Wh

What is a Watt Hour?

Definition

A watt-hour (Wh) is a unit of energy equal to 3,600 joules, representing one watt of power used for one hour.

Popular Watt Hour Conversions

Most common conversions from Watt Hours

1 Wh = 3,600 J Watt Hour to Joules 1 Wh = 3.6 kJ Watt Hour to Kilojoules 1 Wh = 860.4207 cal Watt Hour to Calories 1 Wh = 0.860421 kcal Watt Hour to Kilocalories 1 Wh = 0.001 kWh Watt Hour to Kilowatt Hours 1 Wh = 22,469,432,668,058,747,404,288 eV Watt Hour to Electronvolts

History

The watt-hour is commonly used for measuring battery capacity and small-scale energy consumption.

Common Uses

Battery capacity (phones, laptops)
Small device energy usage
Solar panel daily output
Portable electronics

Fun Facts

💡

A smartphone battery typically holds 10-15 Wh

💡

A laptop battery holds about 50-100 Wh

💡

Airlines limit batteries to 100 Wh for carry-on

All Watt Hour Conversions

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