kWh

What is a Kilowatt Hour?

Definition

A kilowatt-hour (kWh) is a unit of energy equal to 3.6 million joules, representing one kilowatt of power used for one hour.

Popular Kilowatt Hour Conversions

Most common conversions from Kilowatt Hours

1 kWh = 3,600,000 J Kilowatt Hour to Joules 1 kWh = 3,600 kJ Kilowatt Hour to Kilojoules 1 kWh = 860,420.65 cal Kilowatt Hour to Calories 1 kWh = 860.4207 kcal Kilowatt Hour to Kilocalories 1 kWh = 1,000 Wh Kilowatt Hour to Watt Hours 1 kWh = 22,469,432,668,058,746,028,556,288 eV Kilowatt Hour to Electronvolts

History

The kilowatt-hour became the standard unit for electrical energy billing in the early 20th century with the spread of electric utilities.

Common Uses

Electricity billing
Energy consumption ratings
Electric vehicle range
Solar panel output

Fun Facts

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The average US home uses about 30 kWh per day

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1 kWh can run a 100W bulb for 10 hours

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Electric car batteries are rated in kWh (typically 40-100 kWh)

All Kilowatt Hour Conversions

Kilowatt Hours to Joules kWh → J Kilowatt Hours to Kilojoules kWh → kJ Kilowatt Hours to Calories kWh → cal Kilowatt Hours to Kilocalories kWh → kcal Kilowatt Hours to Watt Hours kWh → Wh Kilowatt Hours to Electronvolts kWh → eV Kilowatt Hours to BTUs kWh → BTU Kilowatt Hours to Therms kWh → thm