Foot-Pound to Calorie (th) Converter

Energy Converter

27 units available

Decimals:

From

To

0.324048

1 ft·lbf = 0.324048 cal

Formula:

cal = ft·lbf × 0.3240482668

With your value: 1 ft·lbf = 0.32404827 cal

How big is that?

Everyday references on a logarithmic scale, all expressed in foot-pound so you can sanity-check the result.

Heartbeat (1/1.4 your value)0.738 ft·lbf

Your value1.00 ft·lbf

AA battery charge (7.4e+3× your value)7.38e+3 ft·lbf

Slice of bread (2.1e+5× your value)2.07e+5 ft·lbf

Daily food intake (6.2e+6× your value)6.20e+6 ft·lbf

Litre of petrol (2.5e+7× your value)2.52e+7 ft·lbf

Other Foot-Pound to Calorie (th) conversions

2 ft·lbf to cal 3 ft·lbf to cal 4 ft·lbf to cal 5 ft·lbf to cal 6 ft·lbf to cal 7 ft·lbf to cal 8 ft·lbf to cal

Foot-Pound to Calorie (th) Conversion Table

Foot-Pound (ft·lbf)	Calorie (th) (cal)
0.5	0.162024
1	0.324048
2	0.648097
5	1.620241
10	3.240483
15	4.860724
20	6.480965
25	8.101207
50	16.202413
100	32.404827
250	81.012067
500	162.024133
1000	324.048267

Calorie (th) to Foot-Pound Conversion Table

Calorie (th) (cal)	Foot-Pound (ft·lbf)
0.5	1.54298
1	3.08596
2	6.17192
5	15.4298
10	30.8596
15	46.2894
20	61.719201
25	77.149001
50	154.298002
100	308.596003
250	771.490008
500	1,542.980016
1000	3,085.960033

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Foot-Pound (ft·lbf)

Energy

Exact conversion

Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

Calorie (th) (cal)

Energy

Exact conversion

The thermochemical calorie is exactly 4.184 J.

The International Table calorie (4.1868 J) and the 15 °C calorie differ slightly.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

How to Convert Foot-Pound to Calorie (th)

To convert from Foot-Pound (ft·lbf) to Calorie (th) (cal), multiply the value by 0.3240482668.

Formula: cal = ft·lbf × 0.3240482668

Reverse: ft·lbf = cal × 3.0859600326

Step-by-Step Example

Start with your value in Foot-Pound. For example: 5 ft·lbf
Multiply by the conversion factor: 5 x 0.3240482668
The result is: 1.620241 cal

About Foot-Pound

The foot-pound (ft·lbf) is a unit of energy and work. One foot-pound equals 1.355817948 joules. UnitConvertLab converts it against every other energy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: energy calculations, engineering and science, education.

About Calorie (th)

The thermochemical calorie equals 4.184 joules. Not to be confused with the food Calorie (kcal), which equals 1,000 calories.

Common uses: chemistry, nutrition, heating.

Frequently Asked Questions

How many Calorie (th) are in 1 Foot-Pound?

There are exactly 0.3240482668 Calorie (th) in 1 Foot-Pound. This means the conversion factor from Foot-Pound to Calorie (th) is 0.3240482668.

What is the formula to convert Foot-Pound to Calorie (th)?

The formula to convert Foot-Pound to Calorie (th) is: cal = ft·lbf × 0.3240482668. For example, to convert 10 Foot-Pound to Calorie (th), you would multiply 10 by 0.3240482668.

What is a Foot-Pound?