Kilowatt-Hour (kW·h)
A kilowatt-hour is the energy delivered by one kilowatt of power running for one hour — exactly 3.6 megajoules.
Kilowatt-hours bill household electricity, size battery storage, and rate solar panel output.
Kilowatt-Hour to Joule
Convert kilowatt-hour to joule instantly. Type in either field — results update live.
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Energy Kilowatt-Hour Joule
1 kilowatt-hour = 3,600,000 joules
Unit
Unit
Conversion table
Selected kW·h values converted to J using the exact factor from this tool.
| kW·h | J |
|---|---|
| 0.01 | 36,000 |
| 0.1 | 360,000 |
| 1 | 3,600,000 |
| 2 | 7,200,000 |
| 3 | 10,800,000 |
| 5 | 18,000,000 |
| 10 | 36,000,000 |
| 20 | 72,000,000 |
| 50 | 180,000,000 |
| 100 | 360,000,000 |
| 1,000 | 3,600,000,000 |
How to convert
Exact conversion factors in both directions, plus a worked example.
1 kW·h = 3600000 J
1 J = 2.777777778e-7 kW·h
To convert kilowatt-hour to joule, multiply by 3600000.
To convert joule to kilowatt-hour, multiply by 2.777777778e-7.
Example: convert 10 kW·h to J
10 × 3600000 = 36000000 J
About these units
Short background on the units used in this conversion.
Joule (J)
The joule is the SI unit of energy — the work done when one newton moves an object one meter.
Joules quantify electricity bills (as kWh), food energy (as kcal), and scientific energy transfers.
Frequently asked questions
How many joules are in one kilowatt-hour?
One kilowatt-hour equals 3,600,000 joules. Multiply your kilowatt-hours value by 3,600,000 to convert to joules.
What is the conversion formula?
J = kW·h × 3,600,000The reverse is
kW·h = J × 2.777778e-7, using the same exact factors as this converter.Is this Kilowatt-Hour to Joule converter private?
Yes. All calculations run locally in your browser. Nothing you type is sent to a server.
All kilowatt-hour conversions
Jump to any energy conversion starting from kilowatt-hour — including the reverse direction and every other unit in our dataset.
joule (J) → kilowatt-hour (kW·h)
kilowatt-hour (kW·h) → kilojoule (kJ)kilowatt-hour (kW·h) → megajoule (MJ)kilowatt-hour (kW·h) → gigajoule (GJ)kilowatt-hour (kW·h) → watt-hour (W·h)kilowatt-hour (kW·h) → calorie (nutritional / food calorie) (Cal)kilowatt-hour (kW·h) → kilocalorie (it) (kcal (IT))kilowatt-hour (kW·h) → kilocalorie (thermochemical) (kcal (th))kilowatt-hour (kW·h) → calorie (it) (cal (IT))kilowatt-hour (kW·h) → calorie (thermochemical) (cal (th))kilowatt-hour (kW·h) → british thermal unit (it) (Btu (IT))kilowatt-hour (kW·h) → british thermal unit (thermochemical) (Btu (th))kilowatt-hour (kW·h) → foot-pound (ft·lbf)kilowatt-hour (kW·h) → newton meter (N·m)kilowatt-hour (kW·h) → horsepower hour (mechanical) (hp·h)kilowatt-hour (kW·h) → horsepower (metric) hour (metric hp·h)kilowatt-hour (kW·h) → millijoule (mJ)kilowatt-hour (kW·h) → microjoule (µJ)kilowatt-hour (kW·h) → nanojoule (nJ)kilowatt-hour (kW·h) → attojoule (aJ)kilowatt-hour (kW·h) → megaelectron-volt (MeV)kilowatt-hour (kW·h) → kiloelectron-volt (keV)kilowatt-hour (kW·h) → electron-volt (eV)kilowatt-hour (kW·h) → ergkilowatt-hour (kW·h) → gigawatt-hour (GW·h)kilowatt-hour (kW·h) → megawatt-hour (MW·h)kilowatt-hour (kW·h) → kilowatt-second (kW·s)kilowatt-hour (kW·h) → watt-second (W·s)kilowatt-hour (kW·h) → mega british thermal unit (it) (MBtu (IT))kilowatt-hour (kW·h) → ton-hour (refrigeration) (ton·h)kilowatt-hour (kW·h) → fuel oil equivalent @ kiloliter (kL oil eq)kilowatt-hour (kW·h) → fuel oil equivalent @ barrel (us) (bbl oil eq)kilowatt-hour (kW·h) → gigaton (tnt) (Gton)kilowatt-hour (kW·h) → megaton (tnt) (Mton)kilowatt-hour (kW·h) → kiloton (tnt) (kton)kilowatt-hour (kW·h) → ton (explosives / tnt) (ton TNT)kilowatt-hour (kW·h) → dyne centimeter (dyn·cm)kilowatt-hour (kW·h) → gram-force meter (gf·m)kilowatt-hour (kW·h) → gram-force centimeter (gf·cm)kilowatt-hour (kW·h) → kilogram-force centimeter (kgf·cm)kilowatt-hour (kW·h) → kilogram-force meter (kgf·m)kilowatt-hour (kW·h) → kilopond meter (kp·m)kilowatt-hour (kW·h) → pound-force foot (lbf·ft)kilowatt-hour (kW·h) → pound-force inch (lbf·in)kilowatt-hour (kW·h) → ounce-force inch (ozf·in)kilowatt-hour (kW·h) → inch-pound (in·lbf)kilowatt-hour (kW·h) → inch-ounce (in·ozf)kilowatt-hour (kW·h) → poundal foot (pdl·ft)kilowatt-hour (kW·h) → thermkilowatt-hour (kW·h) → therm (ec)kilowatt-hour (kW·h) → therm (us)kilowatt-hour (kW·h) → hartree energy (Eh)kilowatt-hour (kW·h) → rydberg constant (Ry)