| 0ft² | 0b |
| 1ft² | 9.290304 × 10²⁶b |
| 2ft² | 1.858061 × 10²⁷b |
| 3ft² | 2.787091 × 10²⁷b |
| 4ft² | 3.716122 × 10²⁷b |
| 5ft² | 4.645152 × 10²⁷b |
| 6ft² | 5.574182 × 10²⁷b |
| 7ft² | 6.503213 × 10²⁷b |
| 8ft² | 7.432243 × 10²⁷b |
| 9ft² | 8.361274 × 10²⁷b |
| 10ft² | 9.290304 × 10²⁷b |
| 11ft² | 1.021933 × 10²⁸b |
| 12ft² | 1.114836 × 10²⁸b |
| 13ft² | 1.20774 × 10²⁸b |
| 14ft² | 1.300643 × 10²⁸b |
| 15ft² | 1.393546 × 10²⁸b |
| 16ft² | 1.486449 × 10²⁸b |
| 17ft² | 1.579352 × 10²⁸b |
| 18ft² | 1.672255 × 10²⁸b |
| 19ft² | 1.765158 × 10²⁸b |
| 20ft² | 1.858061 × 10²⁸b |
| 21ft² | 1.950964 × 10²⁸b |
| 22ft² | 2.043867 × 10²⁸b |
| 23ft² | 2.13677 × 10²⁸b |
| 24ft² | 2.229673 × 10²⁸b |
| 25ft² | 2.322576 × 10²⁸b |
| 26ft² | 2.415479 × 10²⁸b |
| 27ft² | 2.508382 × 10²⁸b |
| 28ft² | 2.601285 × 10²⁸b |
| 29ft² | 2.694188 × 10²⁸b |
| 30ft² | 2.787091 × 10²⁸b |
| 31ft² | 2.879994 × 10²⁸b |
| 32ft² | 2.972897 × 10²⁸b |
| 33ft² | 3.0658 × 10²⁸b |
| 34ft² | 3.158703 × 10²⁸b |
| 35ft² | 3.251606 × 10²⁸b |
| 36ft² | 3.344509 × 10²⁸b |
| 37ft² | 3.437412 × 10²⁸b |
| 38ft² | 3.530316 × 10²⁸b |
| 39ft² | 3.623219 × 10²⁸b |
| 40ft² | 3.716122 × 10²⁸b |
| 41ft² | 3.809025 × 10²⁸b |
| 42ft² | 3.901928 × 10²⁸b |
| 43ft² | 3.994831 × 10²⁸b |
| 44ft² | 4.087734 × 10²⁸b |
| 45ft² | 4.180637 × 10²⁸b |
| 46ft² | 4.27354 × 10²⁸b |
| 47ft² | 4.366443 × 10²⁸b |
| 48ft² | 4.459346 × 10²⁸b |
| 49ft² | 4.552249 × 10²⁸b |
| 50ft² | 4.645152 × 10²⁸b |
| 51ft² | 4.738055 × 10²⁸b |
| 52ft² | 4.830958 × 10²⁸b |
| 53ft² | 4.923861 × 10²⁸b |
| 54ft² | 5.016764 × 10²⁸b |
| 55ft² | 5.109667 × 10²⁸b |
| 56ft² | 5.20257 × 10²⁸b |
| 57ft² | 5.295473 × 10²⁸b |
| 58ft² | 5.388376 × 10²⁸b |
| 59ft² | 5.481279 × 10²⁸b |
| 60ft² | 5.574182 × 10²⁸b |
| 61ft² | 5.667085 × 10²⁸b |
| 62ft² | 5.759988 × 10²⁸b |
| 63ft² | 5.852892 × 10²⁸b |
| 64ft² | 5.945795 × 10²⁸b |
| 65ft² | 6.038698 × 10²⁸b |
| 66ft² | 6.131601 × 10²⁸b |
| 67ft² | 6.224504 × 10²⁸b |
| 68ft² | 6.317407 × 10²⁸b |
| 69ft² | 6.41031 × 10²⁸b |
| 70ft² | 6.503213 × 10²⁸b |
| 71ft² | 6.596116 × 10²⁸b |
| 72ft² | 6.689019 × 10²⁸b |
| 73ft² | 6.781922 × 10²⁸b |
| 74ft² | 6.874825 × 10²⁸b |
| 75ft² | 6.967728 × 10²⁸b |
| 76ft² | 7.060631 × 10²⁸b |
| 77ft² | 7.153534 × 10²⁸b |
| 78ft² | 7.246437 × 10²⁸b |
| 79ft² | 7.33934 × 10²⁸b |
| 80ft² | 7.432243 × 10²⁸b |
| 81ft² | 7.525146 × 10²⁸b |
| 82ft² | 7.618049 × 10²⁸b |
| 83ft² | 7.710952 × 10²⁸b |
| 84ft² | 7.803855 × 10²⁸b |
| 85ft² | 7.896758 × 10²⁸b |
| 86ft² | 7.989661 × 10²⁸b |
| 87ft² | 8.082564 × 10²⁸b |
| 88ft² | 8.175468 × 10²⁸b |
| 89ft² | 8.268371 × 10²⁸b |
| 90ft² | 8.361274 × 10²⁸b |
| 91ft² | 8.454177 × 10²⁸b |
| 92ft² | 8.54708 × 10²⁸b |
| 93ft² | 8.639983 × 10²⁸b |
| 94ft² | 8.732886 × 10²⁸b |
| 95ft² | 8.825789 × 10²⁸b |
| 96ft² | 8.918692 × 10²⁸b |
| 97ft² | 9.011595 × 10²⁸b |
| 98ft² | 9.104498 × 10²⁸b |
| 99ft² | 9.197401 × 10²⁸b |
The square foot is a unit of area and is an imperial unit with the symbol ft².
One square foot is equal in area to a square with edges one foot in length.
It is used a lot in expressing the internal size of a house, apartment, office or other properties so is a useful unit to understand.
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.