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Split AC Tonnage Calculator

Calculate split AC tonnage from BTU/hr or kW. Convert AC tons into cooling capacity with our free online calculator.

Tonnage = Cooling Capacity ÷ 12,000 (BTU/hr) or ÷ 3.51685 (kW)
Use the AC's rated cooling capacity from its specification label or manufacturer datasheet — not the electrical input wattage.
Split AC Tonnage — Reference Table
AC CapacityBTU/hrkW
0.5 Ton6,0001.758
1 Ton12,0003.517
1.5 Ton18,0005.275
2 Ton24,0007.034
2.5 Ton30,0008.792
3 Ton36,00010.551
⚠ 1 Ton of Refrigeration = 12,000 BTU/hr ≈ 3.51685 kW. Always use rated cooling capacity, not electrical input power.
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Need to know your split AC capacity? Our Split AC Tonnage Calculator makes it easy. It helps you find AC tons from cooling capacity. You can also find BTU and kW from AC tons.

We developed this calculator to help users get fast and clear results. It works with two units: BTU/hr and kW. You can also enter AC tonnage to find its cooling capacity.

Whether you own a home or run a business, this tool can help. It makes AC capacity checks quick and simple.

Split AC Tonnage Formula

One ton of cooling equals 12,000 BTU per hour. It also equals 3.51685 kW.

BTU/hr to tons:

AC Tonnage = Cooling Capacity (BTU/hr) ÷ 12,000

kW to tons:

AC Tonnage = Cooling Capacity (kW) ÷ 3.51685

Tons to BTU/hr:

Cooling Capacity (BTU/hr) = AC Tonnage × 12,000

Tons to kW:

Cooling Capacity (kW) = AC Tonnage × 3.51685

Think of AC tonnage like a bucket size. A larger bucket can hold more water. In the same way, a higher AC tonnage means more cooling capacity.

How to Use the Online Split AC Tonnage Calculator

Our online split AC tonnage calculator is easy to use. Follow these five steps:

  1. Open the calculator and choose your calculation mode.

  2. Select Capacity to Tonnage to find AC tons.

  3. Enter the cooling capacity in BTU/hr or kW.

  4. Select Tonnage to Capacity if you know the AC tons.

  5. Click the calculate button to see your results in tons, BTU/hr and kW.

You don't need to do any manual math. The tool handles each step for you.

Example Split AC Tonnage Calculation

Let's say your split AC has a cooling capacity of 24,000 BTU/hr.

Step 1: Write the formula.

AC Tonnage = BTU/hr ÷ 12,000

Step 2: Add the value.

AC Tonnage = 24,000 ÷ 12,000

Step 3: Get the result.

AC Tonnage = 2 tons

So, a split AC with 24,000 BTU/hr has a 2-ton cooling capacity.

You can also convert 2 tons into kW:

2 × 3.51685 = 7.0337 kW

The same AC has a capacity of 7.0337 kW.

Final Verdict

Our Split AC Tonnage Calculator helps you check AC cooling capacity with ease. It converts BTU/hr and kW into tons. It also converts AC tons into BTU/hr and kW.

Use the tool to save time and avoid math errors. Always check the AC label for its rated cooling capacity. Remember, AC tonnage alone does not tell you the right size for a room. Room size, heat, and other factors also matter.

FAQs

1. What is split AC tonnage?

Split AC tonnage shows how much heat an AC can remove. One ton equals 12,000 BTU/hr of cooling.

2. How many BTU/hr are in one ton?

One ton of AC cooling equals 12,000 BTU/hr.

3. How many kW are in one ton of AC?

One ton equals 3.51685 kW of cooling capacity in this calculator.

4. How do I calculate AC tonnage from BTU?

Divide the rated cooling capacity in BTU/hr by 12,000. For example, 24,000 BTU/hr equals 2 tons.

5. Can I calculate AC tonnage from kW?

Yes. Divide the cooling capacity in kW by 3.51685 to get AC tons.

6. Does AC tonnage mean power use?

No. Tonnage measures cooling capacity, not electricity use. Check the power input or rated wattage to learn how much power an AC uses.