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Energy and Work Conversion Chart
Energy and Work Conversion Chart
Energy and work conversion chart
Sorted from less to more
| Name Energy, work, or heat of unit, E | Symbol | Definition | Relation to SI unit joule, J |
| joule (SI unit) | J | ≡ N·m = W·s = V·A·s | = kg·m²/s² |
| electronvolt | eV | ≡ e × 1 V | ≈ 1.602 176×10−19J |
| rydberg | Ry | ≡ R∞·h·c | ≈ 2.179 872×10−18 J |
| hartree | Eh | ≡ me·α²·c²(= 2 Ry) | ≈ 4.359 744×10−18 J |
| atomicunit of energy | au | ≡ Eh ≈ 4.359 744×10−18 J | |
| erg (cgs unit) | erg | ≡ 1 g·cm²/s² | = 10−7 J |
| foot-poundal | ft pdl | ≡ 1 lb·ft²/s² | = 4.214 011 009 380 48×10−2 J |
| cubiccentimetre of atmosphere; standard cubic centimetre |
cc atm; scc | ≡ 1 atm × 1 cm³ | = 0.101 325 J |
| inch-poundforce | in lbf | ≡ g × 1 lb × 1 in | = 0.112 984 829 027 616 7 J |
| foot-pound force | ft lbf | ≡ g × 1 lb × 1 ft | = 1.355 817 948 331 400 4 J |
| calorie (20 °C) | cal20 °C | - | ≈ 4.1819 J |
| calorie (thermochemical) | calth | - | ≡ 4.184 J |
| calorie (15 °C) | cal15 °C | - | ≡ 4.1855 J |
| calorie (International Table) | calIT | - | ≡ 4.1868 J |
| calorie (mean) | calmean | - | ≈ 4.190 02 J |
| calorie (3.98 °C) | cal3.98 °C | - | ≈ 4.2045 J |
| litre-atmosphere | l atm; sl | ≡ 1 atm × 1 L | = 101.325 J |
| gallon-atmosphere(U.S.) | US gal atm | ≡ 1 atm × 1 gal (US) | = 383.556 849 013 8 J |
| gallon-atmosphere (Imperial) | US gal atm | ≡ 1 atm × 1 gal (Imp) | = 460.632 569 25 J |
| British thermal unit (thermochemical) | BTUth | ≡ 1lb/g × 1 calth × 1 °F/°C = 9.489 152 380 4 ÷ 9 kJ |
≈ 1.054 350 kJ |
| Britishthermal unit (ISO) | BTUISO | - | ≡ 1.0545 kJ |
| Britishthermal unit (63 °F) | BTU63 °F | - | ≈ 1.0546 kJ |
| Britishthermal unit (60 °F) | BTU60 °F | - | ≈ 1.054 68 kJ |
| Britishthermal unit (59 °F) | BTU59 °F | - | ≡ 1.054 804 kJ |
| Britishthermal unit (International Table) | BTUIT | ≡ 1lb/g × 1 calIT × 1 °F/°C | = 1.055 055 852 62 kJ |
| Britishthermal unit (mean) | BTUmean | - | ≈ 1.055 87 kJ |
| Britishthermal unit (39 °F) | BTU39 °F | - | ≈ 1.059 67 kJ |
| Celsiusheat unit (International Table) | CHUIT | ≡ 1 BTUIT × 1 °C/°F | = 1.899 100 534 716 kJ |
| cubicfoot of atmosphere; standard cubic foot | cu ft atm; scf | ≡ 1 atm × 1 ft³ | = 2.869 204 480 934 4 kJ |
| kilocalorie; large calorie | kcal; Cal | ≡ 1000 calIT | = 4.1868 kJ |
| cubicyard of atmosphere; standard cubic yard | cu yd atm; scy | ≡ 1 atm × 1 yd³ | = 77.468 520 985 228 8 kJ |
| cubicfoot of natural gas | - | ≡ 1000 BTUIT | = 1.055 055 852 62 MJ |
| horsepower-hour | hp·h | ≡ 1 hp × 1 h | = 2.6845 MJ |
| kilowatt-hir;Board of Trade Unit | kW·h; B.O.T.U. | ≡ 1 kW × 1 h | = 3.6 MJ |
| thermie | th | ≡ 1 McalIT | = 4.1868 MJ |
| therm (U.S.) | - | ≡ 100 000 BTU59 °F | = 105.4804 MJ |
| therm (E.C.) | - | ≡ 100 000 BTUIT | = 105.505 585 262 MJ |
| ton of TNT | tTNT | ≡ 1 Gcalth | = 4.184 GJ |
| barrelof oil equivalent | bboe | ≈ 5.8 MBTU59 °F | ≈ 6.12 GJ |
| tonof coal equivalent | TCE | ≡ 7 Gcalth | = 29.3076 GJ |
| tonof oil equivalent | TOE | ≡ 10 Gcalth | = 41.868 GJ |
| quad | - | ≡ 1015 BTUIT | = 1.055 055 852 62 EJ |