| British thermal unit (mean) | Watt second |
|---|---|
| 1 BTUmean | 1055.87 W⋅s |
| 2 BTUmean | 2111.74 W⋅s |
| 3 BTUmean | 3167.61 W⋅s |
| 4 BTUmean | 4223.48 W⋅s |
| 5 BTUmean | 5279.35 W⋅s |
| 6 BTUmean | 6335.22 W⋅s |
| 7 BTUmean | 7391.09 W⋅s |
| 8 BTUmean | 8446.96 W⋅s |
| 9 BTUmean | 9502.83 W⋅s |
| 10 BTUmean | 10558.7 W⋅s |
| British thermal unit (mean) | Watt second |
|---|---|
| 15 BTUmean | 15838.05 W⋅s |
| 20 BTUmean | 21117.4 W⋅s |
| 30 BTUmean | 31676.1 W⋅s |
| 40 BTUmean | 42234.8 W⋅s |
| 50 BTUmean | 52793.5 W⋅s |
| 60 BTUmean | 63352.2 W⋅s |
| 70 BTUmean | 73910.9 W⋅s |
| 80 BTUmean | 84469.6 W⋅s |
| 90 BTUmean | 95028.3 W⋅s |
| 100 BTUmean | 105587 W⋅s |
| British thermal unit (mean) | Watt second |
|---|---|
| 500 BTUmean | 527935 W⋅s |
| 1000 BTUmean | 1055870 W⋅s |
| 1500 BTUmean | 1583805 W⋅s |
| 10000 BTUmean | 10558700 W⋅s |
| 50000 BTUmean | 52793500 W⋅s |
| 100000 BTUmean | 105587000 W⋅s |
| 500000 BTUmean | 527935000 W⋅s |
| 1000000 BTUmean | 1055870000 W⋅s |
| 5000000 BTUmean | 5279350000 W⋅s |
| 10000000 BTUmean | 10558700000 W⋅s |