Nm to in Lbs

Precision Fastener Metrology & Low-Torque Standards

When tightening small fasteners (M3 to M8 bolts), foot-pounds are too coarse. The industry standard is inch-pounds (in-lbs) or Newton-meters (N·m):

• 1 Newton-Meter (N·m): 8.850746 in-lbs = 0.737562 ft-lbs = 141.61 in-oz = 100 cN·m

• 1 Inch-Pound (in-lb): 0.112985 N·m = (1) / (12) ft-lb = 16.00 in-oz

Primary Precision Low-Torque Benchmarks

• 0.6 N·m (5.3 in-lbs): Computer motherboard M3 standoff screws

• 2.0 N·m (17.7 in-lbs): Electrical breaker terminal lugs

• 5.0 N·m (44.3 in-lbs): Carbon fiber bicycle handlebar stem faceplate

• 6.0 N·m (53.1 in-lbs): Carbon seatpost collar clamp

• 10.0 N·m (88.5 in-lbs): Automotive engine valve cover bolts

• 12.0 N·m (106.2 in-lbs): Automatic transmission fluid oil pan bolts

• 25.0 N·m (221.3 in-lbs): Oil filter housing plastic cap

Equations

• Inch-Pounds (in-lbs) = N·m × 8.85075

• Newton-Meters (N·m) = in-lbs8.85075 = in-lbs × 0.112985

How to Use This Calculator

Enter your Torque Value to Convert (e.g. 5.0), Bicycle & Precision Fastener Benchmark — choose from Custom Torque Value, 0.6 N·m (5.3 in-lbs / M3 Electronics Screw), 2.0 N·m (17.7 in-lbs / Electrical Breaker Screw), and Conversion Direction — choose from Newton-Meters to Inch-Pounds (N·m → in-lbs / multiply by 8.8507), Inch-Pounds to Newton-Meters (in-lbs → N·m / divide by 8.8507). Results update instantly as you type — adjust any value to compare scenarios.

The Formula

Conversion factors used in this calculator:

1 in-lb = 0.112984829 N

Worked Example

A carbon fiber bicycle handlebar stem stamped with 'Max 5.0 N·m' requires setting an imperial torque wrench to exactly 44.3 in-lbs.

Understanding Your Result

Unit conversion precision: round to the same number of significant figures as your original measurement. Converting 6 feet to meters gives 1.8288 m — but if your measurement was approximate (±1 inch), expressing more than 2 decimal places is false precision. For international trade and technical specifications, SI units (meters, kilograms, liters) are the standard. US customary units (feet, pounds, gallons) differ from Imperial UK units: 1 US gallon = 3.785 L vs. 1 UK gallon = 4.546 L.