Skip to main content
BTU to Tons

9,000 BTU to Tons

9,000 BTU per hour equals 0.75 refrigeration tons. That's a 0.75 ton AC size.

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

Cooling capacity

Your 9,000 BTU AC is a 0.75 ton AC.

0.75tons

Sold as a 0.75 ton AC. Exact: 0.75 tons.

1 ton = the cooling of melting 2,000 lb of ice per day.
Cooling kW
2.6376

1 refrigeration ton = 12,000 BTU/hr. Cooling kW is cooling capacity, not electricity use.

  • Tons = BTU/hr ÷ 12,000
  • Cooling kW = BTU/hr × 0.2930710702 ÷ 1,000
Your numbers9,000 ÷ 12,000 = 0.75
Decimal places

Common AC ratings

Choose a capacity to fill the calculator, or open its worked example.

Worked examples:6,0009,00012,00018,00024,00036,000

How the conversion works

Divide 9,000 by 12,000 to convert the capacity.

9,000 ÷ 12,000 = 0.75 tons

Cooling capacity: 2.6376 cooling kW. Cooling kW is not the electricity the AC uses.

Compare 9,000 with 8,000 and 10,000 BTU/hr

Compare 9,000 with 8,000 and 10,000 BTU/hr
BTU/hrTonsCooling kWSize class
8,0000.66672.3446Between 0.5 and 0.75 ton
9,0000.752.63760.75 ton
10,0000.83332.9307Between 0.75 and 1 ton

Does 0.75 tons mean it fits my space?

A refrigeration ton is a capacity unit, equal to 12,000 BTU/hr; it is not the unit's weight.

There is no universal area-to-tonnage ratio. Room conditions, building design and climate affect the required capacity.

Whole-home systems require a separate load calculation.