Convert Pound-force Feet to Kilogram-force Meters
Pound-force Foot (lbf·ft) to Kilogram-force Meter (kgf·m) unit conversion — enter any value below to get an instant result, or use the table for common values.
Results from this calculator are estimates provided for general informational purposes only, based on formulas, rates, and standards commonly accepted as of 2026. Figures may differ slightly from other calculators or professional sources due to rounding methods, differing assumptions, or regional regulations, and rules may change over time. Always consult a qualified professional — such as a financial advisor, healthcare provider, or other relevant specialist — before making decisions based on these results.
Result
1 lbf·ft = 0.13825495 kgf·m
1 Pound-force Foot = 0.13825495 Kilogram-force Meters
1 Kilogram-force Meter = 7.2330139 Pound-force Feet
1 lbf·ft in every supported unit
Conversion chart: Pound-force Foot to Kilogram-force Meters
Conversion table
| Pound-force Foot (lbf·ft) | Kilogram-force Meter (kgf·m) |
|---|---|
| 0.01 lbf·ft | 0.0013825495 kgf·m |
| 0.1 lbf·ft | 0.013825495 kgf·m |
| 1 lbf·ft | 0.13825495 kgf·m |
| 2 lbf·ft | 0.27650991 kgf·m |
| 3 lbf·ft | 0.41476486 kgf·m |
| 5 lbf·ft | 0.69127477 kgf·m |
| 10 lbf·ft | 1.3825495 kgf·m |
| 20 lbf·ft | 2.7650991 kgf·m |
| 50 lbf·ft | 6.9127477 kgf·m |
| 100 lbf·ft | 13.825495 kgf·m |
| 1000 lbf·ft | 138.25495 kgf·m |
Pound-force Foot (lbf·ft)
Definition: The US customary structural moment unit, equal to the turning effect of a 1-pound-force applied 1 foot from the pivot — the standard bending moment unit in American structural engineering.
History: Built from the pound-force and foot units codified in the English Engineering System, used throughout US building codes and structural design manuals since the 19th and 20th centuries.
Current use: The standard unit for beam and column bending moments, connection design moments, and structural capacity ratings in American building codes such as the AISC steel and ACI concrete design manuals.
Kilogram-force Meter (kgf·m)
Definition: A gravitational-system moment unit equal to the turning effect produced by the weight of a 1-kilogram mass (kilogram-force) applied 1 meter from the pivot.
History: Part of the older "technical" metric system used across continental Europe before SI's full adoption, where moments — like forces — were defined against a standard weight rather than derived abstractly through Newton's second law.
Current use: Occasionally still seen in legacy European structural drawings, mechanical handbooks, and older equipment ratings, though newton meter is now the required SI unit in modern structural codes.
Supported Units
| Unit | Symbol | In Newton Meters |
|---|---|---|
| Newton Meter | N·m | 1 N·m |
| Newton Centimeter | N·cm | 0.01 N·m |
| Newton Millimeter | N·mm | 0.001 N·m |
| Kilonewton Meter | kN·m | 1000 N·m |
| Kilogram-force Meter | kgf·m | 9.80665 N·m |
| Kilogram-force Centimeter | kgf·cm | 0.0980665 N·m |
| Pound-force Foot | lbf·ft | 1.3558179 N·m |
| Pound-force Inch | lbf·in | 0.11298483 N·m |
| Ounce-force Inch | ozf·in | 0.0070615518 N·m |
| Dyne Centimeter | dyn·cm | 1E-07 N·m |
About These Parameters
- Value
- The number you want to convert, expressed in the "From" unit. Accepts decimals.
- From Unit
- The moment of force unit your input value is currently measured in.
- To Unit
- The moment of force unit you want the result converted into. Use the swap button to flip From and To instantly.
How Moment of Force Conversion Works
The Formula
Every unit here is defined by a fixed multiplier relative to the newton meter. To convert a value from one unit to another:
result = value × (factor of "From" unit ÷ factor of "To" unit)
For Pound-force Foot → Kilogram-force Meter: multiply by 0.13825495. For example, 1 lbf·ft × 0.13825495 = 0.13825495 kgf·m.
Bending Moments in Beams and Structures
When a load is applied to a beam, it doesn't just push straight down — it creates an internal bending moment that varies along the beam's length, largest typically at mid-span or at a fixed support. Structural engineers calculate this moment (force × lever-arm distance) at every critical section and compare it against the beam or connection's moment capacity, which depends on the material's strength and the cross-section's geometry. Getting this comparison right is the central task of beam and frame design: too little capacity and the member yields or fractures; too much and the design wastes material and cost.
Moment vs. Torque: Same Physics, Different Context
Moment of force and torque share the exact same units and the same underlying formula (force × distance), but engineering convention reserves "moment" for bending and rotational-equilibrium problems in stationary structures — beams, columns, connections, foundations — and "torque" for twisting effects on rotating shafts, engines, and fasteners. There's no physical difference between a "1 N·m moment" and a "1 N·m torque"; the distinction is purely about which kind of problem an engineer is solving, which is why this site offers a separate Torque Converter for the rotational-drivetrain use case.
Example
1 lbf·ft equals 0.13825495 kgf·m. For scale, a mid-span bending moment of 15,000 N·m (about 11063.432 lbf·ft) is a realistic design value for a modest residential floor beam spanning several meters under normal loading — well within a typical steel or engineered-lumber section's capacity.
Frequently Asked Questions
How many Kilogram-force Meters are in 1 Pound-force Foot?
1 Pound-force Foot (lbf·ft) equals exactly 0.13825495 Kilogram-force Meters (kgf·m).
What's the difference between moment of force and torque?
Physically, nothing — both are force multiplied by lever-arm distance, measured in the same units (newton meters or pound-force feet). "Moment" is the conventional term in structural and civil engineering for bending effects in beams, columns, and connections, while "torque" is the conventional term for twisting effects in rotating machinery like engines and fasteners.
Why do structural engineers use kilonewton meters instead of newton meters?
Real building and bridge bending moments routinely reach into the tens or hundreds of thousands of newton meters. Reporting "45,000 N·m" is unwieldy compared to "45 kN·m", so kilonewton meters keep structural calculation sheets and drawings readable, the same reasoning that leads American engineers to prefer kips over pounds-force for large loads.
How accurate are these conversions?
Every conversion factor used here is the exact, internationally recognized value (e.g. 1 lbf·ft = exactly 1.3558179483314 N·m, derived from the internationally standardized pound, foot, and standard gravity) — results are limited only by floating-point display precision, not by rounded conversion constants.