| British thermal unit (International Table) | Watt second |
|---|---|
| 1 BTUIT | 1055.05585262 W⋅s |
| 2 BTUIT | 2110.11170524 W⋅s |
| 3 BTUIT | 3165.16755786 W⋅s |
| 4 BTUIT | 4220.22341048 W⋅s |
| 5 BTUIT | 5275.2792631 W⋅s |
| 6 BTUIT | 6330.33511572 W⋅s |
| 7 BTUIT | 7385.39096834 W⋅s |
| 8 BTUIT | 8440.44682096 W⋅s |
| 9 BTUIT | 9495.50267358 W⋅s |
| 10 BTUIT | 10550.5585262 W⋅s |
| British thermal unit (International Table) | Watt second |
|---|---|
| 15 BTUIT | 15825.8377893 W⋅s |
| 20 BTUIT | 21101.1170524 W⋅s |
| 30 BTUIT | 31651.6755786 W⋅s |
| 40 BTUIT | 42202.2341048 W⋅s |
| 50 BTUIT | 52752.792631 W⋅s |
| 60 BTUIT | 63303.3511572 W⋅s |
| 70 BTUIT | 73853.9096834 W⋅s |
| 80 BTUIT | 84404.4682096 W⋅s |
| 90 BTUIT | 94955.0267358 W⋅s |
| 100 BTUIT | 105505.585262 W⋅s |
| British thermal unit (International Table) | Watt second |
|---|---|
| 500 BTUIT | 527527.92631 W⋅s |
| 1000 BTUIT | 1055055.85262 W⋅s |
| 1500 BTUIT | 1582583.77893 W⋅s |
| 10000 BTUIT | 10550558.5262 W⋅s |
| 50000 BTUIT | 52752792.631 W⋅s |
| 100000 BTUIT | 105505585.262 W⋅s |
| 500000 BTUIT | 527527926.31 W⋅s |
| 1000000 BTUIT | 1055055852.62 W⋅s |
| 5000000 BTUIT | 5275279263.1 W⋅s |
| 10000000 BTUIT | 10550558526.2 W⋅s |