Convert Foot-pounds-force to Kilogram-force-meters
Instantly convert Foot-pounds-force (ft·lbf) to Kilogram-force-meters (kgf·m) with our free online calculator.
Formula: ft·lbf to kgf·m — multiply by 0.138255
Reference Table
| Foot-pounds-force (ft·lbf) | Kilogram-force-meters (kgf·m) |
|---|---|
| 1 | 0.138255 |
| 5 | 0.691276 |
| 10 | 1.38255 |
| 25 | 3.45638 |
| 50 | 6.91276 |
| 100 | 13.8255 |
How to Convert Foot-pounds-force to Kilogram-force-meters
Formula
To convert Foot-pounds-force (ft·lbf) to Kilogram-force-meters (kgf·m): multiply by 0.138255
Step-by-Step
- Start with your value in Foot-pounds-force (ft·lbf).
- Multiply by 0.138255 to perform the conversion.
- The result is your value expressed in Kilogram-force-meters (kgf·m).
Conversion Factor
1 ft·lbf = 0.138255 kgf·m
Reverse Factor
1 kgf·m = 7.233 ft·lbf
Worked Example
Convert 25 Foot-pounds-force to Kilogram-force-meters: 25 ft·lbf = 3.45638 kgf·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 Kilogram-force-meter (kgf·m)
A legacy metric unit of torque equal to one kilogram-force applied at a one-meter lever arm (exactly 9.80665 N·m, derived from the standard acceleration of gravity g₀ = 9.80665 m/s²). Although officially replaced by the newton-meter under SI / ISO 80000-4, kgf·m persists in specific contexts: Japanese and older European machinery specifications (Yamaha, Suzuki, Kawasaki, and Honda motorcycle service manuals dual-list axle/swingarm/crankcase torques in kgf·m alongside N·m; Russian and Eastern-European industrial press ratings), Korean automotive heavy-equipment specs, legacy ISO 4759-3 fastener-tightening tables (now superseded by VDA / ISO 16047), and crank-handle / hand-tool torque ratings in markets where kgf is still the everyday force unit. Typical motorcycle axle nut: ~10 kgf·m ≈ 100 N·m. Convert kgf·m to N·m by multiplying by exactly 9.80665; to ft·lbf by multiplying by 7.233.
Quick Facts
- 1 Foot-pound-force equals 0.138255 Kilogram-force-meters
- 1 Kilogram-force-meter equals 7.233 Foot-pounds-force
- Foot-pound-force is a unit of torque
- Kilogram-force-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 Kilogram-force-meter belongs to the metric system
Common Foot-pound-force to Kilogram-force-meter Conversions
| Foot-pounds-force (ft·lbf) | Kilogram-force-meters (kgf·m) |
|---|---|
| 0.01 | 0.00138255 |
| 0.1 | 0.0138255 |
| 0.25 | 0.0345638 |
| 0.5 | 0.0691276 |
| 1 | 0.138255 |
| 2 | 0.27651 |
| 3 | 0.414765 |
| 5 | 0.691276 |
| 10 | 1.38255 |
| 15 | 2.07383 |
| 20 | 2.7651 |
| 25 | 3.45638 |
| 50 | 6.91276 |
| 75 | 10.3691 |
| 100 | 13.8255 |
| 250 | 34.5638 |
| 500 | 69.1276 |
| 1000 | 138.255 |
| 5000 | 691.276 |
| 10000 | 1382.55 |
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 Kilogram-force-meters
The Kilogram-force-meter (symbol: kgf·m) is a unit of torque. A legacy metric unit of torque equal to one kilogram-force applied at a one-meter lever arm (exactly 9.80665 N·m, derived from the standard acceleration of gravity g₀ = 9.80665 m/s²). Although officially replaced by the newton-meter under SI / ISO 80000-4, kgf·m persists in specific contexts: Japanese and older European machinery specifications (Yamaha, Suzuki, Kawasaki, and Honda motorcycle service manuals dual-list axle/swingarm/crankcase torques in kgf·m alongside N·m; Russian and Eastern-European industrial press ratings), Korean automotive heavy-equipment specs, legacy ISO 4759-3 fastener-tightening tables (now superseded by VDA / ISO 16047), and crank-handle / hand-tool torque ratings in markets where kgf is still the everyday force unit. Typical motorcycle axle nut: ~10 kgf·m ≈ 100 N·m. Convert kgf·m to N·m by multiplying by exactly 9.80665; to ft·lbf by multiplying by 7.233.
It belongs to the metric measurement system.
Kilogram-force-meters are commonly used in automotive maintenance, structural engineering, and manufacturing.
Why Convert Foot-pounds-force to Kilogram-force-meters?
Converting between Foot-pounds-force and Kilogram-force-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 Kilogram-force-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 Kilogram-force-meters, multiply by 0.138255. For example, 25 ft·lbf equals 3.45638 kgf·m.
How many Kilogram-force-meters are in 1 Foot-pound-force?
There are 0.138255 Kilogram-force-meters in 1 Foot-pound-force.
How many Foot-pounds-force are in 1 Kilogram-force-meter?
There are 7.233 Foot-pounds-force in 1 Kilogram-force-meter.
What is the formula for Foot-pound-force to Kilogram-force-meter conversion?
The formula is: multiply by 0.138255. This means 1 ft·lbf = 0.138255 kgf·m.
Is a Foot-pound-force bigger than a Kilogram-force-meter?
Yes. One Foot-pound-force is larger than one Kilogram-force-meter because 1 ft·lbf equals 0.138255 kgf·m, which is less than 1.
When do you need to convert between Foot-pounds-force and Kilogram-force-meters?
A legacy metric unit of torque equal to one kilogram-force applied at a one-meter lever arm (exactly 9. Foot-pound-force and Kilogram-force-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.