Convert Kilowatt-Hours to Watt-Hours

The Conversion Formula

To convert kilowatt-hours to watt-hours, multiply the value by the conversion factor: 1 kWh = 1000 Wh. For a worked example, suppose you need to convert 25 kWh to watt-hours: 25 × 1000 = 25000 Wh. To convert in the opposite direction, divide by 1000, or equivalently multiply by 0.001.

About kilowatt-hours

The kilowatt-hour (kWh) is the unit of energy used to bill electricity. It is not a unit of power (kilowatts), but of energy: it is 1,000 watts of power sustained for one hour. One kWh equals exactly 3.6 million Joules. It was popularized by the electric utility industry as a unit easy for consumers to understand. kilowatt-hours are commonly used in Electric bills, Electric vehicle batteries, Solar panel output, and Home energy audits, Power plant generation.

Running a 1,000W microwave for one hour uses 1 kWh.

About watt-hours

The watt-hour (Wh) is a smaller version of the kilowatt-hour. It is the standard for rating the capacity of batteries in laptops, smartphones, and power banks. Airlines often limit spare batteries to 100Wh for safety. watt-hours are commonly used in Laptop batteries, Power banks, Smartphone specs, and Drone batteries, Portable speakers.

A typical phone battery holds 10-15 Wh.

When Would You Convert kilowatt-hours to watt-hours?

Converting between kilowatt-hours and watt-hours is one of the most common energy conversions. You might need this conversion when working with international specifications, following instructions written for a different measurement system, or comparing values across different standards. Having the conversion factor (1 kWh = 1000 Wh) memorized or bookmarked can save time in professional and everyday contexts alike.