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BTU/h – kW – Ton of Refrigeration Converter

Convert HVAC capacity among BTU/h, thermal kW and tons of refrigeration.

✓ Method reviewed · 2026-08-22
CALCULATORHow many kW or tons of cooling is a BTU/h rating?

Results are for information and preliminary estimation. For critical technical work, manufacturer data, local codes and qualified professional review take precedence.

CALCULATION ENGINEBTU-KW-TON · R1.5.1Engine and route QA: PASS · Method and limits visible
Trust & methodology →
1Enter real inputs
2Press Calculate
3Read result with assumptions
Method & assumptions

How is it calculated?

1 thermal kW ≈ 3412.142 BTU/h; 1 ton of refrigeration = 12,000 BTU/h ≈ 3.51685 thermal kW. Do not confuse thermal kW with electrical input.

Example

12,000 BTU/h is about 3.52 thermal kW and 1 ton of refrigeration.

What questions does this tool answer?

  • How many kW or tons of cooling is a BTU/h rating?
  • How is BTU/h – kW – Ton of Refrigeration Converter calculated?
  • What inputs are needed for BTU/h – kW – Ton of Refrigeration Converter?
WHAT CHANGES THE RESULT

Check these before using the estimate

HVAC capacity depends on more than floor area. Volume, solar gain, insulation, glazing, occupants and equipment loads all matter; critical selections require a proper heat-load assessment.

  • Insulation, glazing area and orientation
  • Local design temperature and solar gain
  • Ceiling height plus people and equipment heat loads
  • Real equipment efficiency and installation conditions
FAQ

Frequently asked questions

Does a 3.5 kW AC draw 3.5 kW electrically?+

No. This is thermal capacity. Electrical input depends on COP/EER and operating conditions.

Is a refrigeration ton a mass unit?+

No. It is a historical unit of cooling capacity.