Fast reference
TL;DR
Use kilowatts as the anchor: 1 mechanical horsepower is about 0.7457 kW, 1 kW is about 3412.14 BTU/h, and 1 ton of refrigeration is about 3.51685 kW.
Use for
Power Conversion
Best next step
Check the table, then calculate
Reviewed
2026-07-04
Guide
Overview
A power conversion chart connecting kilowatts, horsepower, BTU per hour and tons of refrigeration for HVAC and engineering work.
These factors are suitable for quick reference. Use the calculator for exact custom values and document the horsepower definition used.
- Use the chart for fast checks.
- Use the linked calculator for custom values.
- Keep the unit definition clear before rounding.
- Record the source when values enter technical work.
Reference table
Power conversion chart
These factors are suitable for quick reference. Use the calculator for exact custom values and document the horsepower definition used.
| Unit | Equivalent | Note |
|---|---|---|
| 1 kW | 3412.14 BTU/h | heating and cooling rate |
| 1 hp mechanical | 0.7457 kW | common motor rating |
| 1 metric hp | 0.7355 kW | cheval vapeur |
| 1 ton refrigeration | 3.51685 kW | HVAC cooling capacity |
| 1 W | 1 J/s | SI relationship |
Workflow
How to use this reference
Before converting, confirm whether the problem is real power, heat rate, cooling capacity or motor shaft power.
Step 1
Use kW for electrical and engineering comparison.
Step 2
Use BTU/h for heating and HVAC communication.
Step 3
Use tons of refrigeration for cooling capacity.
Step 4
State whether horsepower is mechanical, metric or electrical.
Quality check
Common mistakes to avoid
Power and energy are often confused.
FAQ
Common questions
How many BTU/h are in 1 kW?
1 kW is approximately 3412.14 BTU/h.
How many kW are in one ton of refrigeration?
One refrigeration ton is approximately 3.51685 kW.
Is kW the same as kWh?
No. kW is power; kWh is energy over time.
Reference trail
Sources
Reference sources checked on 2026-07-04.