Formula and units
kW = BTU/h ÷ 3,412.141633
RT = BTU/h ÷ 12,000
RT = BTU/h ÷ 12,000
Values are thermal-capacity conversions. Confirm whether any equipment kW label describes capacity or electrical input.
Lookup table
| BTU/h | Watts | kW | RT |
|---|---|---|---|
| 6,000 | 1,758 | 1.76 | 0.5 |
| 9,000 | 2,638 | 2.64 | 0.75 |
| 12,000 | 3,517 | 3.52 | 1 |
| 18,000 | 5,275 | 5.28 | 1.5 |
| 24,000 | 7,034 | 7.03 | 2 |
| 36,000 | 10,551 | 10.55 | 3 |
Standard and scope
NIST lists the International Table Btu as 1.055056 kJ. This page uses that unit relationship and the conventional 12,000 BTU/h refrigeration ton for comparison.
FAQ
Are table values equipment selections?
No. They are unit conversions and nominal capacity comparisons, not a site-specific load calculation.