therm | 1 thm | 2 thm | 3 thm | 4 thm | 5 thm | 6 thm | 7 thm | 8 thm | 9 thm | 10 thm | 11 thm | 12 thm | 13 thm | 14 thm | 15 thm | 16 thm | 17 thm | 18 thm | 19 thm | 20 thm | 21 thm | 22 thm | 23 thm | 24 thm | 25 thm | 26 thm | 27 thm | 28 thm | 29 thm | 30 thm | 31 thm | 32 thm | 33 thm | 34 thm | 35 thm | 36 thm | 37 thm | 38 thm | 39 thm | 40 thm | 41 thm | 42 thm | 43 thm | 44 thm | 45 thm | 46 thm | 47 thm | 48 thm | 49 thm | 50 thm | 51 thm | 52 thm | 53 thm | 54 thm | 55 thm | 56 thm | 57 thm | 58 thm | 59 thm | 60 thm | 61 thm | 62 thm | 63 thm | 64 thm | 65 thm | 66 thm | 67 thm | 68 thm | 69 thm | 70 thm | 71 thm | 72 thm | 73 thm | 74 thm | 75 thm | 76 thm | 77 thm | 78 thm | 79 thm | 80 thm | 81 thm | 82 thm | 83 thm | 84 thm | 85 thm | 86 thm | 87 thm | 88 thm | 89 thm | 90 thm | 91 thm | 92 thm | 93 thm | 94 thm | 95 thm | 96 thm | 97 thm | 98 thm | 99 thm | 100 thm |
horsepower-hour | 39.2920962 hp·h | 78.5841925 hp·h | 117.8762887 hp·h | 157.1683849 hp·h | 196.4604811 hp·h | 235.7525774 hp·h | 275.0446736 hp·h | 314.3367698 hp·h | 353.6288660 hp·h | 392.9209623 hp·h | 432.2130585 hp·h | 471.5051547 hp·h | 510.7972510 hp·h | 550.0893472 hp·h | 589.3814434 hp·h | 628.6735396 hp·h | 667.9656359 hp·h | 707.2577321 hp·h | 746.5498283 hp·h | 785.8419246 hp·h | 825.1340208 hp·h | 864.4261170 hp·h | 903.7182132 hp·h | 943.0103095 hp·h | 982.3024057 hp·h | 1,021.5945019 hp·h | 1,060.8865981 hp·h | 1,100.1786944 hp·h | 1,139.4707906 hp·h | 1,178.7628868 hp·h | 1,218.0549831 hp·h | 1,257.3470793 hp·h | 1,296.6391755 hp·h | 1,335.9312717 hp·h | 1,375.2233680 hp·h | 1,414.5154642 hp·h | 1,453.8075604 hp·h | 1,493.0996566 hp·h | 1,532.3917529 hp·h | 1,571.6838491 hp·h | 1,610.9759453 hp·h | 1,650.2680416 hp·h | 1,689.5601378 hp·h | 1,728.8522340 hp·h | 1,768.1443302 hp·h | 1,807.4364265 hp·h | 1,846.7285227 hp·h | 1,886.0206189 hp·h | 1,925.3127152 hp·h | 1,964.6048114 hp·h | 2,003.8969076 hp·h | 2,043.1890038 hp·h | 2,082.4811001 hp·h | 2,121.7731963 hp·h | 2,161.0652925 hp·h | 2,200.3573887 hp·h | 2,239.6494850 hp·h | 2,278.9415812 hp·h | 2,318.2336774 hp·h | 2,357.5257737 hp·h | 2,396.8178699 hp·h | 2,436.1099661 hp·h | 2,475.4020623 hp·h | 2,514.6941586 hp·h | 2,553.9862548 hp·h | 2,593.2783510 hp·h | 2,632.5704472 hp·h | 2,671.8625435 hp·h | 2,711.1546397 hp·h | 2,750.4467359 hp·h | 2,789.7388322 hp·h | 2,829.0309284 hp·h | 2,868.3230246 hp·h | 2,907.6151208 hp·h | 2,946.9072171 hp·h | 2,986.1993133 hp·h | 3,025.4914095 hp·h | 3,064.7835058 hp·h | 3,104.0756020 hp·h | 3,143.3676982 hp·h | 3,182.6597944 hp·h | 3,221.9518907 hp·h | 3,261.2439869 hp·h | 3,300.5360831 hp·h | 3,339.8281793 hp·h | 3,379.1202756 hp·h | 3,418.4123718 hp·h | 3,457.7044680 hp·h | 3,496.9965643 hp·h | 3,536.2886605 hp·h | 3,575.5807567 hp·h | 3,614.8728529 hp·h | 3,654.1649492 hp·h | 3,693.4570454 hp·h | 3,732.7491416 hp·h | 3,772.0412378 hp·h | 3,811.3333341 hp·h | 3,850.6254303 hp·h | 3,889.9175265 hp·h | 3,929.2096228 hp·h |
The therm (symbol thm) is a non-SI unit of heat energy equal to 100,000 British thermal units (BTU). It is approximately the energy equivalent of burning 100 cubic feet (2.83 cubic metres) – often referred to as 1 CCF – of natural gas.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
therm | thm | ≡ 100000 BTU59 °F | = 105.4804×106 J | Imperial/US |
therms | horsepower-hours | therms | horsepower-hours |
---|---|---|---|
1 | = 39.292096227591 | 6 | = 235.75257736555 |
2 | = 78.584192455182 | 7 | = 275.04467359314 |
3 | = 117.87628868277 | 8 | = 314.33676982073 |
4 | = 157.16838491036 | 9 | = 353.62886604832 |
5 | = 196.46048113796 | 10 | = 392.92096227591 |
A horsepower-hour (hph) is an outdated unit of energy, not used in the SI system of units. The unit represents an amount of work a horse is supposed capable of delivering during an hour (1 (one) horsepower integrated over a time interval of an hour). Based on differences in the definition of what constitutes the 'power of a horse', a horsepower-hour differs slightly from the German "Pferdestärkenstunde" (PSh):
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
horsepower-hour | hp·h | ≡ 1 hp × 1 h | = 2.684519537696172792×106 J | Metric system Non-SI |
horsepower-hours | therms | horsepower-hours | therms |
---|---|---|---|
1 | = 0.025450411049787 | 6 | = 0.15270246629872 |
2 | = 0.050900822099575 | 7 | = 0.17815287734851 |
3 | = 0.076351233149362 | 8 | = 0.2036032883983 |
4 | = 0.10180164419915 | 9 | = 0.22905369944809 |
5 | = 0.12725205524894 | 10 | = 0.25450411049787 |
therms | horsepower-hours |
---|---|
1 | = 39.2920962 |
0.0254504 | = 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 …) |