Newsletter Subscribe
Enter your email address below and subscribe to our newsletter
HVAC made simple
HVAC CALCULATOR
HVAC Unit Conversions
Convert common HVAC measurements for capacity, airflow, temperature, pressure, dimensions, power and water flow.
Choose a Conversion
Select the HVAC measurement you want to convert.
BTU/hr
3.5169
kW
12,000 BTU/hr is approximately
3.5169 kW
Original Value
12,000 BTU/hr
Converted Value
3.5169 kW
Conversion Formula
BTU/hr ÷ 3,412.142 = kW
HVAC Conversion Quick Reference
Common conversion factors used throughout this calculator.
1 kW
3,412.142 BTU/hr
1 Ton
12,000 BTU/hr
1 CFM
1.699 m³/h
1 CFM
0.47195 L/s
1 PSI
6.89476 kPa
1 in. WC
249.089 Pa
1 Inch
25.4 mm
1 HP
0.7457 kW
1 Watt
3.41214 BTU/hr
1 US GPM
3.78541 L/min
1 US GPM
0.227125 m³/h
⚠️ Capacity and Electrical Power Are Not Always the Same Thing
BTU/hr and kW can both describe a rate of energy transfer, but an HVAC system’s thermal capacity should not automatically be interpreted as its electrical power consumption. For example, converting 36,000 BTU/hr gives approximately 10.55 kW of thermal capacity, but that does not mean a 36,000 BTU/hr air conditioner consumes 10.55 kW of electricity.
Important:
These conversions provide estimated values based on standard
conversion factors. Equipment ratings, field measurements and
engineering calculations may require additional precision,
conditions or manufacturer-specific information. For equipment
selection, system design or critical HVAC calculations, verify
specifications and consult a qualified HVAC professional.
