Foot-pounds to Calories Converter
One Foot-pound equals 0.3240482668 Calories (1 ft-lb = 0.3240482668 cal). Multiply a Foot-pound value by 0.3240482668 to get the equivalent in Calories. Use the calculator above for your value, or check the examples and reference table below.
Formula
cal = ft-lb × 0.3240482668
Multiply the Foot-pound value by 0.3240482668 to get the equivalent value in Calories.
Example Conversions
1 Foot-pound (ft-lb)
0.3240482668 Calorie (cal)
5 Foot-pound (ft-lb)
1.620241334 Calorie (cal)
10 Foot-pound (ft-lb)
3.240482668 Calorie (cal)
25 Foot-pound (ft-lb)
8.10120667 Calorie (cal)
100 Foot-pound (ft-lb)
32.40482668 Calorie (cal)
Conversion Table
| Foot-pound (ft-lb) | Calorie (cal) |
|---|---|
| 0.1 | 0.03240482668 |
| 0.5 | 0.1620241334 |
| 1 | 0.3240482668 |
| 2 | 0.6480965336 |
| 5 | 1.620241334 |
| 10 | 3.240482668 |
| 25 | 8.10120667 |
| 50 | 16.20241334 |
| 100 | 32.40482668 |
| 250 | 81.0120667 |
| 500 | 162.0241334 |
| 1000 | 324.0482668 |
How to Convert Manually
Use these steps to convert Foot-pound values to Calorie without the calculator.
- Write down the value in Foot-pound (ft-lb) that you want to convert.
- Multiply that value by 0.3240482668.
- For example, 10 Foot-pounds × 0.3240482668 = 3.240482668 Calories.
- Label the result as Calorie (cal).
Relative Size Comparison
This chart shows the visual difference in size between exactly one Foot-pound and one Calorie.
About Foot-pound and Calorie
The foot-pound is about 1.3558 joules, the work of one pound-force through one foot. US mechanical engineering and firearm muzzle energy use foot-pounds. The calorie (small calorie) is exactly 4.184 joules under the thermochemical convention. It originally described the heat to warm one gram of water by 1 °C. Chemistry uses it; food 'Calories' are actually kilocalories. One Foot-pound equals 0.3240482668 Calories (1 ft-lb = 0.3240482668 cal). Foot-pound is used in US mechanical engineering and in firearm muzzle energy. Calorie is used in chemistry heat calculations.
Precision and Rounding:Energy factors mix exact definitions (1 kWh = 3,600,000 J; 1 cal = 4.184 J thermochemical) with measured conventions (1 BTU ≈ 1,055.056 J). Nutrition and utility bills round to whole units; engineering heat calculations should keep the full factor until the final step.
Conversion factors per NIST Special Publication 811 and the BIPM SI Brochure (9th edition) (reference).
Worked Example
15Foot-pounds equals4.860724002Calories.
15 ft-lb × 0.3240482668 = 4.860724002 cal
FAQ
How do I convert Foot-pound to Calorie?
Multiply the Foot-pound value by 0.3240482668 to get the equivalent value in Calories.
What is the formula for Foot-pound to Calorie?
The formula is cal = ft-lb × 0.3240482668.
How many Calories are in 1 Foot-pound?
1 Foot-pound equals 0.3240482668 Calories.
Can I convert Calorie back to Foot-pound?
Yes. 1 Calorie equals 3.085960033 Foot-pounds, and the related converter can reverse the calculation.
What are common names for Foot-pound and Calorie?
Foot-pound is shown as ft-lb and may also be searched as foot-pound, foot pound, ft·lb. Calorie is shown as cal and may also be searched as calorie, calories, small calorie.
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