AI Unit Converters
v1.0

Foot-pound to Kilojoule Converter

1 Foot-pound is equal to 0.001356Kilojoules (kJ). To convert foot-pounds to kilojoules, multiply the value by 0.001356 or use the interactive formula breakdown and reference tables below.

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Step-by-Step Mathematical Derivation

Verified SI Standard
➡️ Convert Foot-pound to Kilojoule
Value in kJ = Value in ft·lbf × 0.001355818

To convert any quantity from Foot-pound to Kilojoule, multiply the quantity by the constant conversion factor 0.001355818.

⬅️ Convert Kilojoule to Foot-pound (Inverse)
Value in ft·lbf = Value in kJ × 737.5621

To reverse the operation, multiply your Kilojoule figure by 737.5621 (or divide by 0.001355818).

🔢 Step-by-Step Calculation Procedure:
  1. Identify the starting value in Foot-pound (ft·lbf).
  2. Apply the exact linear conversion factor: 1 ft·lbf = 0.001355818 kJ.
  3. Multiply the input value by 0.001355818 to obtain the exact measurement in Kilojoule (kJ).
  4. Verify precision against standard BIPM / NIST SP 811 statutory guidelines.
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All-Units Instant Matrix

Live Computed
Joule --
J
Kilojoule --
kJ
Gram Calorie --
cal
Kilocalorie (Food Cal) --
kcal
Kilowatt-hour --
kWh
British Thermal Unit --
BTU
Electronvolt --
eV
Foot-pound --
ft·lbf
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Printable Reference Cheat Sheet

Generate clean offline reference PDF tables for Energy & Work

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Academic & Research Citation Exporter

Cite this mathematical formula and conversion factor in research papers and wikis

BibTeX / APA / IEEE 
@misc{ai_unit_converter_foot-pound_to_kilojoule,
  author       = {AI Unit Converters Standards Board},
  title        = {Exact Foot-pound to Kilojoule Conversion Factor and Mathematical Derivation},
  year         = {2026},
  howpublished = {\url{https://aiunitconverters.com/energy/ft_lb-to-kj}},
  note         = {Derived from NIST Special Publication 811 and BIPM SI Brochure}
}

📊Foot-pound to Kilojoule Conversion Tables

Foot-pounds (ft·lbf)Kilojoules (kJ)
1ft·lbf0.0014kJ
2ft·lbf0.0027kJ
5ft·lbf0.0068kJ
10ft·lbf0.0136kJ
15ft·lbf0.0203kJ
20ft·lbf0.0271kJ
25ft·lbf0.0339kJ
50ft·lbf0.0678kJ
75ft·lbf0.1017kJ
100ft·lbf0.1356kJ
250ft·lbf0.339kJ
500ft·lbf0.6779kJ
1000ft·lbf1.3558kJ
5000ft·lbf6.7791kJ
10000ft·lbf13.5582kJ
Kilojoules (kJ)Foot-pounds (ft·lbf)
1kJ737.5621ft·lbf
2kJ1,475.1243ft·lbf
5kJ3,687.8107ft·lbf
10kJ7,375.6215ft·lbf
15kJ11,063.4322ft·lbf
20kJ14,751.243ft·lbf
25kJ18,439.0537ft·lbf
50kJ36,878.1075ft·lbf
75kJ55,317.1612ft·lbf
100kJ73,756.2149ft·lbf
250kJ184,390.5373ft·lbf
500kJ368,781.0746ft·lbf
1000kJ737,562.1493ft·lbf
5000kJ3,687,810.7464ft·lbf
10000kJ7,375,621.4928ft·lbf
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❓ Frequently Asked Questions: Foot-pound to Kilojoule

How do you convert Foot-pounds to Kilojoules?▼

1 Foot-pound is equal to 0.001356 Kilojoules. Multiply your input value in Foot-pounds by 0.001356 to obtain the exact equivalent in Kilojoules.

How many Kilojoules are in 1 Foot-pound?▼

There are exactly 0.001356Kilojoules (kJ) in 1 Foot-pound (ft·lbf).

Are these calculations calibrated against official measurement standards?▼

Yes. All conversion factors on AI Unit Converters are calibrated and cross-verified against official BIPM SI Brochure (9th Edition), NIST SP 811, and ISO 80000 measurement metrology standards.

Related energy Converters

Foot-pound to JouleFoot-pound to KilojouleFoot-pound to Gram CalorieFoot-pound to Kilocalorie (Food Cal)Foot-pound to Kilowatt-hourFoot-pound to British Thermal UnitFoot-pound to Electronvolt