Energy changes and transformations make things happen,
- energy is the ultimate agent of change,
- energy is the capacity to produce an effect,
- Energy is the capacity to move or to change or to work (electromagnetic energy,
solar energy,
chemical energy,
kinetic energy,
work and heat,
sound energy.)
The are many anergy unites, hence the below conversion tables.
Power is the speed of energy use, the rate at which work is done.
Power = Work done/Time taken.
Power is the rate at which energy is converted from one form into another. [The dot (.) is used for the decimal fraction (European comma (,))]
The power unit is the watt (W), kilowatt (kW), or British horsepower (BHP), Pferdestärke (PS).
1 kW = 1.35962152 PS (DIN) = 1.34102186 BHP = 1.34048257 BHP (electric);
1 BHP = 0.74570000 kW; 1 BHP (electric) = 0.746 kW; 1 PS (DIN) = 0.73549880 kW.
Energy units and conversions:
Power [= the capacity to do work at a certain speed]
| Unit 1 | = | Unit 2 | Comparative value |
| 1 J/s | = | 1 W | The basic power unit: Watt = Joule per second |
| 1 kW | = | 3597 kJ/h | 100 Watts during 10 hours of human work per day
[ 1kWh = the work one adult can perform each day, if s/he works for ten hours at a speed of 100 Watts, with an energy intake of approx. 3 kWh a day.] |
| 1000 kJ/h | = | 0.278 kW | |
| 1 kW | = | 3412 BTU/h | |
| 1 BHP | = | 745.7 W | |
| 1 DIN PS | = | 0.7355 kW | 75 kgm/s |
| 1000 kJ/h | = | 238.8 kcal/h | |
| 125 kJ/h | = | 860 kcal/8h | The average speed of work of an adult. |
| 125 kJ/h | = | 34.75 Watt | |
| 34.75 W | = | 0.0466 BHP | |
| 1 BHP | = | 21.46 MP | One Horse can work at the same speed as 22 men. |
| 1 MP | = | 1/22 BHP | One Man-Power is approx. one twentieth of a Horsepower |
Energy [= the total work done]
| Unit 1 | = | Unit 2 | Comparative value |
| 1 J | = | 1 Ws | |
| 1000 kJ | = | 238.8 kcal | |
| 1000 kJ | = | 0.278 kWh | |
| 1 kWh | = | 3412 BTU | 1 Wh = 3.412 BTU |
| 1000 kJ | = | 0.278 kWh | |
| 1 kWh | = | 3597 kJ | |
| 1 barrel of crude oil | = | 1714 kWh | the daily work performance of 1714 average adults = 13712 person-hours |
| 1 barrel of crude oil | = | 50 US$ (JAN2009) | 109,696 US$ adult work at 8$/h |
| 1 kcal | = | 4.1868 kJ | |
| 1 kcal | = | 1.1628 Wh | |
| 2500 kcal | = | 2.907 kWh | the daily energy need of an average adult person. |
| 1 kWh | = | 860 kcal | the daily work performance of an average adult person. |
| 1 m3 Erdgas | = | 8.816 kWh | |
| 1 ton of coal equivalent TCE | = | 8140 kWh | |
| 1 ton of oil equivalent TOE | = | 11630 kWh | |
| 1 ton of oil equivalent TOE | = | 1.428 TCE | |
| 1000 BTU | = | 0.2931 kWh | |
| 1 QUAD | = | 1x1015 BTUs
(= 1 quadrillion) | The energy contained in eight billion gallons of gasoline, a year's supply for ten million automobiles. |
| 1 QUAD | = | 293074646 MWh | per year (8760 hours)  33.456 GWyear (3n24) |
| 1 QUAD | = | 1.055 × 1018 joules | |
| 1 QUAD | = | 1.055 exajoules or EJ | |
| 1 barrel | = | 42 gallons | |
| 1 barrel of crude oil | = | 5,848,000 BTU | |
| 1 Therm (heat) | = | 100,000 BTU
(1.054 × 108 J) | |
| 1 barrel of crude oil | = | 5,848,000 BTU | |
| Energiequelle (* η=eta=Wirkungsgrad) |
Standard |
Verbrauchstwert |
| Einheit |
Primarenergie |
η* |
erzeugte Energie |
kWh |
MWh |
η* |
gebrauchte Energie |
| Wasser (Staudamm) |
1 Mio. m3 |
0,9 |
0,9 Mio. m3 |
... |
... |
0,3 |
... Stunden Elektroheizung |
| Wasser - 1 Staudamm |
1 Mio. m3 |
... |
0,9 Mio. m3 |
... |
... |
... |
... Kilometer Autofahrt; ... Stunden Heizen |
| Gas (Erdgas) |
1 Mio. m3 |
... |
... Mio. m3 |
... |
... |
... |
... Stunden Elektroheizung |
| Windmühle klein |
300 kW |
... |
... 3 |
... |
... |
... |
Stunden Beleuchtung |
| Windmühle gross |
5 MW |
... |
... |
... |
... |
0,3 |
... Stunden Elektroheizung |
| Uranium |
... |
... |
... |
... |
... |
... |
... Stunden Heizen |
| Einheit/unit 1 |
= | Einheit/unit 2 |
Vergleichswert/comparison |
| 1000 m3 | Erdgas / Natural gas | = | 8,816 MWh | 1083 kg SKE - 758 kg RÖE |
| 1 tonne | SKE = Steinkohleneinheit | = | 8,14 MWh | 8140 kWh |
| 1 tonne | RÖE = Rohöleinheit | = | 11,63 MWh | 11630 kWh |
| 1000 | MJ = Megajoule (=106 Joule) | = | 0,278 MWh | 278 kWh |
| 1 | GJ = Gigajoule (=109 Joule) | = | 0,278 MWh | 278 kWh |
| 1 | TJ = Terajoule (=1012 Joule) | = | 278 MWh | 278 000 kWh |
| 1 | PJ = Petajoule (=1015 Joule) | = | 278 000 MWh | 278 Mio. kWh |
| 1 | EJ = Exajoule (=1018 Joule) | = | 278 Mio. MWh | 278 Mia. kWh |
| 1 Mio. | BTU = British Thermal Unit | = | 0,2931 MWh | 293,1 kWh |
| Einheit 1 | | Einheit 2 | Vergleichswert |
| 1 J | = | 1 Ws | . |
| 1000 kJ | = | 238,8 kcal | . |
| 1000 kJ | = | 0,2788 kWh | . |
| 1 kWh | = | 3412 BTU | . |
| 1 kcal | = | 4,1868 kJ | . |
| 1 kcal | = | 1,1628 Wh | . |
| 2500 kcal | = | 2,907 kWh | Täglicher Energiebedarf eines normalarbeitenden Erwachsenen. |
| 1 kWh | = | 860 kcal | Tägliche Arbeitsleistung eines durchschnittlichen Erwachsenen. |
| 890'440 Terajoule | = | MWh | Energieverbrauch in der Schweiz in 2005 |
| 1 QUAD | = | 1x1015 BTUs = 1 Million Milliarden | Der Energiebedarf von 10 Millionen Autos (USA) . |
| 1000 BTU | = | 0.2931 kWh | . |
Conversion in the Internet
more conversions
Oregon State conversions
| k | = Kilo | = 103 | = | 1000 | = Tausend |
| M | = Mega | = 106 | = | 1 000 000 | = Million (Mio.) |
| G | = Giga | = 109 | = | 1 000 000 000 | = Milliarde (Mia.) |
| T | = Tera | = 1012 | = | 1 000 000 000 000 | = Billion (Bill.) |
| P | = Peta | = 1015 | = | 1 000 000 000 000 000 | = Billiarde |
| E | = Exa | = 1018 | = | 1 000 000 000 000 000 000 | = Trillion |
| kg | = Kilogramm | = | 1000 g |
| t | = Tonne | = | 1000 kg | = 1 000 000 g |
24 October 2010 under development > click to empower
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