| british thermal unit | 1 BTUIT | 2 BTUIT | 3 BTUIT | 4 BTUIT | 5 BTUIT | 6 BTUIT | 7 BTUIT | 8 BTUIT | 9 BTUIT | 10 BTUIT | 11 BTUIT | 12 BTUIT | 13 BTUIT | 14 BTUIT | 15 BTUIT | 16 BTUIT | 17 BTUIT | 18 BTUIT | 19 BTUIT | 20 BTUIT | 21 BTUIT | 22 BTUIT | 23 BTUIT | 24 BTUIT | 25 BTUIT | 26 BTUIT | 27 BTUIT | 28 BTUIT | 29 BTUIT | 30 BTUIT | 31 BTUIT | 32 BTUIT | 33 BTUIT | 34 BTUIT | 35 BTUIT | 36 BTUIT | 37 BTUIT | 38 BTUIT | 39 BTUIT | 40 BTUIT | 41 BTUIT | 42 BTUIT | 43 BTUIT | 44 BTUIT | 45 BTUIT | 46 BTUIT | 47 BTUIT | 48 BTUIT | 49 BTUIT | 50 BTUIT | 51 BTUIT | 52 BTUIT | 53 BTUIT | 54 BTUIT | 55 BTUIT | 56 BTUIT | 57 BTUIT | 58 BTUIT | 59 BTUIT | 60 BTUIT | 61 BTUIT | 62 BTUIT | 63 BTUIT | 64 BTUIT | 65 BTUIT | 66 BTUIT | 67 BTUIT | 68 BTUIT | 69 BTUIT | 70 BTUIT | 71 BTUIT | 72 BTUIT | 73 BTUIT | 74 BTUIT | 75 BTUIT | 76 BTUIT | 77 BTUIT | 78 BTUIT | 79 BTUIT | 80 BTUIT | 81 BTUIT | 82 BTUIT | 83 BTUIT | 84 BTUIT | 85 BTUIT | 86 BTUIT | 87 BTUIT | 88 BTUIT | 89 BTUIT | 90 BTUIT | 91 BTUIT | 92 BTUIT | 93 BTUIT | 94 BTUIT | 95 BTUIT | 96 BTUIT | 97 BTUIT | 98 BTUIT | 99 BTUIT | 100 BTUIT |
| kilocalorie | 0.2521644 kcal | 0.5043288 kcal | 0.7564932 kcal | 1.0086576 kcal | 1.2608220 kcal | 1.5129864 kcal | 1.7651508 kcal | 2.0173152 kcal | 2.2694796 kcal | 2.5216440 kcal | 2.7738084 kcal | 3.0259728 kcal | 3.2781372 kcal | 3.5303016 kcal | 3.7824660 kcal | 4.0346304 kcal | 4.2867948 kcal | 4.5389592 kcal | 4.7911236 kcal | 5.0432880 kcal | 5.2954524 kcal | 5.5476168 kcal | 5.7997812 kcal | 6.0519456 kcal | 6.3041100 kcal | 6.5562744 kcal | 6.8084388 kcal | 7.0606032 kcal | 7.3127676 kcal | 7.5649320 kcal | 7.8170964 kcal | 8.0692608 kcal | 8.3214252 kcal | 8.5735896 kcal | 8.8257540 kcal | 9.0779184 kcal | 9.3300828 kcal | 9.5822472 kcal | 9.8344116 kcal | 10.0865760 kcal | 10.3387404 kcal | 10.5909048 kcal | 10.8430692 kcal | 11.0952336 kcal | 11.3473980 kcal | 11.5995624 kcal | 11.8517268 kcal | 12.1038912 kcal | 12.3560556 kcal | 12.6082200 kcal | 12.8603844 kcal | 13.1125488 kcal | 13.3647132 kcal | 13.6168776 kcal | 13.8690420 kcal | 14.1212064 kcal | 14.3733708 kcal | 14.6255352 kcal | 14.8776996 kcal | 15.1298640 kcal | 15.3820284 kcal | 15.6341928 kcal | 15.8863572 kcal | 16.1385216 kcal | 16.3906860 kcal | 16.6428504 kcal | 16.8950148 kcal | 17.1471792 kcal | 17.3993436 kcal | 17.6515081 kcal | 17.9036725 kcal | 18.1558369 kcal | 18.4080013 kcal | 18.6601657 kcal | 18.9123301 kcal | 19.1644945 kcal | 19.4166589 kcal | 19.6688233 kcal | 19.9209877 kcal | 20.1731521 kcal | 20.4253165 kcal | 20.6774809 kcal | 20.9296453 kcal | 21.1818097 kcal | 21.4339741 kcal | 21.6861385 kcal | 21.9383029 kcal | 22.1904673 kcal | 22.4426317 kcal | 22.6947961 kcal | 22.9469605 kcal | 23.1991249 kcal | 23.4512893 kcal | 23.7034537 kcal | 23.9556181 kcal | 24.2077825 kcal | 24.4599469 kcal | 24.7121113 kcal | 24.9642757 kcal | 25.2164401 kcal |
The British thermal unit (Btu or BTU) is a traditional unit of heat; it is defined as the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit. It is part of the United States customary units.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| british thermal unit | BTUIT | = 1.05505585262×103 J | = 1.05505585262×103 J | Imperial/US |
| british thermal units | kilocalories | british thermal units | kilocalories |
|---|---|---|---|
| 1 | = 0.2521644007218 | 6 | = 1.5129864043308 |
| 2 | = 0.50432880144359 | 7 | = 1.7651508050526 |
| 3 | = 0.75649320216539 | 8 | = 2.0173152057744 |
| 4 | = 1.0086576028872 | 9 | = 2.2694796064962 |
| 5 | = 1.260822003609 | 10 | = 2.521644007218 |
The kilocalorie is the unit of energy.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| kilocalorie | kcal | ≡ 1000 calIT | = 4184 J | Metric system SI |
| kilocalories | british thermal units | kilocalories | british thermal units |
|---|---|---|---|
| 1 | = 3.9656668313909 | 6 | = 23.794000988346 |
| 2 | = 7.9313336627818 | 7 | = 27.759667819736 |
| 3 | = 11.897000494173 | 8 | = 31.725334651127 |
| 4 | = 15.862667325564 | 9 | = 35.691001482518 |
| 5 | = 19.828334156955 | 10 | = 39.656668313909 |
| british thermal units | kilocalories |
|---|---|
| 1 | = 0.2521644 |
| 3.9656668 | = 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 …) |