Watt-Hour to Megawatt-Hour Converter

Energy Converter

27 units available

Decimals:

From

To

1.000000e-6

1 Wh = 1.000000e-6 MWh

Formula:

MWh = Wh × 0.000001

With your value: 1 Wh = 1.000000e-6 MWh

How big is that?

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

Heartbeat (1/3.6e+3 your value)0.000278 Wh

Your value1.00 Wh

AA battery charge (2.8× your value)2.78 Wh

Slice of bread (78× your value)77.8 Wh

Daily food intake (2.3e+3× your value)2.33e+3 Wh

Litre of petrol (9.5e+3× your value)9.50e+3 Wh

Other Watt-Hour to Megawatt-Hour conversions

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

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

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

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.

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

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

How to Convert Watt-Hour to Megawatt-Hour

To convert from Watt-Hour (Wh) to Megawatt-Hour (MWh), multiply the value by 1.000000e-6.

Formula: MWh = Wh × 0.000001

Reverse: Wh = MWh × 1,000,000

Step-by-Step Example

Start with your value in Watt-Hour. For example: 5 Wh
Multiply by the conversion factor: 5 x 1.000000e-6
The result is: 5.000000e-6 MWh

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.

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.

Frequently Asked Questions

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

There are exactly 1.000000e-6 Megawatt-Hour in 1 Watt-Hour. This means the conversion factor from Watt-Hour to Megawatt-Hour is 1.000000e-6.

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

The formula to convert Watt-Hour to Megawatt-Hour is: MWh = Wh × 0.000001. For example, to convert 10 Watt-Hour to Megawatt-Hour, you would multiply 10 by 1.000000e-6.

What is a Watt-Hour?