Watts to Joules Calculator
Calculate energy in joules (J) based on power and time.
Formula Used:
What are Watts and Joules?
- Watt (W): The unit of power, meaning the rate at which energy is used or generated.
- Joule (J): The unit of energy. One joule is the amount of energy required to do one
newton-meter of work.
This calculator converts electrical power (measured in watts) and time into energy (measured in joules).
It’s a user-friendly tool suitable for various applications.
Formula for Watts to Joules Converter
The fundamental principle behind this conversion is a straightforward formula. Here’s how to
calculate energy (in joules) from power (in watts) and time (in seconds):
Where:
- E is the energy in joules (J)
- P is the power in watts (W)
- t is the time in seconds (s)
How to use this Watts to Joules Calculator
Step 1: Enter the Power Value
Input your power measurement and select the appropriate unit:
- Milliwatts (mW): For very small power values (0.001 watts)
- Watts (W): The standard unit of power
- Kilowatts (kW): For larger power values (1000 watts)
Step 2: Enter the Time Value
Input the duration and select the time unit:
- Seconds (s): The standard unit of time
- Minutes (min): For medium durations (60 seconds)
- Hours (h): For longer durations (3600 seconds)
Step 3: Get Your Result
Click “Calculate” and instantly see the energy value in joules (J).
Example: Light Bulb Energy Consumption
Scenario: A 60-watt light bulb is turned on for 2 minutes.
Calculation: E = 60W × (2 × 60s) = 60W × 120s = 7,200J
Result: The light bulb consumes 7,200 joules (7.2 kilojoules) of energy.
