Convert Foot-pounds-force to Kilonewton-meters
Instantly convert Foot-pounds-force (ft·lbf) to Kilonewton-meters (kN·m) with our free online calculator.
Formula: ft·lbf to kN·m — multiply by 0.00135582
Reference Table
| Foot-pounds-force (ft·lbf) | Kilonewton-meters (kN·m) |
|---|---|
| 1 | 0.00135582 |
| 5 | 0.0067791 |
| 10 | 0.0135582 |
| 25 | 0.0338955 |
| 50 | 0.067791 |
| 100 | 0.135582 |
How to Convert Foot-pounds-force to Kilonewton-meters
Formula
To convert Foot-pounds-force (ft·lbf) to Kilonewton-meters (kN·m): multiply by 0.00135582
Step-by-Step
- Start with your value in Foot-pounds-force (ft·lbf).
- Multiply by 0.00135582 to perform the conversion.
- The result is your value expressed in Kilonewton-meters (kN·m).
Conversion Factor
1 ft·lbf = 0.00135582 kN·m
Reverse Factor
1 kN·m = 737.561 ft·lbf
Worked Example
Convert 25 Foot-pounds-force to Kilonewton-meters: 25 ft·lbf = 0.0338955 kN·m
About Foot-pound-force (ft·lbf)
An imperial unit of torque equal to one pound-force applied at a one-foot lever arm (≈ 1.35582 N·m per NIST SP 811). Foot-pounds are the dominant US working unit for torque in automotive, industrial, and trades work: vehicle service manuals (passenger-car wheel-lug torque 80-100 ft·lbf; light-truck 130-160 ft·lbf; semi-truck 450-500 ft·lbf), automotive engine peak-torque specifications (US passenger cars typically 130-400 ft·lbf; full-size pickup diesel 800-1,000 ft·lbf; Dodge Challenger Hellcat Redeye 707 ft·lbf), US-made torque-wrench scales (Snap-On, Mac, Matco), helicopter and small-aircraft propeller/prop-strike inspection criteria, ASME B16 flange-bolt torque tables, and firearms barrel-threading specifications. Critical engineer's-eye distinction: ft·lbf as TORQUE (a vector moment) is dimensionally identical to ft·lb as ENERGY (a scalar work integral) — both are pound-force × foot — but they describe different physical quantities and must not be conflated when balancing power equations. Convert ft·lbf to N·m by multiplying by 1.356; to in·lbf by multiplying by 12.
About Kilonewton-meter (kN·m)
A metric unit of torque/moment equal to exactly 1,000 newton-meters. Kilonewton-meters are the working unit for large-scale rotational and structural loads: industrial steam and gas turbines (a typical 100 MW power-station turbine produces ~250-500 kN·m at the rotor), large marine diesel engines for ship propulsion (a Wärtsilä Sulzer RTA96-C two-stroke produces ~7,600 kN·m at 102 rpm — the highest sustained torque of any production engine), locomotive traction (~300-800 kN·m starting torque from electric/diesel-electric locomotives), wind-turbine main-shaft torque (a modern 5 MW onshore turbine ~3,800 kN·m, 15 MW offshore Haliade-X ~9,000 kN·m), and structural-bending moments on reinforced-concrete beams, prestressed bridge girders, and large steel plate girders per Eurocode 2 / Eurocode 3 design codes. ASCE 7 and AISC 360 also accept kN·m in dual-unit specifications. Convert kN·m to kip-ft by dividing by 1.356.
Quick Facts
- 1 Foot-pound-force equals 0.00135582 Kilonewton-meters
- 1 Kilonewton-meter equals 737.561 Foot-pounds-force
- Foot-pound-force is a unit of torque
- Kilonewton-meter is a unit of torque
- This conversion is commonly used in automotive maintenance, structural engineering, and manufacturing
- The Foot-pound-force belongs to the imperial system
- The Kilonewton-meter belongs to the metric system
Common Foot-pound-force to Kilonewton-meter Conversions
| Foot-pounds-force (ft·lbf) | Kilonewton-meters (kN·m) |
|---|---|
| 0.01 | 0.0000135582 |
| 0.1 | 0.000135582 |
| 0.25 | 0.000338955 |
| 0.5 | 0.00067791 |
| 1 | 0.00135582 |
| 2 | 0.00271164 |
| 3 | 0.00406746 |
| 5 | 0.0067791 |
| 10 | 0.0135582 |
| 15 | 0.0203373 |
| 20 | 0.0271164 |
| 25 | 0.0338955 |
| 50 | 0.067791 |
| 75 | 0.101686 |
| 100 | 0.135582 |
| 250 | 0.338955 |
| 500 | 0.67791 |
| 1000 | 1.35582 |
| 5000 | 6.7791 |
| 10000 | 13.5582 |
Understanding Foot-pounds-force
The Foot-pound-force (symbol: ft·lbf) is a unit of torque. An imperial unit of torque equal to one pound-force applied at a one-foot lever arm (≈ 1.35582 N·m per NIST SP 811). Foot-pounds are the dominant US working unit for torque in automotive, industrial, and trades work: vehicle service manuals (passenger-car wheel-lug torque 80-100 ft·lbf; light-truck 130-160 ft·lbf; semi-truck 450-500 ft·lbf), automotive engine peak-torque specifications (US passenger cars typically 130-400 ft·lbf; full-size pickup diesel 800-1,000 ft·lbf; Dodge Challenger Hellcat Redeye 707 ft·lbf), US-made torque-wrench scales (Snap-On, Mac, Matco), helicopter and small-aircraft propeller/prop-strike inspection criteria, ASME B16 flange-bolt torque tables, and firearms barrel-threading specifications. Critical engineer's-eye distinction: ft·lbf as TORQUE (a vector moment) is dimensionally identical to ft·lb as ENERGY (a scalar work integral) — both are pound-force × foot — but they describe different physical quantities and must not be conflated when balancing power equations. Convert ft·lbf to N·m by multiplying by 1.356; to in·lbf by multiplying by 12.
It belongs to the imperial measurement system.
Foot-pounds-force are commonly used in automotive maintenance, structural engineering, and manufacturing.
Understanding Kilonewton-meters
The Kilonewton-meter (symbol: kN·m) is a unit of torque. A metric unit of torque/moment equal to exactly 1,000 newton-meters. Kilonewton-meters are the working unit for large-scale rotational and structural loads: industrial steam and gas turbines (a typical 100 MW power-station turbine produces ~250-500 kN·m at the rotor), large marine diesel engines for ship propulsion (a Wärtsilä Sulzer RTA96-C two-stroke produces ~7,600 kN·m at 102 rpm — the highest sustained torque of any production engine), locomotive traction (~300-800 kN·m starting torque from electric/diesel-electric locomotives), wind-turbine main-shaft torque (a modern 5 MW onshore turbine ~3,800 kN·m, 15 MW offshore Haliade-X ~9,000 kN·m), and structural-bending moments on reinforced-concrete beams, prestressed bridge girders, and large steel plate girders per Eurocode 2 / Eurocode 3 design codes. ASCE 7 and AISC 360 also accept kN·m in dual-unit specifications. Convert kN·m to kip-ft by dividing by 1.356.
It belongs to the metric measurement system.
Kilonewton-meters are commonly used in automotive maintenance, structural engineering, and manufacturing.
Why Convert Foot-pounds-force to Kilonewton-meters?
Converting between Foot-pounds-force and Kilonewton-meters is a frequent requirement for engineers, scientists, and students working with torque values. Different industries and regions favour different unit systems, so having a dependable conversion tool saves time and prevents errors in technical calculations. Whether you are verifying a specification sheet, cross-checking simulation results, or preparing a report for an international audience, accurate torque conversion is essential.
Frequently Asked Questions
How do I convert Foot-pounds-force to Kilonewton-meters?
An imperial unit of torque equal to one pound-force applied at a one-foot lever arm (≈ 1. To convert Foot-pounds-force to Kilonewton-meters, multiply by 0.00135582. For example, 25 ft·lbf equals 0.0338955 kN·m.
How many Kilonewton-meters are in 1 Foot-pound-force?
There are 0.00135582 Kilonewton-meters in 1 Foot-pound-force.
How many Foot-pounds-force are in 1 Kilonewton-meter?
There are 737.561 Foot-pounds-force in 1 Kilonewton-meter.
What is the formula for Foot-pound-force to Kilonewton-meter conversion?
The formula is: multiply by 0.00135582. This means 1 ft·lbf = 0.00135582 kN·m.
Is a Foot-pound-force bigger than a Kilonewton-meter?
Yes. One Foot-pound-force is larger than one Kilonewton-meter because 1 ft·lbf equals 0.00135582 kN·m, which is less than 1.
When do you need to convert between Foot-pounds-force and Kilonewton-meters?
A metric unit of torque/moment equal to exactly 1,000 newton-meters. Foot-pound-force and Kilonewton-meter are both torque units, so conversion comes up whenever one source of information uses one unit and another uses the other — a classic cross-reference challenge in engineering, trade, travel, and everyday life.