Torque Converter

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Torque Unit Converter

This torque unit converter lets you instantly switch between Newton-metres (N·m), kilogram-force metres (kgf·m), pound-force feet (lbf·ft), and pound-force inches (lbf·in) — the four units most commonly found in engineering specs, service manuals, and technical datasheets. Whether you are tuning an engine, specifying fastener torque, or cross-referencing equipment from different regions, accurate unit conversion is critical. Just type a value and all equivalent torque units appear at once, with no rounding guesswork.

Benefits

Using a dedicated torque converter removes the risk of manual calculation errors that can lead to under- or over-torqued fasteners:

All units at a glance: N·m, kgf·m, lbf·ft, and lbf·in are displayed simultaneously so you never need to run multiple conversions.
Internationally calibrated: Conversion factors follow NIST and ISO standards, giving you results you can cite in technical documentation.
Zero setup: Works entirely in the browser — no app download, no account, no ads blocking your workflow.
Handles any magnitude: From micro-scale electronics assembly torques (lbf·in) to heavy diesel-engine specifications (N·m in the thousands).

Use cases

A torque unit converter is an everyday tool across many engineering and trades disciplines:

Automotive engineering: European and Japanese manufacturers spec torque in N·m; American service manuals often list lbf·ft. Convert wheel-nut and head-bolt torques without looking up a table.
Industrial machinery: Gearbox and motor datasheets from different manufacturers may use kgf·m or N·m — reconcile them instantly when sizing drive trains.
Aerospace and precision assembly: Convert lbf·in torque specs for small fasteners to N·m when using metric torque wrenches.
Quality and compliance: Document torque test results in the unit required by a specific standard (ISO, ASME, DIN) without introducing manual conversion errors.
Education: Demonstrate unit relationships in mechanical engineering courses with live, interactive values.

How to use

Converting torque units takes only a few seconds:

Step 1: Click the input field next to the unit you already know — for example, type 100 in the N·m field.
Step 2: The equivalent values in kgf·m, lbf·ft, and lbf·in update instantly as you type.
Step 3: Copy the result you need, or clear the field and enter a new value to start a fresh conversion.

Frequently asked questions

What is the difference between N·m and lbf·ft? N·m (Newton-metre) is the SI unit of torque; lbf·ft (pound-force foot) is the customary unit used in the US. 1 lbf·ft equals approximately 1.3558 N·m.

Why is kgf·m still used if N·m is the SI standard? kgf·m remains common in older Japanese and Eastern European technical literature, as well as some legacy equipment ratings. 1 kgf·m equals exactly 9.80665 N·m.

When should I use lbf·in instead of lbf·ft? lbf·in is preferred for small fasteners — electronics, sensor mounts, and precision instruments — where lbf·ft values would be a fraction less than 1 and harder to set accurately on a torque wrench.

Is this converter accurate enough for professional use? Yes. The conversion factors used are based on exact SI definitions and NIST reference data, making results suitable for engineering calculations, maintenance records, and compliance reporting.