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100 Nm

Torque Converter

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Convert torque between Newton-metres, foot-pounds, inch-pounds, kilogram-force-metres, and more — 12 units with full conversion table.

12 Units
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73.7562 lbf·ft
UnitValueSymbol
Newton-metreinput100N·m
Kilonewton-metre0.1kN·m
Decinewton-metre1000dN·m
Centinewton-metre10000cN·m
Millinewton-metre100000mN·m
Micronewton-metre100000000μN·m
Pound-force foot73.7562lbf·ft
Pound-force inch885.075lbf·in
Ounce-force inch14161.2ozf·in
Kilogram-force metre10.1972kgf·m
Kilogram-force centimetre1019.72kgf·cm
Gram-force centimetre1019720gf·cm

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How to Use

  1. 1 Enter a torque value in the 'Value' field
  2. 2 Select the unit you are converting from
  3. 3 Select the target unit — or click any row in the table below to set it
  4. 4 See the result instantly in the result field
  5. 5 Use the ⇄ swap button to reverse the conversion direction
  6. 6 Browse the full table to see all 12 units at once

Features

  • Converts between 12 torque units: N·m, kN·m, dN·m, cN·m, mN·m, μN·m, lbf·ft, lbf·in, ozf·in, kgf·m, kgf·cm, gf·cm
  • Full precision conversion table showing all units simultaneously
  • Click any table row to set it as the target unit
  • Swap ⇄ button to instantly reverse from/to units
  • Handles very large values (engine torque) and very small values (servo motors)
  • Quick example presets for common engineering scenarios

Why it Matters

Torque — the rotational equivalent of force — is measured in different units depending on the engineering tradition. Automotive specs use Newton-metres (Nm) in metric countries and pound-force feet (lbf·ft) in the US. Servo motors and small mechanisms use mN·m or kgf·cm. Bolt tightening specs may be in lbf·in. Engineers routinely cross disciplines and need to convert fluently. A torque spec mismatch — using lbf·ft instead of Nm — can mean the difference between a properly tightened fastener and a broken one.

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Use Cases

Automotive Engineering

Convert engine torque specs between Nm (metric datasheets) and lbf·ft (US specs)

Fastener Tightening

Convert bolt torque specs from lbf·in to Nm for your calibrated torque wrench

Robotics & Servos

Convert servo motor specs between kgf·cm, mN·m, and N·m for actuator selection

Structural Engineering

Convert moment / torque between kN·m and kgf·m for multi-standard projects

Torque: the rotational force

Torque (also called moment of force) is what makes things spin. An engine produces torque at the crankshaft. A wrench applies torque to a bolt. A servo motor outputs torque to drive a joint. The SI unit is the Newton-metre (N·m), but the US uses pound-force feet (lbf·ft) for automotive and structural applications.

The conversion method

All units are normalised through Newton-metres. The exact value of 1 lbf·ft is 1.3558179483314 N·m (derived from the exact values of the pound-force and the international foot). Converting any unit to any other is a single multiply-then-divide.

Quick reference

100 Nm ≈ 73.8 lbf·ft. 1 kgf·m ≈ 9.807 Nm. 12 lbf·in = 1 lbf·ft.

Frequently Asked Questions

What is torque and how is it different from energy?
Torque (or moment of force) is a rotational force — the tendency of a force to rotate an object around an axis. It is measured in Newton-metres (N·m), just like energy (joules). But they are different quantities: one joule is the energy transferred by a 1 N force over 1 metre of linear displacement, while one N·m of torque is a 1 N force acting at 1 metre radius perpendicular to the axis. Context distinguishes them.
How many lbf·ft is 100 Nm?
100 N·m ≈ 73.76 lbf·ft. The exact conversion factor is 1 N·m = 0.73756214837 lbf·ft. For quick mental math, multiply Nm by 0.738 to get approximate lbf·ft, or divide lbf·ft by 0.738 to get Nm.
What is a kgf·m?
A kilogram-force metre (kgf·m) is a legacy metric unit: the torque produced by a 1 kilogram weight acting at 1 metre radius under standard gravity (9.80665 m/s²). So 1 kgf·m ≈ 9.807 N·m. It is still common in some industrial and agricultural contexts.
Why are there SI milli and micro variants?
Small mechanisms — servo motors, stepper motors, micro-actuators, electronic components — operate at torques in the millinewton-metre (mN·m) or micronewton-metre (μN·m) range. Having these SI prefixed units in the table means you don't have to mentally multiply by 1,000 or 1,000,000.
What is the difference between lbf·ft and lbf·in?
One lbf·ft (pound-force foot) = 12 lbf·in (pound-force inches). Larger torques (car engines, structural joints) are given in lbf·ft. Smaller torques (bolts, small motors) are given in lbf·in where the smaller unit gives a more convenient number.
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Want to understand the conversions?

Browse all guides →
Torque Converter Guide
torque

Torque Converter Guide: N·m, lbf·ft, kgf·m, and Every Unit Explained

Understand what torque is, how it differs from work, and how to convert between all 12 torque units — N·m, lbf·ft, lbf·in, ozf·in, kgf·m, kgf·cm, gf·cm, and more.

25 Jun 2026

5 min read

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