Watts to mAh Calculator
Calculate required battery mAh from power draw.
Free · instant · private
Watts
Hours
Volts
mAh
Use this result in your next equipment request
Talk through the application or request a project quote from a Sunhub specialist.
Formula & explanation
Formula
mAh = W × h × 1000 ÷ V
Explained
Milliamp-hours equals watts times hours times 1000 divided by voltage. Sizes battery capacity for a required runtime.
Used For
Battery sizing for monitoring equipment, IoT sensors