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| 1 British Thermal Unit ISO | to common energy units |
|---|---|
| 1 BTUiso | = 1055.056 joules (J) |
| 1 BTUiso | = 1.055056 kilojoules (kJ) |
| 1 BTUiso | = 252.16443594646 calories (cal) |
| 1 BTUiso | = 0.25216443594646 kilocalories (kcal) |
| 1 BTUiso | = 6.5851277634223E+21 electron volt (eV) |
| 1 BTUiso | = 0.29307111111111 watt hour (Wh) |
| 1 BTUiso | = 2.4199953024765E+20 atomic unit of energy (au) |
| 1 BTUiso | = 2.5216443594646E-7 tons of TNT (tTNT) |
| 1 BTUiso | = 778.16937096787 foot pound force (ft lbf) |
| 1 BTUiso | = 10550560000 ergs (ergs) |
| British Thermal Unit ISO | to Calories (table conversion) |
|---|---|
| 1 BTUiso | = 252.16443594646 cal |
| 2 BTUiso | = 504.32887189293 cal |
| 3 BTUiso | = 756.49330783939 cal |
| 4 BTUiso | = 1008.6577437859 cal |
| 5 BTUiso | = 1260.8221797323 cal |
| 6 BTUiso | = 1512.9866156788 cal |
| 7 BTUiso | = 1765.1510516252 cal |
| 8 BTUiso | = 2017.3154875717 cal |
| 9 BTUiso | = 2269.4799235182 cal |
| 10 BTUiso | = 2521.6443594646 cal |
| 20 BTUiso | = 5043.2887189293 cal |
| 30 BTUiso | = 7564.9330783939 cal |
| 40 BTUiso | = 10086.577437859 cal |
| 50 BTUiso | = 12608.221797323 cal |
| 60 BTUiso | = 15129.866156788 cal |
| 70 BTUiso | = 17651.510516252 cal |
| 80 BTUiso | = 20173.154875717 cal |
| 90 BTUiso | = 22694.799235182 cal |
| 100 BTUiso | = 25216.443594646 cal |
| 200 BTUiso | = 50432.887189293 cal |
| 300 BTUiso | = 75649.330783939 cal |
| 400 BTUiso | = 100865.77437859 cal |
| 500 BTUiso | = 126082.21797323 cal |
| 600 BTUiso | = 151298.66156788 cal |
| 700 BTUiso | = 176515.10516252 cal |
| 800 BTUiso | = 201731.54875717 cal |
| 900 BTUiso | = 226947.99235182 cal |
| 1000 BTUiso | = 252164.43594646 cal |
| 2000 BTUiso | = 504328.87189293 cal |
| 4000 BTUiso | = 1008657.7437859 cal |
| 5000 BTUiso | = 1260822.1797323 cal |
| 7500 BTUiso | = 1891233.2695985 cal |
| 10000 BTUiso | = 2521644.3594646 cal |
| 25000 BTUiso | = 6304110.8986616 cal |
| 50000 BTUiso | = 12608221.797323 cal |
| 100000 BTUiso | = 25216443.594646 cal |
| 1000000 BTUiso | = 252164435.94646 cal |
| 1000000000 BTUiso | = 252164435946.46 cal |