Torque from one pound-force at one foot.
Pound-feet to Meganewton meters Converter — lb ft to MN m
Convert Pound-foot (lb ft) to Meganewton meter (MN m) using the exact conversion factor (1 pound-foot = 0.0000013558 meganewton meter). See the formula, worked examples, conversion table, history, and common uses.
Pound-feet to Meganewton meters converter
Converter
Engineering Converter
Convert common stress, force, torque, power, and energy units used in engineering.
Context values
Some unit families need one extra value for a physically accurate result.
Meganewton meter is 1000000 newton meter units.
Result = input x 1.355817948 / 1e+6.
Torque units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Pound-feet to Meganewton meters
Pound-foot and Meganewton meter both measure a quantity used in structural or mechanical engineering — commonly stress, pressure, force, torque, power, or energy — where converting between the unit conventions used in different regions, industries, or equipment specifications is a routine part of design work. Pound-foot is most often used for us torque wrench specifications (bolt tightening).
Formula
meganewton meters = pound-feet × 0.00000135581794833
This factor comes from each unit's defined relationship to the category's base unit: 1 pound-foot equals 1.35581794833 base units, and 1 meganewton meter equals 1000000 base units, so dividing one by the other gives the direct pound-foot-to-meganewton meter factor of 0.00000135581794833.
Simple example
1 lb ft × 0.000001355817948 = 0.0000013558 MN m
1 pound-foot = 0.0000013558 meganewton meters.
Real-world example
100 lb ft × 0.000001355817948 = 0.0001355818 MN m
100 pound-feet = 0.0001355818 meganewton meters.
Conversion table
| Pound-foot (lb ft) | Meganewton meter (MN m) |
|---|---|
| 1 lb ft | 0.0000013558 MN m |
| 10 lb ft | 0.0000135582 MN m |
| 50 lb ft | 0.0000677909 MN m |
| 100 lb ft | 0.0001355818 MN m |
| 500 lb ft | 0.000677909 MN m |
| 1,000 lb ft | 0.0013558179 MN m |
Reverse conversion: Meganewton meter to Pound-foot
0.0000013558 MN m × 737562.1493 = 0.999986762 lb ft
0.0000013558 meganewton meters = 0.999986762 pound-feet.
pound-feet = meganewton meters × 737562.149277
For a page dedicated to this direction, see Meganewton meter to Pound-foot.
Understanding the Pound-foot
Pound-foot (lb ft) measures torque. A pound-foot is the torque from one pound-force applied at one foot of leverage: exactly 1.3558179483314004 newton-meters. It is classified as a US/imperial customary unit.
Where it's used: United States (automotive and mechanical torque specifications)
Pound-foot vs. foot-pound. Pound-foot (torque) and foot-pound (energy/work) use the same two units but measure physically different quantities; US convention typically orders them differently to help distinguish which is meant, though usage isn't always consistent.
Uses of the Pound-foot today
- US torque wrench specifications (bolt tightening)
- US automotive engine torque specifications
- US mechanical and construction trades
History of the Pound-foot
The pound-foot follows from pound-force and the foot, both standardized through English and later international agreements, remaining the standard US automotive and mechanical torque unit even as most other measurements shifted toward metric in engineering contexts.
Historical origin. Pound-foot was not the invention of a single named person; it developed through the process described above.
Understanding the Meganewton meter (MN m)
Meganewton meter is 1000000 newton meter units.
Pound-foot — sources
- NIST Special Publication 811 — Documents the pound-foot's exact newton-meter equivalence.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many meganewton meters are in 1 pound-foot?
1 pound-foot equals 0.0000013558 meganewton meters, using the exact defined conversion factor rather than an estimate.
How do I convert pound-foot to meganewton meter?
Multiply the pound-foot value by 0.000001355817948. The converter above does this instantly to whatever precision you set.
How do I convert meganewton meter back to pound-foot?
Use the reverse factor: 1 meganewton meter equals 737,562.1493 pound-feet. You can also use the swap control in the converter above to flip the direction instantly.
What is a pound-foot?
Pound-foot (lb ft) measures torque. A pound-foot is the torque from one pound-force applied at one foot of leverage: exactly 1.3558179483314004 newton-meters. It is classified as a US/imperial customary unit.
What is a meganewton meter?
Meganewton meter (MN m) is a unit of engineering.
Is the pound-foot to meganewton meter conversion exact?
Yes. A pound-foot is the torque from one pound-force applied at one foot of leverage: exactly 1.3558179483314004 newton-meters. That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.
What is the difference between pound-foot vs. foot-pound?
Pound-foot (torque) and foot-pound (energy/work) use the same two units but measure physically different quantities; US convention typically orders them differently to help distinguish which is meant, though usage isn't always consistent.
Where is the pound-foot still used today?
United States (automotive and mechanical torque specifications)