How many watt-hours are in 1 kilowatt-hour?

1 kilowatt-hour equals 1000 Wh.

How do I convert watt-hours back to kilowatt-hours?

Use the reverse converter: 1 watt-hour equals 0.001 kWh.

Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.

To convert kilowatt-hours to watt-hours, multiply the value by 1000.

Wh = kWh × 1000

40 kWh × 1000 = 40000 Wh

Kilowatt-hour (kWh): The unit on household electricity bills. Equal to 3.6 megajoules.
Watt-hour (Wh): Used for battery capacity. Equal to 3,600 joules.

How do I convert kilowatt-hours to watt-hours?: To convert kilowatt-hours to watt-hours, multiply the value by 1000.
How many watt-hours are in 1 kilowatt-hour?: 1 kilowatt-hour equals 1000 Wh.
How many watt-hours are in 10 kilowatt-hours?: 10 kWh equals 10000 Wh.
How do I convert watt-hours back to kilowatt-hours?: Use the reverse converter: 1 watt-hour equals 0.001 kWh.
Is this converter accurate?: Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.