Kilojoule to Foot-Pound Converter

Energy Converter

27 units available

Decimals:

From

To

737.562149

1 kJ = 737.562149 ft·lbf

Formula:

ft·lbf = kJ × 737.5621492943

With your value: 1 kJ = 737.56214929 ft·lbf

How big is that?

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

Heartbeat (1/1.0e+3 your value)0.00100 kJ

Your value1.00 kJ

AA battery charge (10× your value)10.0 kJ

Slice of bread (2.8e+2× your value)280 kJ

Daily food intake (8.4e+3× your value)8.40e+3 kJ

Litre of petrol (3.4e+4× your value)3.42e+4 kJ

Other Kilojoule to Foot-Pound conversions

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

Kilojoule to Foot-Pound Conversion Table

Kilojoule (kJ)	Foot-Pound (ft·lbf)
0.5	368.781075
1	737.562149
2	1,475.124299
5	3,687.810746
10	7,375.621493
15	11,063.432239
20	14,751.242986
25	18,439.053732
50	36,878.107465
100	73,756.214929
250	184,390.537324
500	368,781.074647
1000	737,562.149294

Foot-Pound to Kilojoule Conversion Table

Foot-Pound (ft·lbf)	Kilojoule (kJ)
0.5	0.000678
1	0.001356
2	0.002712
5	0.006779
10	0.013558
15	0.020337
20	0.027116
25	0.033895
50	0.067791
100	0.135582
250	0.338954
500	0.677909
1000	1.355818

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.

Kilojoule (kJ)

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

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

How to Convert Kilojoule to Foot-Pound

To convert from Kilojoule (kJ) to Foot-Pound (ft·lbf), multiply the value by 737.5621492943.

Formula: ft·lbf = kJ × 737.5621492943

Reverse: kJ = ft·lbf × 0.0013558179

Step-by-Step Example

Start with your value in Kilojoule. For example: 5 kJ
Multiply by the conversion factor: 5 x 737.5621492943
The result is: 3,687.810746 ft·lbf

About Kilojoule

The kilojoule (kJ) is a unit of energy and work. One kilojoule equals 1000 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 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.

Frequently Asked Questions

How many Foot-Pound are in 1 Kilojoule?

There are exactly 737.5621492943 Foot-Pound in 1 Kilojoule. This means the conversion factor from Kilojoule to Foot-Pound is 737.5621492943.

What is the formula to convert Kilojoule to Foot-Pound?

The formula to convert Kilojoule to Foot-Pound is: ft·lbf = kJ × 737.5621492943. For example, to convert 10 Kilojoule to Foot-Pound, you would multiply 10 by 737.5621492943.

What is a Kilojoule?