Convert Kilowatt-hour to Megawatt-hour
1 kilowatt-hour = 0.001 megawatt-hour (MWh). For example, 10 kilowatt-hour = 0.01 megawatt-hour and 100 kilowatt-hour = 0.1 megawatt-hour. Type any value below to convert kilowatt-hour to megawatt-hour both ways — it runs entirely in your browser.
Quick answer: Kilowatt-hour to Megawatt-hour
1 Kilowatt-hour = 0.001 Megawatt-hour (kWh → MWh). To convert kilowatt-hour to megawatt-hour, multiply by 0.001. To convert megawatt-hour to kilowatt-hour, multiply by 1,000. The converter at the top does this instantly and both ways; the sections below give the formula, worked examples, a full conversion chart and answers to the most common kilowatt-hour-to-megawatt-hour questions.
How to convert Kilowatt-hour to Megawatt-hour
To convert kilowatt-hour to megawatt-hour, multiply the number of kilowatt-hour by the conversion factor 0.001, because 1 kWh = 0.001 MWh. The conversion is linear, so the same factor works for any value — whole numbers, decimals or fractions. For the reverse direction, 1 MWh = 1,000 kWh, so you divide by 0.001 (or multiply by 1,000) to turn megawatt-hour back into kilowatt-hour.
MWh = kWh × 0.001 ·
kWh = MWh × 1,000
- Write down the value you want to convert, in kilowatt-hour.
- Multiply it by 0.001.
- The result is the same area/length/quantity expressed in megawatt-hour.
Kilowatt-hour to Megawatt-hour — worked examples
Each row shows the exact arithmetic so you can follow the conversion step by step. For example, 5 kilowatt-hour is 0.005 megawatt-hour because 5 kWh × 0.001 = 0.005 MWh.
| Kilowatt-hour | Calculation | Megawatt-hour |
|---|---|---|
| 1 kWh | 1 kWh × 0.001 = 0.001 MWh | 0.001 MWh |
| 2 kWh | 2 kWh × 0.001 = 0.002 MWh | 0.002 MWh |
| 3 kWh | 3 kWh × 0.001 = 0.003 MWh | 0.003 MWh |
| 5 kWh | 5 kWh × 0.001 = 0.005 MWh | 0.005 MWh |
| 7 kWh | 7 kWh × 0.001 = 0.007 MWh | 0.007 MWh |
| 10 kWh | 10 kWh × 0.001 = 0.01 MWh | 0.01 MWh |
| 12 kWh | 12 kWh × 0.001 = 0.012 MWh | 0.012 MWh |
| 15 kWh | 15 kWh × 0.001 = 0.015 MWh | 0.015 MWh |
| 20 kWh | 20 kWh × 0.001 = 0.02 MWh | 0.02 MWh |
| 25 kWh | 25 kWh × 0.001 = 0.025 MWh | 0.025 MWh |
| 50 kWh | 50 kWh × 0.001 = 0.05 MWh | 0.05 MWh |
| 100 kWh | 100 kWh × 0.001 = 0.1 MWh | 0.1 MWh |
Common Kilowatt-hour to Megawatt-hour conversions
These are the kilowatt-hour-to-megawatt-hour values people look up most often. Every figure is computed from the exact factor, so you can rely on them for quick reference:
- 1 kilowatt-hour = 0.001 megawatt-hour
- 2 kilowatt-hour = 0.002 megawatt-hour
- 2.5 kilowatt-hour = 0.0025 megawatt-hour
- 3 kilowatt-hour = 0.003 megawatt-hour
- 4 kilowatt-hour = 0.004 megawatt-hour
- 5 kilowatt-hour = 0.005 megawatt-hour
- 6 kilowatt-hour = 0.006 megawatt-hour
- 7 kilowatt-hour = 0.007 megawatt-hour
- 8 kilowatt-hour = 0.008 megawatt-hour
- 9 kilowatt-hour = 0.009 megawatt-hour
- 10 kilowatt-hour = 0.01 megawatt-hour
- 12 kilowatt-hour = 0.012 megawatt-hour
- 15 kilowatt-hour = 0.015 megawatt-hour
- 20 kilowatt-hour = 0.02 megawatt-hour
- 25 kilowatt-hour = 0.025 megawatt-hour
- 30 kilowatt-hour = 0.03 megawatt-hour
- 50 kilowatt-hour = 0.05 megawatt-hour
- 75 kilowatt-hour = 0.075 megawatt-hour
- 100 kilowatt-hour = 0.1 megawatt-hour
- 200 kilowatt-hour = 0.2 megawatt-hour
- 500 kilowatt-hour = 0.5 megawatt-hour
- 1000 kilowatt-hour = 1 megawatt-hour
Kilowatt-hour to Megawatt-hour conversion chart (both directions)
The chart below converts kilowatt-hour to megawatt-hour and megawatt-hour to kilowatt-hour side by side, so it works whichever way you need. 1 kilowatt-hour = 0.001 megawatt-hour, and 1 megawatt-hour = 1,000 kilowatt-hour.
| Kilowatt-hour → Megawatt-hour | Megawatt-hour → Kilowatt-hour |
|---|---|
| 0.25 kWh = 0.00025 MWh | 0.25 MWh = 250 kWh |
| 0.5 kWh = 0.0005 MWh | 0.5 MWh = 500 kWh |
| 1 kWh = 0.001 MWh | 1 MWh = 1,000 kWh |
| 2 kWh = 0.002 MWh | 2 MWh = 2,000 kWh |
| 3 kWh = 0.003 MWh | 3 MWh = 3,000 kWh |
| 4 kWh = 0.004 MWh | 4 MWh = 4,000 kWh |
| 5 kWh = 0.005 MWh | 5 MWh = 5,000 kWh |
| 6 kWh = 0.006 MWh | 6 MWh = 6,000 kWh |
| 7 kWh = 0.007 MWh | 7 MWh = 7,000 kWh |
| 8 kWh = 0.008 MWh | 8 MWh = 8,000 kWh |
| 9 kWh = 0.009 MWh | 9 MWh = 9,000 kWh |
| 10 kWh = 0.01 MWh | 10 MWh = 10,000 kWh |
| 12 kWh = 0.012 MWh | 12 MWh = 12,000 kWh |
| 15 kWh = 0.015 MWh | 15 MWh = 15,000 kWh |
| 20 kWh = 0.02 MWh | 20 MWh = 20,000 kWh |
| 25 kWh = 0.025 MWh | 25 MWh = 25,000 kWh |
| 30 kWh = 0.03 MWh | 30 MWh = 30,000 kWh |
| 40 kWh = 0.04 MWh | 40 MWh = 40,000 kWh |
| 50 kWh = 0.05 MWh | 50 MWh = 50,000 kWh |
| 75 kWh = 0.075 MWh | 75 MWh = 75,000 kWh |
| 100 kWh = 0.1 MWh | 100 MWh = 100,000 kWh |
| 150 kWh = 0.15 MWh | 150 MWh = 150,000 kWh |
| 200 kWh = 0.2 MWh | 200 MWh = 200,000 kWh |
| 250 kWh = 0.25 MWh | 250 MWh = 250,000 kWh |
| 500 kWh = 0.5 MWh | 500 MWh = 500,000 kWh |
| 1000 kWh = 1 MWh | 1000 MWh = 1,000,000 kWh |
Kilowatt-hour vs Megawatt-hour: which is bigger?
A megawatt-hour is the larger unit: one megawatt-hour equals 1,000 kilowatt-hours. Put another way, you need 1,000 kilowatt-hours to make a single megawatt-hour.
What is a Kilowatt-hour? History, origin and usage
The kilowatt-hour — 1,000 watt-hours — became the universal trading unit of electrical energy as power grids spread in the late 19th and early 20th centuries. It rests on the watt, named after James Watt, scaled up to the household level.
The kilowatt-hour is the “unit” your electricity meter records and your utility bills you for; appliance running costs are worked out by multiplying an item’s kilowatt rating by the hours it runs and the price per kWh. It is the single most important energy unit in domestic and commercial energy.
One kilowatt-hour equals exactly 3.6 megajoules (3,600,000 joules), because a kilowatt is 1,000 joules per second and an hour is 3,600 seconds. Running a 1,000-watt appliance for one hour consumes exactly one kilowatt-hour — the figure people informally call a “unit” of electricity.
What is a Megawatt-hour? History, origin and usage
The megawatt-hour is one million watt-hours (1,000 kilowatt-hours), the natural scale for the output of power stations and large industrial loads. Like its smaller relatives it derives from the watt, named after James Watt.
Megawatt-hours measure generation and consumption at grid scale — the daily output of a power plant, the energy traded on wholesale electricity markets, and the capacity of grid-scale batteries. Larger still are the gigawatt-hour (GWh) and terawatt-hour (TWh) used for national-scale figures.
A 1-megawatt generator running flat out for one hour produces one megawatt-hour — roughly the daily electricity use of dozens of average homes. Wholesale electricity is typically priced per megawatt-hour rather than per kilowatt-hour.
Convert 1 Kilowatt-hour to other units
It can help to see a kilowatt-hour next to the other units it is commonly compared with. One kilowatt-hour (kWh) is equal to:
| 1 Kilowatt-hour equals | Unit |
|---|---|
| 3,600,000 J | Joule |
| 3,600,000 N·m | Newton-metre |
| 3,600 kJ | Kilojoule |
| 3.6 MJ | Megajoule |
| 1,000 Wh | Watt-hour |
| 0.001 MWh | Megawatt-hour |
| 2,655,224 ft·lbf | Foot-pound |
| 22,469,430,000,000,000,000 MeV | Megaelectronvolt |
| 860,420.7 cal | Calorie |
| 860.4207 kcal | Kilocalorie |
| 3,412.142 BTU | British Thermal Unit |
Convert 1 Megawatt-hour to other units
One megawatt-hour (MWh) is equal to:
| 1 Megawatt-hour equals | Unit |
|---|---|
| 3,600,000,000 J | Joule |
| 3,600,000,000 N·m | Newton-metre |
| 3,600,000 kJ | Kilojoule |
| 3,600 MJ | Megajoule |
| 1,000,000 Wh | Watt-hour |
| 1,000 kWh | Kilowatt-hour |
| 2,655,224,000 ft·lbf | Foot-pound |
| 22,469,430,000,000,000,000,000 MeV | Megaelectronvolt |
| 860,420,700 cal | Calorie |
| 860,420.7 kcal | Kilocalorie |
| 3,412,142 BTU | British Thermal Unit |
Tips for converting Kilowatt-hour to Megawatt-hour
- To go from kilowatt-hour to megawatt-hour, multiply by 0.001; to go back, divide by 0.001 (or multiply by 1,000).
- For a quick mental estimate, remember that 1 kilowatt-hour ≈ 0.001 megawatt-hour, so 10 kilowatt-hour ≈ 0.01 megawatt-hour.
- The converter above keeps full precision; the tables round for readability, so use the tool for exact figures.
- Both fields update live as you type — change either side to convert in that direction.
How to use this Kilowatt-hour to Megawatt-hour converter
Type a number into the Kilowatt-hour field and the equivalent in Megawatt-hour appears instantly — there is no “convert” button to press and nothing is sent to a server, so it works offline once the page has loaded and is safe for any data. You can also type into the Megawatt-hour field to convert the other way (megawatt-hour to kilowatt-hour). Use the swap control to flip the two units, and copy the result with a single click. Because the calculation runs in your browser with full floating-point precision, the converter is more exact than the rounded figures shown in the reference chart above — use the chart for quick look-ups and the tool for precise work.
Accuracy and method
Every figure on this page — the formula, the worked examples, the conversion chart and the “convert to other units” tables — is computed from a single verified conversion factor (1 kWh = 0.001 MWh), never copied from a hand-typed lookup table that could drift. That factor is derived from each unit’s definition in terms of a common base unit, and an automated check re-verifies all of the site’s factors on every update, so the numbers here stay correct over time. This matters for kilowatt-hour-to-megawatt-hour conversions because a small rounding error in a published table compounds quickly at larger quantities; computing from the exact factor avoids that.
Sources
- BIPM — The International System of Units (SI Brochure) — the defining document for the SI, published by the International Bureau of Weights and Measures. It fixes the base unit that this conversion resolves to, which is why the factor here can be exact rather than approximate.
- NIST — Definitions of the SI base units — the US National Institute of Standards and Technology reference for the SI base units, used here as an independent cross-check on the base-unit definition.
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Frequently asked questions
- How many megawatt-hour are in 1 kilowatt-hour?
- 1 kilowatt-hour = 0.001 megawatt-hour (MWh). To convert any number of kilowatt-hour to megawatt-hour, multiply by 0.001.
- How do I convert kilowatt-hour to megawatt-hour?
- Multiply the number of kilowatt-hour by 0.001. For example, 10 kilowatt-hour = 10 × 0.001 = 0.01 megawatt-hour, and 25 kilowatt-hour = 0.025 megawatt-hour.
- How many kilowatt-hour are in 1 megawatt-hour?
- 1 megawatt-hour = 1,000 kilowatt-hour. So to convert megawatt-hour back to kilowatt-hour, multiply by 1,000.
- What is the formula to convert kilowatt-hour to megawatt-hour?
- megawatt-hour = kilowatt-hour × 0.001. The reverse formula is kilowatt-hour = megawatt-hour × 1,000.
- How much is 100 kilowatt-hour in megawatt-hour?
- 100 kilowatt-hour = 0.1 megawatt-hour. (And 1000 kilowatt-hour = 1 megawatt-hour.)
- Which is bigger, a kilowatt-hour or a megawatt-hour?
- A megawatt-hour is larger: 1 megawatt-hour = 1,000 kilowatt-hour.
- Is this kilowatt-hour to megawatt-hour converter accurate?
- Yes — every value is computed from the exact 0.001 MWh per kWh factor (not rounded look-up tables), and the factors are re-verified automatically on every update.
- Can I convert megawatt-hour to kilowatt-hour too?
- Yes. The converter works both ways — enter a value in either field. 1 megawatt-hour = 1,000 kilowatt-hour.