BTU per Hour to Foot-pound per Minute Converter
Convert BTU/h to ft⋅lb/min with our free online power converter.
Quick Answer
1 BTU per Hour = 12.969488 ft⋅lb/min
Formula: BTU per Hour × conversion factor = Foot-pound per Minute
Use the calculator below for instant, accurate conversions.
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All conversion formulas on UnitsConverter.io have been verified against NIST (National Institute of Standards and Technology) guidelines and international SI standards. Our calculations are accurate to 10 decimal places for standard conversions and use arbitrary precision arithmetic for astronomical units.
BTU per Hour to Foot-pound per Minute Calculator
How to Use the BTU per Hour to Foot-pound per Minute Calculator:
- Enter the value you want to convert in the 'From' field (BTU per Hour).
- The converted value in Foot-pound per Minute will appear automatically in the 'To' field.
- Use the dropdown menus to select different units within the Power category.
- Click the swap button (⇌) to reverse the conversion direction.
How to Convert BTU per Hour to Foot-pound per Minute: Step-by-Step Guide
Converting BTU per Hour to Foot-pound per Minute involves multiplying the value by a specific conversion factor, as shown in the formula below.
Formula:
ft⋅lb/min = BTU/h × 12.9695Example Calculation:
1 BTU/h = 12.969488 ft⋅lb/min
Disclaimer: For Reference Only
These conversion results are provided for informational purposes only. While we strive for accuracy, we make no guarantees regarding the precision of these results, especially for conversions involving extremely large or small numbers which may be subject to the inherent limitations of standard computer floating-point arithmetic.
Not for professional use. Results should be verified before use in any critical application. View our Terms of Service for more information.
Need to convert to other power units?
View all Power conversions →What is a BTU per Hour and a Foot-pound per Minute?
1 BTU/h = 0.293 W = 0.000293 kW
Key equivalents:
- 3,412 BTU/h = 1 kW
- 12,000 BTU/h = 1 ton of refrigeration = 3.52 kW
- 1 BTU/h = 0.2931 W
1 ft⋅lbf/min = 0.0226 W = 0.0000226 kW = 0.00003 hp = 0.0771 BTU/h
Horsepower relationship: 33,000 ft⋅lbf/min = 1 hp (745.7 W) exactly
Note: The BTU per Hour is part of the imperial/US customary system, primarily used in the US, UK, and Canada for everyday measurements. The Foot-pound per Minute belongs to the imperial/US customary system.
Common Uses and Applications: BTU/h vs ft⋅lb/min
Explore the typical applications for both BTU per Hour (imperial/US) and Foot-pound per Minute (imperial/US) to understand their common contexts.
Common Uses for BTU/h
Air Conditioning: Window units (5,000-18,000 BTU/h), central systems (18,000-60,000 BTU/h). Furnaces: Home heating (40,000-150,000 BTU/h input). Water Heaters: Gas water heaters (30,000-50,000 BTU/h). HVAC Design: Load calculations, equipment sizing, ductwork design.
When to Use ft⋅lb/min
Historical: Original horsepower definition (Watt, 1780s). Engineering Education: Teaching power unit derivations. Rarely Used: Impractically small for modern applications. Conversion Reference: Link between hp and ft⋅lbf/s.
Additional Unit Information
About BTU per Hour (BTU/h)
How many BTU/h do I need for air conditioning?
Basic calculation: Room square footage × 20-25 BTU/h
Adjustments:
- Sunny room: Add 10%
- Shaded room: Subtract 10%
- Kitchen: Add 4,000 BTU/h
- More than 2 people: Add 600 BTU/h per person
- High ceilings (>8 ft): Add 10-20%
Examples:
- 200 sq ft bedroom: 4,000-5,000 BTU/h (5,000 BTU window unit)
- 400 sq ft living room: 8,000-10,000 BTU/h (10,000 BTU window unit)
- 1,500 sq ft home: 30,000-36,000 BTU/h (2.5-3 ton central AC)
[BTU/h calculator for HVAC sizing]
How do I convert BTU/h to watts or kW?
Formula:
- Watts = BTU/h × 0.293
- kW = BTU/h ÷ 3,412
Examples:
- 12,000 BTU/h = 3,517 W = 3.52 kW (1 ton AC)
- 24,000 BTU/h = 7,034 W = 7.03 kW (2 ton AC)
- 10,000 BTU/h = 2,930 W = 2.93 kW (window unit)
- 1,000 BTU/h = 293 W
BTU/h to Watts converter → BTU/h to kW converter →
What is the difference between BTU and BTU/h?
BTU = Energy (total heat/cooling) BTU/h = Power (rate of heating/cooling)
Analogy:
- BTU = distance traveled (miles)
- BTU/h = speed (miles per hour)
Example:
- A 10,000 BTU/h air conditioner removes 10,000 BTU of heat per hour
- Running for 3 hours removes 30,000 BTU total
Always use BTU/h when rating HVAC equipment capacity!
How many BTU/h equals 1 ton of refrigeration?
1 ton = 12,000 BTU/h = 3.52 kW
Origin: Based on melting 1 ton (2,000 lbs) of ice in 24 hours
Common AC sizes:
- 1 ton = 12,000 BTU/h (small rooms, ~400-600 sq ft)
- 1.5 tons = 18,000 BTU/h (larger rooms, ~600-900 sq ft)
- 2 tons = 24,000 BTU/h (small homes, ~900-1,200 sq ft)
- 2.5 tons = 30,000 BTU/h (medium homes, ~1,200-1,500 sq ft)
- 3 tons = 36,000 BTU/h (larger homes, ~1,500-1,800 sq ft)
- 4 tons = 48,000 BTU/h (large homes, ~2,000-2,400 sq ft)
- 5 tons = 60,000 BTU/h (very large homes, ~2,400-3,000 sq ft)
How efficient is my furnace or AC?
Furnace efficiency (AFUE):
- Old furnace: 60-70% AFUE
- Standard: 80% AFUE (80,000 BTU/h input → 64,000 BTU/h heat output)
- High-efficiency: 90-98% AFUE
AC efficiency (SEER):
- Old AC: SEER 8-10 (inefficient)
- Standard: SEER 13-14 (minimum new units)
- High-efficiency: SEER 16-20
- Ultra-high: SEER 20-26
EER (Energy Efficiency Ratio) = BTU/h output ÷ watts input
- Good window AC: EER 10-12
- Excellent: EER 12+
About Foot-pound per Minute (ft⋅lb/min)
How do I convert ft⋅lbf/min to horsepower?
Formula: hp = ft⋅lbf/min ÷ 33,000
Examples:
- 33,000 ft⋅lbf/min = 1 hp (exact)
- 16,500 ft⋅lbf/min = 0.5 hp
- 66,000 ft⋅lbf/min = 2 hp
- 330,000 ft⋅lbf/min = 10 hp
How do I convert ft⋅lbf/min to ft⋅lbf/s?
Formula: ft⋅lbf/s = ft⋅lbf/min ÷ 60
Examples:
- 60 ft⋅lbf/min = 1 ft⋅lbf/s
- 600 ft⋅lbf/min = 10 ft⋅lbf/s
- 33,000 ft⋅lbf/min = 550 ft⋅lbf/s = 1 hp
ft⋅lbf/min to ft⋅lbf/s converter →
Why 33,000 ft⋅lbf/min for 1 hp?
James Watt's experiment (1780s):
Observation: Draft horses in coal mines
- Work rate: Lifting ~22,000 lb⋅ft/min (typical horse)
- Watt's definition: 33,000 ft⋅lbf/min (50% above average)
- Marketing: Sell steam engines rated conservatively vs horses
Calculation:
- 33,000 ft⋅lbf/min ÷ 60 = 550 ft⋅lbf/s
- 550 ft⋅lbf/s × 1.356 = 745.7 W (modern equivalent)
Persists: Still defines horsepower 240+ years later!
How do I calculate power in ft⋅lbf/min?
Formula: Power (ft⋅lbf/min) = Force (lbf) × Distance per minute (ft/min)
Examples:
- Lifting 100 lb at 10 ft/min: 1,000 ft⋅lbf/min = 0.03 hp = 22.6 W
- Winch pulling 500 lb at 20 ft/min: 10,000 ft⋅lbf/min = 0.3 hp = 226 W
- Elevator lifting 2,000 lb at 100 ft/min: 200,000 ft⋅lbf/min = 6.06 hp = 4.52 kW
Modern practice: Convert to hp or kW for practical use.
Conversion Table: BTU per Hour to Foot-pound per Minute
| BTU per Hour (BTU/h) | Foot-pound per Minute (ft⋅lb/min) |
|---|---|
| 0.5 | 6.485 |
| 1 | 12.97 |
| 1.5 | 19.454 |
| 2 | 25.939 |
| 5 | 64.847 |
| 10 | 129.695 |
| 25 | 324.237 |
| 50 | 648.474 |
| 100 | 1,296.949 |
| 250 | 3,242.372 |
| 500 | 6,484.744 |
| 1,000 | 12,969.488 |
People Also Ask
How do I convert BTU per Hour to Foot-pound per Minute?
To convert BTU per Hour to Foot-pound per Minute, enter the value in BTU per Hour in the calculator above. The conversion will happen automatically. Use our free online converter for instant and accurate results. You can also visit our power converter page to convert between other units in this category.
Learn more →What is the conversion factor from BTU per Hour to Foot-pound per Minute?
The conversion factor depends on the specific relationship between BTU per Hour and Foot-pound per Minute. You can find the exact conversion formula and factor on this page. Our calculator handles all calculations automatically. See the conversion table above for common values.
Can I convert Foot-pound per Minute back to BTU per Hour?
Yes! You can easily convert Foot-pound per Minute back to BTU per Hour by using the swap button (⇌) in the calculator above, or by visiting our Foot-pound per Minute to BTU per Hour converter page. You can also explore other power conversions on our category page.
Learn more →What are common uses for BTU per Hour and Foot-pound per Minute?
BTU per Hour and Foot-pound per Minute are both standard units used in power measurements. They are commonly used in various applications including engineering, construction, cooking, and scientific research. Browse our power converter for more conversion options.
For more power conversion questions, visit our FAQ page or explore our conversion guides.
Helpful Conversion Guides
Learn more about unit conversion with our comprehensive guides:
📚 How to Convert Units
Step-by-step guide to unit conversion with practical examples.
🔢 Conversion Formulas
Essential formulas for power and other conversions.
⚖️ Metric vs Imperial
Understand the differences between measurement systems.
⚠️ Common Mistakes
Learn about frequent errors and how to avoid them.
All Power Conversions
Other Power Units and Conversions
Explore other power units and their conversion options:
- Watt (W) • BTU per Hour to Watt
- Milliwatt (mW) • BTU per Hour to Milliwatt
- Kilowatt (kW) • BTU per Hour to Kilowatt
- Megawatt (MW) • BTU per Hour to Megawatt
- Gigawatt (GW) • BTU per Hour to Gigawatt
- Horsepower (hp) • BTU per Hour to Horsepower
- Metric Horsepower (PS) • BTU per Hour to Metric Horsepower
- Electric Horsepower (hp(E)) • BTU per Hour to Electric Horsepower
- BTU per Minute (BTU/min) • BTU per Hour to BTU per Minute
- BTU per Second (BTU/s) • BTU per Hour to BTU per Second
Verified Against Authority Standards
All conversion formulas have been verified against international standards and authoritative sources to ensure maximum accuracy and reliability.
National Institute of Standards and Technology — Fundamental physical constants and unit conversions
Bureau International des Poids et Mesures — International System of Units (SI) definitions and standards
International Organization for Standardization — Quantities and units international standards series
Last verified: December 3, 2025