How many Kilowatt hour are in one Watt hour?

One Watt hour equals 0.001 kWh. Enter any amount above to get an exact figure for your own value.

Is this converter accurate?

Yes. It uses the exact international definition of each unit and computes on your device, so the only rounding is for display.

Do you upload the numbers I enter?

No. The Watt hour to Kilowatt hour conversion runs entirely in your browser tab, and nothing you type is sent to a server.

Does it work on my phone?

Yes. It runs in any modern mobile browser and keeps working offline once the page has loaded.

All converters

Watt hour to Kilowatt hour

Convert Watt hour to Kilowatt hour and get the exact value instantly.

Watt hour (Wh)Kilowatt hour (kWh)0.001

1 Wh = 0.001 kWh

Related conversions

Watt hour → Joule Watt hour → Kilojoule Watt hour → Megajoule Watt hour → Gigajoule Watt hour → Calorie Watt hour → Kilocalorie Watt hour → Electronvolt Watt hour → British thermal unit

About this conversion

To convert Watt hour to Kilowatt hour, multiply the number of Watt hour by 0.001.

Energy shows up as joules, calories, kilowatt-hours or BTU depending on the field (nutrition, an electricity bill, heating or physics), so a conversion makes the numbers comparable.

Conversion table

Watt hour (Wh)	Kilowatt hour (kWh)
1 Wh	0.001 kWh
2 Wh	0.002 kWh
5 Wh	0.005 kWh
10 Wh	0.01 kWh
100 Wh	0.1 kWh

How to use this converter

Enter your Watt hour value
Type any number into the Watt hour field. It starts at 1 so you can read the rate straight away.
Read the Kilowatt hour result
The amount in Kilowatt hour updates as you type, so there is no button to press and nothing to wait for.
Swap or keep exploring
Use the swap control to flip the direction, or pick a related conversion from the list below.

Frequently asked

How many Kilowatt hour are in one Watt hour?: One Watt hour equals 0.001 kWh. Enter any amount above to get an exact figure for your own value.
Is this converter accurate?: Yes. It uses the exact international definition of each unit and computes on your device, so the only rounding is for display.
Do you upload the numbers I enter?: No. The Watt hour to Kilowatt hour conversion runs entirely in your browser tab, and nothing you type is sent to a server.
Does it work on my phone?: Yes. It runs in any modern mobile browser and keeps working offline once the page has loaded.

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