Foot-Pound Converter - Free Online Calculator
Foot-Pound Converter - Convert Energy and Torque Units
Our foot-pound converter helps you convert energy and torque units easily. Convert foot-pounds to joules, newton-meters, BTU, calories, and more with accurate results.
Foot-Pound Energy Converter Calculator
Conversion Result:
1 ft-lb = 1.35582 joules
Formula: Result = Input × Conversion Factor
What is a Foot-Pound?
Foot-Pound Energy
A foot-pound is a unit of energy. It measures how much work is done when you apply one pound of force over one foot of distance. This foot-pound converter helps you change these energy values to other units like joules or BTU.
Engineers and scientists use foot-pounds to measure energy in many projects. Our foot-pound calculator makes these conversions quick and easy.
Foot-Pound Torque
Foot-pounds also measure torque or twisting force. When you tighten a bolt, the torque is often measured in foot-pounds. This foot-pound converter can help you convert torque values too.
Mechanics use foot-pound torque specs for car repairs. Our converter helps you change between foot-pounds and newton-meters easily.
How Our Foot-Pound Converter Works
Choose Units
Pick your starting unit and target unit for conversion
Enter Value
Type the foot-pound value you want to convert
Get Result
See your converted value instantly
Common Foot-Pound Conversions
Foot-Pounds to Joules
1 ft·lb = 1.35582 joules
10 ft·lb = 13.5582 joules
50 ft·lb = 67.791 joules
100 ft·lb = 135.582 joules
Foot-Pounds to Newton-Meters
1 ft·lb = 1.35582 N·m
25 ft·lb = 33.8955 N·m
75 ft·lb = 101.687 N·m
200 ft·lb = 271.164 N·m
| Foot-Pounds | Joules | Newton-Meters | BTU |
|---|---|---|---|
| 1 | 1.356 | 1.356 | 0.001285 |
| 5 | 6.779 | 6.779 | 0.006425 |
| 10 | 13.558 | 13.558 | 0.012851 |
| 25 | 33.895 | 33.895 | 0.032127 |
| 50 | 67.791 | 67.791 | 0.064253 |
| 75 | 101.686 | 101.686 | 0.096380 |
| 100 | 135.582 | 135.582 | 0.128506 |
| 150 | 203.373 | 203.373 | 0.192760 |
| 200 | 271.164 | 271.164 | 0.257013 |
| 250 | 338.955 | 338.955 | 0.321266 |
| 500 | 677.910 | 677.910 | 0.642532 |
| 750 | 1016.865 | 1016.865 | 0.963798 |
| 1000 | 1355.820 | 1355.820 | 1.285064 |
Foot-Pound Conversion Practice Problems
Problem 1: Basic Conversion
Convert 25 foot-pounds to joules
Solution: 25 × 1.35582 = 33.8955 joules
Problem 2: Torque Conversion
Convert 80 ft·lb torque to newton-meters
Solution: 80 × 1.35582 = 108.466 N·m
Problem 3: Energy Calculation
How many BTU is 150 foot-pounds?
Solution: 150 × 1.35582 ÷ 1055.06 = 0.193 BTU
Problem 4: Reverse Conversion
Convert 500 joules to foot-pounds
Solution: 500 ÷ 1.35582 = 368.78 ft·lb
Problem 5: Large Values
Convert 1000 foot-pounds to calories
Solution: 1000 × 1.35582 ÷ 4.184 = 324.16 calories
Problem 6: Practical Example
A bolt needs 65 ft·lb torque. What is this in N·m?
Solution: 65 × 1.35582 = 88.13 N·m
When Do You Need a Foot-Pound Converter?
Car Maintenance
Mechanics use foot-pound torque specs when tightening bolts. Our foot-pound converter helps change these values to newton-meters for metric tools.
Engineering Projects
Engineers need to convert foot-pound energy values to joules for calculations. This foot-pound calculator makes the math quick and accurate.
Physics Studies
Students learning about energy often need to convert between foot-pounds and joules. Our converter helps with homework and lab work.
Construction Work
Construction workers use foot-pound torque values for structural bolts. The converter helps when working with international standards.
Manufacturing
Factory workers need precise torque values in different units. Our foot-pound converter ensures proper assembly specifications.
Research Labs
Scientists measure energy in various units. This foot-pound energy converter helps standardize measurements for reports.
Frequently Asked Questions
What is the difference between foot-pound energy and foot-pound torque?
Foot-pound energy measures work done, while foot-pound torque measures rotational force. Both use the same units but measure different things. Our foot-pound converter works for both.
How accurate is this foot-pound calculator?
Our foot-pound converter uses precise conversion factors. The results are accurate to 6 decimal places, which is more than enough for most uses.
Can I convert foot-pounds to other energy units?
Yes! Our foot-pound energy converter supports joules, BTU, calories, watt-hours, and more. Just select your desired units from the dropdown menus.
Is this foot-pound converter free to use?
Yes, our foot-pound calculator is completely free. You can use it as many times as you need without any cost or registration.
Tips for Using the Foot-Pound Converter
Conversion Tips
- • Always double-check your input values before converting
- • Remember that 1 foot-pound equals 1.35582 joules exactly
- • Use our foot-pound calculator for quick and accurate results
- • The converter works for both energy and torque measurements
Common Mistakes
- • Don't confuse foot-pounds with pound-feet (they're the same)
- • Make sure you're using the right unit type (energy vs torque)
- • Check if your tools use metric or imperial units
- • Always verify critical torque specs with official manuals
Save Your Foot-Pound Conversions
Save your foot-pound conversion results for future reference. Perfect for keeping track of torque specs or energy calculations.
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Dr. Jane Doe
VerifiedExpert Reviewer & Mathematician
Last Updated: May 19, 2026