How do I convert Watt-hour to Kilowatt-hour?

Multiply the Watt-hour value by 0.001 to get the equivalent in Kilowatt-hour. For example, 10 Wh = 0.01 kWh.

Is this conversion exact?

Yes, our converter uses precise conversion factors based on international standards. Results are accurate to at least 6 significant figures.

Free online Watt-hour (Wh) to Kilowatt-hour (kWh) converter. Get instant, accurate results with our conversion tool.

Watt-hour (Wh)

Kilowatt-hour (kWh)

0.001

1 Wh = 0.001 kWh

To convert Watt-hour (Wh) to Kilowatt-hour (kWh), multiply by 0.001

Kilowatt-hour (kWh) = Watt-hour (Wh) × 0.001