Convert BTU per Hour to Horsepower
Instantly convert BTU per Hour (BTU/hr) to Horsepower (hp) with our free online calculator.
Formula: BTU/hr to hp — multiply by 3.9301e-4
Reference Table
| BTU per Hour (BTU/hr) | Horsepower (hp) |
|---|---|
| 1 | 0.000393015 |
| 5 | 0.00196507 |
| 10 | 0.00393015 |
| 25 | 0.00982537 |
| 50 | 0.0196507 |
| 100 | 0.0393015 |
How to Convert BTU per Hour to Horsepower
Formula
To convert BTU per Hour (BTU/hr) to Horsepower (hp): multiply by 3.9301e-4
Step-by-Step
- Start with your value in BTU per Hour (BTU/hr).
- Multiply by 3.9301e-4 to perform the conversion.
- The result is your value expressed in Horsepower (hp).
Conversion Factor
1 BTU/hr = 0.000393015 hp
Reverse Factor
1 hp = 2544.43 BTU/hr
Worked Example
Convert 25 BTU per Hour to Horsepower: 25 BTU/hr = 0.00982537 hp
About BTU per Hour (BTU/hr)
An imperial unit of power (rate of heat transfer), equal to approximately 0.293 watts. BTU/hr is the dominant unit for US HVAC equipment sizing: air conditioner and heat pump capacity (a 24,000 BTU/hr unit is a "2-ton AC"), furnace output, water heater capacity, and heating/cooling load calculations per room. One "ton of refrigeration" = 12,000 BTU/hr ≈ 3.517 kW. Converting BTU/hr to watts is standard when US HVAC equipment is used in metric-labeled markets.
About Horsepower (hp)
An imperial unit of power equal to approximately 745.7 watts, originally defined by James Watt to compare steam-engine output to draft horses pulling coal. Horsepower remains the dominant US unit for car engines, outboard motors, tractors, lawn equipment, and HVAC blowers. A typical sedan has 150–300 hp; a Tesla Model S Plaid has ~1,000 hp. Metric horsepower (PS, CV) is slightly different at 735.5 W — a detail that matters when comparing US-spec vs European-spec engine ratings.
Quick Facts
- 1 BTU per Hour equals 0.000393015 Horsepower
- 1 Horsepower equals 2544.43 BTU per Hour
- BTU per Hour is a unit of power
- Horsepower is a unit of power
- This conversion is commonly used in electrical systems, automotive performance, and HVAC sizing
- The BTU per Hour belongs to the imperial system
Common BTU per Hour to Horsepower Conversions
| BTU per Hour (BTU/hr) | Horsepower (hp) |
|---|---|
| 0.01 | 0.00000393015 |
| 0.1 | 0.0000393015 |
| 0.25 | 0.0000982537 |
| 0.5 | 0.000196507 |
| 1 | 0.000393015 |
| 2 | 0.000786029 |
| 3 | 0.00117904 |
| 5 | 0.00196507 |
| 10 | 0.00393015 |
| 15 | 0.00589522 |
| 20 | 0.00786029 |
| 25 | 0.00982537 |
| 50 | 0.0196507 |
| 75 | 0.0294761 |
| 100 | 0.0393015 |
| 250 | 0.0982537 |
| 500 | 0.196507 |
| 1000 | 0.393015 |
| 5000 | 1.96507 |
| 10000 | 3.93015 |
Understanding BTU per Hour
The BTU per Hour (symbol: BTU/hr) is a unit of power. An imperial unit of power (rate of heat transfer), equal to approximately 0.293 watts. BTU/hr is the dominant unit for US HVAC equipment sizing: air conditioner and heat pump capacity (a 24,000 BTU/hr unit is a "2-ton AC"), furnace output, water heater capacity, and heating/cooling load calculations per room. One "ton of refrigeration" = 12,000 BTU/hr ≈ 3.517 kW. Converting BTU/hr to watts is standard when US HVAC equipment is used in metric-labeled markets.
It belongs to the imperial measurement system.
BTU per Hour are commonly used in electrical systems, automotive performance, and HVAC sizing.
Understanding Horsepower
The Horsepower (symbol: hp) is a unit of power. An imperial unit of power equal to approximately 745.7 watts, originally defined by James Watt to compare steam-engine output to draft horses pulling coal. Horsepower remains the dominant US unit for car engines, outboard motors, tractors, lawn equipment, and HVAC blowers. A typical sedan has 150–300 hp; a Tesla Model S Plaid has ~1,000 hp. Metric horsepower (PS, CV) is slightly different at 735.5 W — a detail that matters when comparing US-spec vs European-spec engine ratings.
It belongs to the imperial measurement system.
Horsepower are commonly used in electrical systems, automotive performance, and HVAC sizing.
Why Convert BTU per Hour to Horsepower?
Power conversions between BTU per Hour and Horsepower are needed in electrical engineering, automotive performance comparison, and HVAC system design. Motor ratings, generator capacities, and appliance specifications are published in different power units depending on the manufacturer and region.
Frequently Asked Questions
How do I convert BTU per Hour to Horsepower?
An imperial unit of power (rate of heat transfer), equal to approximately 0. To convert BTU per Hour to Horsepower, multiply by 3.9301e-4. For example, 25 BTU/hr equals 0.00982537 hp.
How many Horsepower are in 1 BTU per Hour?
There are 0.000393015 Horsepower in 1 BTU per Hour.
How many BTU per Hour are in 1 Horsepower?
There are 2544.43 BTU per Hour in 1 Horsepower.
What is the formula for BTU per Hour to Horsepower conversion?
The formula is: multiply by 3.9301e-4. This means 1 BTU/hr = 0.000393015 hp.
Is a BTU per Hour bigger than a Horsepower?
Yes. One BTU per Hour is larger than one Horsepower because 1 BTU/hr equals 0.000393015 hp, which is less than 1.
When do you need to convert between BTU per Hour and Horsepower?
An imperial unit of power equal to approximately 745. BTU per Hour and Horsepower are both power units, so conversion comes up whenever one source of information uses one unit and another uses the other — a classic cross-reference challenge in engineering, trade, travel, and everyday life.