Megawatt-Hour to Watt-Hour Converter

Energy Converter

27 units available

Decimals:

From

To

1,000,000

1 MWh = 1,000,000 Wh

Formula:

Wh = MWh × 1,000,000

With your value: 1 MWh = 1,000,000 Wh

How big is that?

Everyday references on a logarithmic scale, all expressed in megawatt-hour so you can sanity-check the result.

Heartbeat (1/3.6e+9 your value)2.78e-10 MWh

AA battery charge (1/3.6e+5 your value)0.00000278 MWh

Slice of bread (1/1.3e+4 your value)0.0000778 MWh

Daily food intake (1/4.3e+2 your value)0.00233 MWh

Litre of petrol (1/1.1e+2 your value)0.00950 MWh

Your value1.00 MWh

Other Megawatt-Hour to Watt-Hour conversions

2 MWh to Wh 3 MWh to Wh 4 MWh to Wh 5 MWh to Wh 6 MWh to Wh 7 MWh to Wh 8 MWh to Wh

Megawatt-Hour to Watt-Hour Conversion Table

Megawatt-Hour (MWh)	Watt-Hour (Wh)
0.5	500,000
1	1,000,000
2	2,000,000
5	5,000,000
10	10,000,000
15	15,000,000
20	20,000,000
25	25,000,000
50	50,000,000
100	100,000,000
250	250,000,000
500	500,000,000
1000	1,000,000,000

Watt-Hour to Megawatt-Hour Conversion Table

Watt-Hour (Wh)	Megawatt-Hour (MWh)
0.5	5.000000e-7
1	1.000000e-6
2	2.000000e-6
5	5.000000e-6
10	1.000000e-5
15	1.500000e-5
20	2.000000e-5
25	2.500000e-5
50	5.000000e-5
100	0.0001
250	0.00025
500	0.0005
1000	0.001

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Megawatt-Hour (MWh)

Energy

Exact conversion

Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

Watt-Hour (Wh)

Energy

Exact conversion

Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

How to Convert Megawatt-Hour to Watt-Hour

To convert from Megawatt-Hour (MWh) to Watt-Hour (Wh), multiply the value by 1,000,000.

Formula: Wh = MWh × 1,000,000

Reverse: MWh = Wh × 0.000001

Step-by-Step Example

Start with your value in Megawatt-Hour. For example: 5 MWh
Multiply by the conversion factor: 5 x 1,000,000
The result is: 5,000,000 Wh

About Megawatt-Hour

The megawatt-hour (MWh) is a unit of energy and work. One megawatt-hour equals 3.600000 × 10^+9 joules. UnitConvertLab converts it against every other energy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: energy calculations, engineering and science, education.

About Watt-Hour

The watt-hour (Wh) is a unit of energy and work. One watt-hour equals 3600 joules. UnitConvertLab converts it against every other energy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: energy calculations, engineering and science, education.

Frequently Asked Questions

How many Watt-Hour are in 1 Megawatt-Hour?

There are exactly 1,000,000 Watt-Hour in 1 Megawatt-Hour. This means the conversion factor from Megawatt-Hour to Watt-Hour is 1,000,000.

What is the formula to convert Megawatt-Hour to Watt-Hour?

The formula to convert Megawatt-Hour to Watt-Hour is: Wh = MWh × 1,000,000. For example, to convert 10 Megawatt-Hour to Watt-Hour, you would multiply 10 by 1,000,000.

What is a Megawatt-Hour?