Use this calculator to easily and accurately convert commonly used air-conditioner sizing units such as:
- Ton to BTU
- Ton to kW
- BTU to Ton
- BTU to kW
The calculator above uses the conversion ratios below.
Air-conditioner capacity conversion ratios
To convert air-conditioner BTU to Ton, kW, and vice-versa, use the following conversion ratios:
- 1 Ton =3.517kW
- 1 Ton =12,000 BTU
Alternatively, you can refer to the table below to easily convert common air-conditioner capacities in Ton to BTU and kW and vice-versa.
| No. | Air-conditioner size (Ton) | Air-conditioner size (BTU) | Air-conditioner size (kW) |
| 1 | 1 | 12,000 | 3.5 |
| 2 | 1.5 | 18,000 | 5.23 |
| 3 | 2 | 24,000 | 7 |
| 4 | 3 | 36,000 | 10.5 |
| 5 | 4 | 48,000 | 14 |
| 6 | 5 | 60,000 | 17.6 |
Table showing equivalent BTU and KW capacities for selected air-conditioner capacities (Ton)
Note:
- The 9,000 and 12,000 BTU air-conditioners are usually available in both the 115V and 208-230VAC versions.
- Air conditioners with cooling capacity higher than 12,000 BTU are in the higher 208-230VAC range.
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