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BTU to Tons

BTU per Second to Tons Calculator

Multiply BTU/s by 0.3 to obtain refrigeration tons.

Find it on the AC's label or spec sheet.

BTU/s
Cooling capacity

Enter a value in BTU/s to see it in refrigeration tons.

Second-to-hour step

An hour has 3,600 seconds, so BTU/s × 3,600 = BTU/hr. Dividing by 12,000 then gives refrigeration tons.

Formula

Refrigeration tons = BTU/s × 0.3, because 3,600 ÷ 12,000 = 0.3.

10 BTU/s equals 3 refrigeration tons.

10 × 3,600 = 36,000 BTU/hr; 36,000 ÷ 12,000 = 3 tons

Check your time unit

BTU/s, BTU/min and BTU/hr differ by a factor of 60 at each step: 1 ton = 200 BTU/min = 12,000 BTU/hr.

A rating in plain BTU, with no time unit, is energy rather than capacity.