in | 92 sq in | 93 sq in | 94 sq in | 95 sq in | 96 sq in | 97 sq in | 98 sq in | 99 sq in | 100 sq in |
barn | 6.4516 × 1024 b | 1.29032 × 1025 b | 1.93548 × 1025 b | 2.58064 × 1025 b | 3.2258 × 1025 b | 3.87096 × 1025 b | 4.51612 × 1025 b | 5.16128 × 1025 b | 5.80644 × 1025 b | 6.4516 × 1025 b | 7.09676 × 1025 b | 7.74192 × 1025 b | 8.38708 × 1025 b | 9.03224 × 1025 b | 9.6774 × 1025 b | 1.032256 × 1026 b | 1.096772 × 1026 b | 1.161288 × 1026 b | 1.225804 × 1026 b | 1.29032 × 1026 b | 1.354836 × 1026 b | 1.419352 × 1026 b | 1.483868 × 1026 b | 1.548384 × 1026 b | 1.6129 × 1026 b | 1.677416 × 1026 b | 1.741932 × 1026 b | 1.806448 × 1026 b | 1.870964 × 1026 b | 1.93548 × 1026 b | 1.999996 × 1026 b | 2.064512 × 1026 b | 2.129028 × 1026 b | 2.193544 × 1026 b | 2.25806 × 1026 b | 2.322576 × 1026 b | 2.387092 × 1026 b | 2.451608 × 1026 b | 2.516124 × 1026 b | 2.58064 × 1026 b | 2.645156 × 1026 b | 2.709672 × 1026 b | 2.774188 × 1026 b | 2.838704 × 1026 b | 2.90322 × 1026 b | 2.967736 × 1026 b | 3.032252 × 1026 b | 3.096768 × 1026 b | 3.161284 × 1026 b | 3.2258 × 1026 b | 3.290316 × 1026 b | 3.354832 × 1026 b | 3.419348 × 1026 b | 3.483864 × 1026 b | 3.54838 × 1026 b | 3.612896 × 1026 b | 3.677412 × 1026 b | 3.741928 × 1026 b | 3.806444 × 1026 b | 3.87096 × 1026 b | 3.935476 × 1026 b | 3.999992 × 1026 b | 4.064508 × 1026 b | 4.129024 × 1026 b | 4.19354 × 1026 b | 4.258056 × 1026 b | 4.322572 × 1026 b | 4.387088 × 1026 b | 4.451604 × 1026 b | 4.51612 × 1026 b | 4.580636 × 1026 b | 4.645152 × 1026 b | 4.709668 × 1026 b | 4.774184 × 1026 b | 4.8387 × 1026 b | 4.903216 × 1026 b | 4.967732 × 1026 b | 5.032248 × 1026 b | 5.096764 × 1026 b | 5.16128 × 1026 b | 5.225796 × 1026 b | 5.290312 × 1026 b | 5.354828 × 1026 b | 5.419344 × 1026 b | 5.48386 × 1026 b | 5.548376 × 1026 b | 5.612892 × 1026 b | 5.677408 × 1026 b | 5.741924 × 1026 b | 5.80644 × 1026 b | 5.870956 × 1026 b | 5.935472 × 1026 b | 5.999988 × 1026 b | 6.064504 × 1026 b | 6.12902 × 1026 b | 6.193536 × 1026 b | 6.258052 × 1026 b | 6.322568 × 1026 b | 6.387084 × 1026 b | 6.4516 × 1026 b |
A square inch (plural: square inches) is a unit of area, equal to the area of a square with sides of one inch.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
square inch | sq in | ≡ 1 in × 1 in | ≡ 6.4516×10−4 m2 | Imperial/US |
square inches | barns | square inches | barns |
---|---|---|---|
1 | ≡ 6.4516E+24 | 6 | ≡ 3.87096E+25 |
2 | ≡ 1.29032E+25 | 7 | ≡ 4.51612E+25 |
3 | ≡ 1.93548E+25 | 8 | ≡ 5.16128E+25 |
4 | ≡ 2.58064E+25 | 9 | ≡ 5.80644E+25 |
5 | ≡ 3.2258E+25 | 10 | ≡ 6.4516E+25 |
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 unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
barn | b | ≡ 10−28 m2 | ≡ 10−28 m2 | Nuclear Physics |
barns | square inches | barns | square inches |
---|---|---|---|
1 | ≡ 1.5500031000062E-25 | 6 | ≡ 9.3000186000372E-25 |
2 | ≡ 3.1000062000124E-25 | 7 | ≡ 1.0850021700043E-24 |
3 | ≡ 4.6500093000186E-25 | 8 | ≡ 1.240002480005E-24 |
4 | ≡ 6.2000124000248E-25 | 9 | ≡ 1.3950027900056E-24 |
5 | ≡ 7.750015500031E-25 | 10 | ≡ 1.5500031000062E-24 |
square inches | barns |
---|---|
1 | ≡ 6.4516 × 1024 |
1.5500031000062 × 10-25 | ≡ 1 |
Symbol | Definition |
---|---|
≡ | exactly equal |
≈ | approximately equal to |
= | equal to |
digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |