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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 Attojoules (table conversion) |
|---|---|
| 1 BTUiso | = 1.055056E+21 aJ |
| 2 BTUiso | = 2.110112E+21 aJ |
| 3 BTUiso | = 3.165168E+21 aJ |
| 4 BTUiso | = 4.220224E+21 aJ |
| 5 BTUiso | = 5.27528E+21 aJ |
| 6 BTUiso | = 6.330336E+21 aJ |
| 7 BTUiso | = 7.385392E+21 aJ |
| 8 BTUiso | = 8.440448E+21 aJ |
| 9 BTUiso | = 9.495504E+21 aJ |
| 10 BTUiso | = 1.055056E+22 aJ |
| 20 BTUiso | = 2.110112E+22 aJ |
| 30 BTUiso | = 3.165168E+22 aJ |
| 40 BTUiso | = 4.220224E+22 aJ |
| 50 BTUiso | = 5.27528E+22 aJ |
| 60 BTUiso | = 6.330336E+22 aJ |
| 70 BTUiso | = 7.385392E+22 aJ |
| 80 BTUiso | = 8.440448E+22 aJ |
| 90 BTUiso | = 9.495504E+22 aJ |
| 100 BTUiso | = 1.055056E+23 aJ |
| 200 BTUiso | = 2.110112E+23 aJ |
| 300 BTUiso | = 3.165168E+23 aJ |
| 400 BTUiso | = 4.220224E+23 aJ |
| 500 BTUiso | = 5.27528E+23 aJ |
| 600 BTUiso | = 6.330336E+23 aJ |
| 700 BTUiso | = 7.385392E+23 aJ |
| 800 BTUiso | = 8.440448E+23 aJ |
| 900 BTUiso | = 9.495504E+23 aJ |
| 1000 BTUiso | = 1.055056E+24 aJ |
| 2000 BTUiso | = 2.110112E+24 aJ |
| 4000 BTUiso | = 4.220224E+24 aJ |
| 5000 BTUiso | = 5.27528E+24 aJ |
| 7500 BTUiso | = 7.91292E+24 aJ |
| 10000 BTUiso | = 1.055056E+25 aJ |
| 25000 BTUiso | = 2.63764E+25 aJ |
| 50000 BTUiso | = 5.27528E+25 aJ |
| 100000 BTUiso | = 1.055056E+26 aJ |
| 1000000 BTUiso | = 1.055056E+27 aJ |
| 1000000000 BTUiso | = 1.055056E+30 aJ |