| 0in² | 0b |
| 1in² | 6.4516 × 10²⁴b |
| 2in² | 1.29032 × 10²⁵b |
| 3in² | 1.93548 × 10²⁵b |
| 4in² | 2.58064 × 10²⁵b |
| 5in² | 3.2258 × 10²⁵b |
| 6in² | 3.87096 × 10²⁵b |
| 7in² | 4.51612 × 10²⁵b |
| 8in² | 5.16128 × 10²⁵b |
| 9in² | 5.80644 × 10²⁵b |
| 10in² | 6.4516 × 10²⁵b |
| 11in² | 7.09676 × 10²⁵b |
| 12in² | 7.74192 × 10²⁵b |
| 13in² | 8.38708 × 10²⁵b |
| 14in² | 9.03224 × 10²⁵b |
| 15in² | 9.6774 × 10²⁵b |
| 16in² | 1.032256 × 10²⁶b |
| 17in² | 1.096772 × 10²⁶b |
| 18in² | 1.161288 × 10²⁶b |
| 19in² | 1.225804 × 10²⁶b |
| 20in² | 1.29032 × 10²⁶b |
| 21in² | 1.354836 × 10²⁶b |
| 22in² | 1.419352 × 10²⁶b |
| 23in² | 1.483868 × 10²⁶b |
| 24in² | 1.548384 × 10²⁶b |
| 25in² | 1.6129 × 10²⁶b |
| 26in² | 1.677416 × 10²⁶b |
| 27in² | 1.741932 × 10²⁶b |
| 28in² | 1.806448 × 10²⁶b |
| 29in² | 1.870964 × 10²⁶b |
| 30in² | 1.93548 × 10²⁶b |
| 31in² | 1.999996 × 10²⁶b |
| 32in² | 2.064512 × 10²⁶b |
| 33in² | 2.129028 × 10²⁶b |
| 34in² | 2.193544 × 10²⁶b |
| 35in² | 2.25806 × 10²⁶b |
| 36in² | 2.322576 × 10²⁶b |
| 37in² | 2.387092 × 10²⁶b |
| 38in² | 2.451608 × 10²⁶b |
| 39in² | 2.516124 × 10²⁶b |
| 40in² | 2.58064 × 10²⁶b |
| 41in² | 2.645156 × 10²⁶b |
| 42in² | 2.709672 × 10²⁶b |
| 43in² | 2.774188 × 10²⁶b |
| 44in² | 2.838704 × 10²⁶b |
| 45in² | 2.90322 × 10²⁶b |
| 46in² | 2.967736 × 10²⁶b |
| 47in² | 3.032252 × 10²⁶b |
| 48in² | 3.096768 × 10²⁶b |
| 49in² | 3.161284 × 10²⁶b |
| 50in² | 3.2258 × 10²⁶b |
| 51in² | 3.290316 × 10²⁶b |
| 52in² | 3.354832 × 10²⁶b |
| 53in² | 3.419348 × 10²⁶b |
| 54in² | 3.483864 × 10²⁶b |
| 55in² | 3.54838 × 10²⁶b |
| 56in² | 3.612896 × 10²⁶b |
| 57in² | 3.677412 × 10²⁶b |
| 58in² | 3.741928 × 10²⁶b |
| 59in² | 3.806444 × 10²⁶b |
| 60in² | 3.87096 × 10²⁶b |
| 61in² | 3.935476 × 10²⁶b |
| 62in² | 3.999992 × 10²⁶b |
| 63in² | 4.064508 × 10²⁶b |
| 64in² | 4.129024 × 10²⁶b |
| 65in² | 4.19354 × 10²⁶b |
| 66in² | 4.258056 × 10²⁶b |
| 67in² | 4.322572 × 10²⁶b |
| 68in² | 4.387088 × 10²⁶b |
| 69in² | 4.451604 × 10²⁶b |
| 70in² | 4.51612 × 10²⁶b |
| 71in² | 4.580636 × 10²⁶b |
| 72in² | 4.645152 × 10²⁶b |
| 73in² | 4.709668 × 10²⁶b |
| 74in² | 4.774184 × 10²⁶b |
| 75in² | 4.8387 × 10²⁶b |
| 76in² | 4.903216 × 10²⁶b |
| 77in² | 4.967732 × 10²⁶b |
| 78in² | 5.032248 × 10²⁶b |
| 79in² | 5.096764 × 10²⁶b |
| 80in² | 5.16128 × 10²⁶b |
| 81in² | 5.225796 × 10²⁶b |
| 82in² | 5.290312 × 10²⁶b |
| 83in² | 5.354828 × 10²⁶b |
| 84in² | 5.419344 × 10²⁶b |
| 85in² | 5.48386 × 10²⁶b |
| 86in² | 5.548376 × 10²⁶b |
| 87in² | 5.612892 × 10²⁶b |
| 88in² | 5.677408 × 10²⁶b |
| 89in² | 5.741924 × 10²⁶b |
| 90in² | 5.80644 × 10²⁶b |
| 91in² | 5.870956 × 10²⁶b |
| 92in² | 5.935472 × 10²⁶b |
| 93in² | 5.999988 × 10²⁶b |
| 94in² | 6.064504 × 10²⁶b |
| 95in² | 6.12902 × 10²⁶b |
| 96in² | 6.193536 × 10²⁶b |
| 97in² | 6.258052 × 10²⁶b |
| 98in² | 6.322568 × 10²⁶b |
| 99in² | 6.387084 × 10²⁶b |
The square inch is a unit of area and is an imperial unit with the symbol in².
One square inch is equal in area to a square with edges one inch in length.
The square inch is a common unit of measurement in the UK and US.
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.