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How to Calculate Power
Formula
Power measures the rate at which work is done or energy is transferred. The formula P = W/t gives power in watts when work is in joules and time in seconds. One watt equals one joule per second, and one horsepower is approximately 745.7 watts.
Common use cases:
- Motor and engine ratings
- Electrical power consumption
- Exercise energy expenditure
Frequently Asked Questions
James Wilson
Licensed Professional Engineer, PE, MS Civil Engineering
James is a Licensed Professional Engineer with a Master's in Civil Engineering and over 12 years of experience in structural design and construction project management. He specializes in building calculations, material estimation, and physics-based engineering tools.
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