This tool converts torque from one unit to another in seconds. Torque is a turning force, like what a wrench applies when you tighten a bolt or what an engine produces to rotate a shaft. This calculator helps students, mechanics, engineers, DIY users, and anyone reading specs in different unit systems. You enter a torque value, choose the unit you have, then pick the unit you want. The result shows the converted torque instantly, so you can compare product datasheets, follow service manuals, or match torque settings without guesswork.

How to Use This Calculator

1. Enter your torque value (for example, 120).
2. Select the unit you currently have (such as N·m or lb-ft).
3. Choose the unit you want to convert to (such as lb-in or kgf·m).
4. View the converted value in the output field.
5. If needed, change units or value to compare different specifications.

What This Calculator Measures

Torque is a measure of rotational force. It describes how strongly a force causes something to twist around a point or axis.

Key terms in simple words:

• Torque: Turning force that causes rotation.
• Lever arm (distance): How far the force is applied from the pivot point.
• Force: The push or pull being applied.
• Units: Different ways to write torque depending on country, industry, or tool manuals.

Common torque units you may see:

• N·m (newton meter)
• lb-ft (pound-foot)
• lb-in (pound-inch)
• kgf·m (kilogram-force meter)
• kgf·cm (kilogram-force centimeter)
• dyn·cm (dyne centimeter)

Formula or Logic (Easy Explanation)

This calculator converts by using fixed relationships between units. Think of it like currency exchange, but for torque. Each torque unit can be expressed relative to a standard reference. The tool first interprets your input in that reference form, then converts it into your chosen output unit. No heavy math is required from you. You only need the value and the units.

Example Calculations

Example 1: N·m to lb-ft

• Input: 100 N·m
• Output: ≈ 73.76 lb-ft

Example 2: lb-ft to N·m

• Input: 50 lb-ft
• Output: ≈ 67.79 N·m

Example 3: lb-in to lb-ft

• Input: 240 lb-in
• Output: 20 lb-ft

Understanding Your Results

Your output is the same torque expressed in a different unit. The meaning does not change, only the label and number do.

How to read it correctly:

• A larger number does not always mean "more torque." It may simply be a smaller unit.
• For example, lb-in will show a bigger number than lb-ft for the same torque because inches are smaller than feet.

When results matter most:

• Tightening fasteners to a specific torque setting
• Comparing engine or motor torque ratings
• Checking manufacturer specs across metric and imperial documents
• Converting between workshop tools and service manual units

Common Mistakes to Avoid

• Mixing up lb-ft and lb-in (they are not the same).
• Confusing torque (rotational force) with regular force (straight push/pull).
• Entering a value with the wrong unit selected.
• Forgetting to change both the "from" and "to" units.
• Rounding too early when you need precision.
• Assuming kgf·m is the same as N·m (it is not).
• Reading engine torque and bolt torque as interchangeable (they are different use cases).