25 kWh to Wh — 25 kilowatt-hours in watt-hours
Exact 25 × 1,000 = 25,000
25 kilowatt-hours in other units
| Joules | 90,000,000 | J |
|---|---|---|
| Kilojoules | 90,000 | kJ |
| Megajoules | 90 | MJ |
| Watt-hours | 25,000 | Wh |
| Calories | 21,510,516.25 | cal |
| Kilocalories | 21,510.52 | kcal |
| British thermal units | 85,303.54 | BTU |
| Therms | 0.85303541 | thm |
| Foot-pounds | 66,380,593.43 | ft·lbf |
| Electronvolts | 561,735,816,701,468,637,829,005,312 | eV |
kWh to Wh at a glance
| Kilowatt-hours | Watt-hours |
|---|---|
| 1 kWh | 1,000 Wh |
| 2 kWh | 2,000 Wh |
| 3 kWh | 3,000 Wh |
| 5 kWh | 5,000 Wh |
| 10 kWh | 10,000 Wh |
| 20 kWh | 20,000 Wh |
| 25 kWh | 25,000 Wh |
| 50 kWh | 50,000 Wh |
| 100 kWh | 100,000 Wh |
| 250 kWh | 250,000 Wh |
| 500 kWh | 500,000 Wh |
| 1,000 kWh | 1,000,000 Wh |
How to convert kilowatt-hours to watt-hours
Multiply by 1,000 — one kilowatt-hour is 1,000 watt-hours. That factor is exact: it comes from the definition of the units rather than from a measurement, so it will not change and does not need rounding.
Working 25 × 1,000 = 25,000
In words: twenty-five thousand watt-hours.
What these units are
The kilowatt-hour and the watt-hour are covered in the energy unit guide, along with every other unit on this page.
Questions
How many watt-hours are in a kilowatt-hour?
One kilowatt-hour is 1,000 watt-hours. This figure is exact — it comes from the definition of the unit, not a measurement.
What is 25 kilowatt-hours in watt-hours?
25 kilowatt-hours is 25,000 watt-hours. The working is 25 × 1,000 = 25,000.
Is a food Calorie the same as a calorie?
No — it is a thousand of them. The Calorie on a nutrition label is a kilocalorie, written with a capital C in principle and almost never in practice. A 250 Calorie chocolate bar holds 250,000 physics calories, or about 1,046 kilojoules, which is why European labels quote kJ alongside.
What does a kilowatt-hour actually represent?
One kilowatt drawn for one hour — a 1,000 W heater running for sixty minutes, or a 100 W bulb for ten hours. It is the unit your electricity bill is priced in, and it equals exactly 3.6 million joules.
How much energy is one BTU?
Roughly the heat needed to raise one pound of water by one degree Fahrenheit — about 1,055 joules, or the energy in a single kitchen match. Air conditioners are rated in BTU per hour, where a 12,000 BTU/h unit is one "ton" of cooling and draws around 3.5 kW of heat.
Why is the electronvolt so small?
Because it is sized for single particles: it is the energy one electron picks up crossing a one-volt potential difference. At about 1.6 × 10⁻¹⁹ joules it would be absurd for anything larger, which is precisely why particle physics uses it instead of dragging around twenty leading zeros.