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Convert Pound-feet to Newton-meters

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Engineering

Torque Converter
10 sig. figures
Formula1 lbf·ft × 1.355817948 = 1.355817948 N·m

Real-World Reference Values

ValueNewton-meters
10 lbf·ft13.56 N·mSmall fastener or hose clamp
75 lbf·ft101.7 N·mWheel lug nut (European spec)
150 lbf·ft203.4 N·mMid-range sedan engine torque
350 lbf·ft474.5 N·mV8 muscle car or large SUV
500 lbf·ft677.9 N·mHeavy-duty diesel truck

Common Uses

  • Setting a metric torque wrench when the repair manual gives specs in lbf·ft
  • Converting US engine specs for international comparison or export documentation
  • Ordering metric-rated fasteners to match a US-market torque requirement
AutomotiveIndustrial MaintenanceConstruction EquipmentMarine

Practical Tips

Quick mental math: multiply lbf·ft by 1.36 for a close N·m estimate
Torque wrench accuracy is typically ±4%; a 1.4% conversion rounding error is well within that margin
For cylinder head bolts, always follow the OEM torque-angle sequence — a single number doesn't capture the full spec

Quick Conversions

Pound-feetNewton-meters
1 lbf·ft1.35582 N·m
2 lbf·ft2.71164 N·m
5 lbf·ft6.77909 N·m
10 lbf·ft13.5582 N·m
25 lbf·ft33.8954 N·m
50 lbf·ft67.7909 N·m
100 lbf·ft135.582 N·m
250 lbf·ft338.954 N·m
500 lbf·ft677.909 N·m
1000 lbf·ft1355.82 N·m
Unit NameSymbolPer 1 Pound-foot
Dyne-centimeterdyn·cm13558200
Kilogram-force centimeterkgf·cm13.8255
Kilogram-force meterkgf·m0.138255
Kilonewton-meterkN·m0.00135582
Newton-centimeterN·cm135.582
Newton-meterN·m1.35582
Ounce-inchozf·in192
Pound-footlbf·ft1
Pound-inchlbf·in12

Frequently Asked Questions

How do I convert Pound-feet to Newton-meters?

To convert Pound-feet to Newton-meters, use the conversion where 1 Pound-foot (lbf·ft) = 1.35582 Newton-meters (N·m). For example, 1 Pound-foot = 1.35582 Newton-meters.

What are common Pound-foot to Newton-meter conversions?

Here are common conversions: 1 Pound-feet = 1.35582 Newton-meters, 5 Pound-feet = 6.77909 Newton-meters, 10 Pound-feet = 13.5582 Newton-meters, 25 Pound-feet = 33.8954 Newton-meters, 50 Pound-feet = 67.7909 Newton-meters, 100 Pound-feet = 135.582 Newton-meters.

When would I need to convert Pound-feet to Newton-meters?

Setting a metric torque wrench when the repair manual gives specs in lbf·ft. Converting US engine specs for international comparison or export documentation. Ordering metric-rated fasteners to match a US-market torque requirement.

How precise are the conversions?

All conversions use exact factors verified against NIST and ISO standards with up to 10 significant figures of precision. Results are calculated using IEEE 754 double-precision arithmetic, which provides approximately 15-17 significant digits. For temperature and other non-linear conversions, exact formulas are used rather than approximations.

How many Newton-meters is 10 Pound-feet? (Small fastener or hose clamp)

10 Pound-feet equals 13.56 N·m Newton-meters. This is a frequently referenced value because it represents small fastener or hose clamp.

Sources

Read our full methodology →