Torque Conversion Calculator: Nm to lb-ft & in-lbs
Interactive mechanical engineering utility. Convert rotational force instantly across Newton-Meters, Foot-Pounds, and Kilogram-Meters for precise bolt fastening and engine output specs.
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100% Local Processing. Your dimensional inputs are processed entirely within your browser. No data is sent to external servers.
Input Torque
Equivalent Torque
How to Use the Torque Conversion Calculator
- Enter your torque value into the input field.
- Select your input unit (e.g., Newton-Meters, Foot-Pounds, Inch-Pounds).
- The calculator instantly displays the equivalent force across all major global torque units simultaneously in the data grid.
Frequently Asked Questions
How do you convert Newton-Meters (Nm) to Foot-Pounds (lb-ft)?
To convert Newton-Meters to Foot-Pounds, multiply the Nm value by 0.73756. For example, 100 Nm is equal to 73.76 lb-ft.
How do you convert Foot-Pounds (lb-ft) to Newton-Meters (Nm)?
To convert Foot-Pounds to Newton-Meters, multiply the lb-ft value by 1.3558. For example, 50 lb-ft is equal to 67.79 Nm.
What is the difference between lb-ft and ft-lb?
While often used interchangeably in casual automotive settings, 'lb-ft' (pound-feet) technically refers to torque (a rotational force), whereas 'ft-lb' (foot-pounds) technically refers to work or energy.
How do you convert Inch-Pounds to Foot-Pounds?
To convert Inch-Pounds (in-lbs) to Foot-Pounds (lb-ft), divide the in-lbs value by 12. For example, 120 in-lbs equals 10 lb-ft.
What is the standard unit of torque in the metric system?
The Newton-Meter (Nm) is the standard SI (International System) unit for torque.
Is kg-m a valid torque unit?
Yes, Kilogram-Meters (kg-m) is a metric unit of torque historically used in engineering, though Newton-Meters (Nm) is the modern standard. 1 kg-m equals 9.80665 Nm.
Why is torque important?
Torque is a measure of rotational force. It is critical in mechanical engineering, automotive design (engine output), and construction (bolt tightening specifications) to ensure parts are securely fastened without shearing.
How accurate is this calculator?
This calculator uses highly precise conversion factors (e.g., 1 Nm = 0.7375621493 lb-ft) to ensure engineering-grade accuracy up to 4 decimal places.
Limitations
Conversions are purely mathematical and perfectly accurate. However, always ensure your physical torque wrenches are properly calibrated, as mechanical degradation can cause wrenches to apply incorrect torque even if the conversion math is correct.
Data Privacy & Security
This Torque Conversion Calculator runs entirely in your web browser. No engineering specifications are sent to any external servers, ensuring complete privacy.
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