Convert electrical power in Watts to heat energy rates like BTU/hr.
Input
Heat Output
BTU / Hour-BTU/h
Calories / Second-cal/s
Joules / Second-J/s
About this calculator
Quick Reference
1000 W3412 BTU/h
1 kW860 kcal/h
Overview
This tool helps convert electrical wattage into thermal energy output units. This is useful for sizing air conditioners, heaters, and understanding heat dissipation.
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Pro Tips
1 Watt ≈ 3.412 BTU/hr.
1 Watt ≈ 0.239 calories per second.
All electronic devices generate heat equal to their power consumption (thermodynamics).
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Fun Facts
"A human body at rest radiates heat equivalent to about 100 Watts."
"The 'British Thermal Unit' (BTU) is the heat needed to raise 1 lb of water by 1°F."
