# Torque Unit Converter (N·m / lbf·ft / kgf·m / lbf·in)

Convert torque (moment of force) between N·m (SI base), lbf·ft (pound-foot), kgf·m (kilogram-force-metre), and lbf·in (pound-inch). Factors based on standard gravity g₀ = 9.80665 m/s² and 1 lbf = 4.4482216152605 N. Converts via N·m to the target unit and also lists the equivalent value in all four units for reference. Used for mechanical specs, automotive, and fastener tightening torque.

> Canonical page: https://elysiatools.com/en/tools/torque-unit-converter

- **Category:** Math & Numbers

- **Keywords:** torque conversion, moment of force, N·m, newton metre, lbf·ft, pound foot, kgf·m, kilogram-force metre, lbf·in, pound inch, fastener torque, tightening torque, mechanical engineering

## Overview

Convert torque values between N·m, lbf·ft, kgf·m, and lbf·in with standard conversion factors. Enter a value, choose the input and output units, select decimal places, and view the converted result with equivalent values in all four units.

## Inputs

- **Input unit** (select)
- **Value** (number): Torque value in the selected Input unit. Can be negative (e.g. counterclockwise / loosening).
- **Output unit** (select)
- **Decimal Places** (number)

## When to use

- Convert automotive or fastener torque specifications between metric and imperial units.
- Check mechanical engineering calculations expressed in N·m, lbf·ft, kgf·m, or lbf·in.
- Review tightening or loosening torque values, including negative values for counterclockwise torque.

## How it works

- Enter the torque value in the selected input unit.
- Choose the input unit and the unit for the converted result.
- The converter uses N·m as an intermediate unit and applies standard conversion factors.
- Set the number of decimal places from 0 to 10, then review the target value and all four unit equivalents.

## Use cases

- Convert wheel-nut and other automotive torque specifications from N·m to lbf·ft or lbf·in.
- Translate small-engine or equipment torque specifications between imperial and metric units.
- Compare fastener tightening values across mechanical drawings, manuals, and specifications.

## Frequently asked questions

### Which torque units does this converter support?

It supports N·m, lbf·ft, kgf·m, and lbf·in.

### Can I convert lbf·ft to N·m?

Yes. Select lbf·ft as the input unit and N·m as the output unit.

### Does the result include other unit equivalents?

Yes. The result lists equivalent values in all four supported torque units.

### Can I enter a negative torque value?

Yes. Negative values can represent counterclockwise or loosening torque.

### How many decimal places can I display?

You can choose from 0 to 10 decimal places.

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