How many foot-pounds are in one calorie?

1 thermochemical calorie = 3.08596 ft·lbf. This follows from 1 cal = 4.184 J and 1 J = 0.737562 ft·lbf, so 1 cal = 4.184 × 0.737562 ≈ 3.08596 ft·lbf.

How many foot-pounds are in one kilocalorie (food Calorie)?

1 kilocalorie (kcal) = 3,085.96 ft·lbf. A kilocalorie is 1,000 cal, so multiply 3.08596 by 1,000.

What is the conversion formula from calories to foot-pounds?

ft·lbf = cal × 3.08596. For kilocalories: ft·lbf = kcal × 3085.96. To reverse: cal = ft·lbf ÷ 3.08596.

What type of calorie does this tool use?

This tool uses the thermochemical calorie (cal_th), equal to exactly 4.184 joules. This is the standard calorie in chemistry and nutrition. The food Calorie (capital C) is a kilocalorie (kcal = 1000 cal).

When would I need to convert calories to foot-pounds?

This conversion appears in ballistics (propellant energy), mechanical engineering (heat vs. work comparisons), and physics coursework that mixes SI and US customary unit systems.

Is foot-pound the same as pound-foot?

The terms foot-pound (ft·lbf) and pound-foot (lb·ft) describe the same unit magnitude. "Foot-pound" is conventional for energy and work; "pound-foot" is often used for torque in automotive contexts, but the unit size is identical.

Calories to Foot-Pounds Converter

Name: Calories to Foot-Pounds Converter
Availability: InStock
Author: Nham Vu

Enter calories or kilocalories and get the equivalent in foot-pounds (ft·lbf) instantly — with bidirectional conversion and a reference table.

Calories ↔ Foot-Pounds Converter

Calories (cal) — thermochemical

cal

Kilocalories (kcal) — food Calories

kcal

⇅

Foot-Pounds (ft·lbf)

ft·lbf

1 cal = 3.08596 ft·lbf — 1 ft·lbf = 0.32405 cal

Quick Reference Table

Common calorie values in foot-pounds (1 cal = 3.08596 ft·lbf)

Calories (cal)	kcal	ft·lbf

1 cal (thermochemical) = 4.184 J × 0.737562 ft·lbf/J = 3.08596 ft·lbf

Real-world energy references

Lighting a match: ~1 cal (3.09 ft·lbf)
One food Calorie (kcal): 4,184 J = 3,086 ft·lbf of mechanical equivalent
Daily human diet (~2,000 kcal): ~6.17 million ft·lbf of chemical energy
9 mm pistol muzzle energy: ~135 cal (416 ft·lbf)
Burning 1 gram of gasoline: ~11,200 cal (34,560 ft·lbf)

Summary

Enter calories or kilocalories and get the equivalent in foot-pounds (ft·lbf) instantly — with bidirectional conversion and a reference table.

How it works

Enter a value in the Calories (cal) field to see the foot-pound and kilocalorie equivalents.
Enter a value in the Kilocalories (kcal) field to convert food Calories to ft·lbf.
Enter a value in the Foot-Pounds field to reverse-convert back to cal and kcal.
All three fields update simultaneously — no button click required.
Click any row in the reference table to load that value into the converter.

Use cases

Translate food energy (kcal) into mechanical work units for physics or engineering problems.
Verify chemistry lab results that mix calorie-based heat values with imperial force calculations.
Convert combustion energy from cal to ft·lbf for firearms ballistics or propellant studies.
Compare nutritional energy against mechanical work references in US customary units.
Cross-check thermochemical data between SI and imperial unit systems.

Frequently Asked Questions

Last updated: 2026-07-23 · Reviewed by Nham Vu