BTU Converter
Convert heating and cooling power between BTU/h, watts, kilowatts, and refrigeration tons.
Estimates for planning only. Verify sizing against local codes and a qualified HVAC professional.
How it works
- 1Select your input unit — BTU/h, watts, kilowatts, or tons.
- 2Enter the value of the power or cooling capacity to convert.
- 3All equivalent values update instantly: BTU/h, W, kW, and tons.
Use cases
- Comparing air-conditioner ratings listed in different units (BTU/h vs kW).
- Converting a chiller capacity from tons to kW for electrical load planning.
- Checking a heater’s wattage meets a required BTU/h target.
Frequently asked questions
How many watts is 1 ton of refrigeration?
1 ton = 12,000 BTU/h ≈ 3517 W (3.517 kW). The exact factor is 1 BTU/h = 0.29307107 W.
What is the BTU/h to watts factor?
1 BTU/h = 0.29307107 W, and 1 W = 3.41214 BTU/h. A 5000 BTU/h window unit removes about 1465 W of heat.
Why do ratings use tons, BTU/h, or kW?
US residential systems use BTU/h or tons (1 ton = 12,000 BTU/h); European and commercial systems use kW. All express the same quantity — power.
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