Answer first
What this calculator tells you
Convert between newton-meters, pound-feet, pound-inches and kilogram-force meters. Set a torque wrench to a value quoted in another unit. Formula: Result = value × (from-unit factor ÷ to-unit factor), factors relative to newton-meters. At the worked-example inputs, the converted value is 73.8. Holding every other input steady, moving value from 80 to 120 moves the result from 59 to 88.5.
Transparent method
The formula
Set a torque wrench to a value quoted in another unit.
Worked example
Example inputs
How to interpret the result
Torque is a force at a distance, so its units multiply a force unit by a length unit: newton-meters, pound-feet, pound-inches. One pound-foot is about 1.356 newton-meters, which makes 100 newton-meters about 73.8 pound-feet. A pound-foot is twelve pound-inches, an easy factor to lose when a manual switches between them halfway down the page. Reference values: one newton-meter is about 8.85 pound-inches or 0.738 pound-feet, and one kilogram-force meter is 9.807 newton-meters. A wheel-nut spec of 100 pound-feet is about 136 newton-meters.
At the worked-example inputs the converted value is 73.8. It rises with to and value and falls as from increases.
Conversion factors are exact defined constants; results are limited only by floating-point precision, not by real-world estimation.
Before you rely on it
What to check
Look at the spec's unit before setting the wrench. A bolt torqued to a pound-foot value in newton-meters ends up far too tight or too loose.
The common error
Where people go wrong with torque converter calculator
Confusing pound-feet with foot-pounds. Foot-pounds usually measure energy, while pound-feet measure torque, and the two are written differently for a reason.
Sensitivity evidence
How value changes the converted value
Holding every other input at the worked-example value, moving value from 80 to 120 moves the converted value from 59 to 88.5: a spread of 29.5, or 40% of the worked-example result.
| Value | Converted value | 1 unit of "from" in "to" units |
|---|---|---|
| 80 | 59 | 0.738 |
| 90 | 66.4 | 0.738 |
| 100worked example | 73.8 | 0.738 |
| 110 | 81.1 | 0.738 |
| 120 | 88.5 | 0.738 |
Every input, tested
Which input moves the converted value most
Of the 3 inputs, from moves the converted value most (73 across the range tested) and value moves it least (14.8).
| Input | Tested from | To | Converted value at each end | Swing |
|---|---|---|---|---|
| From | Newton-meters | Newton-centimeters | 73.8 to 0.738 | 73 (980%) |
| To | Newton-meters | Newton-centimeters | 100 to 10,000 | 9,900 (13544%) |
| Value | 90 | 110 | 66.4 to 81.1 | 14.8 (20%) |
Step by step
The worked example, input by input
| Input | Value used | What it means |
|---|---|---|
| Value | 100 | Enter the value used in this calculation. |
| From | Newton-meters | Unit to convert from. |
| To | Pound-feet | Unit to convert to. |
| Converted value | 73.8 | |
| 1 unit of "from" in "to" units | 0.738 | |
Inputs, definitions and assumptions
Value
Enter the value used in this calculation. The prefilled worked-example value is 100.
From
Unit to convert from. The prefilled worked-example value is Newton-meters.
To
Unit to convert to. The prefilled worked-example value is Pound-feet.
How to use this calculator
- 1Verify the inputs. Gather value, from and to from your own documents; the prefilled values are examples.
- 2Save a baseline. The worked example puts the converted value at 73.8. Store your own version of it as Scenario A.
- 3Test one change. Start with from, the input with the biggest effect here: switching from changes the converted value: newton-meters gives 73.8; pound-feet gives 100; pound-inches gives 8.3; kilogram-force meters gives 723.3; newton-centimeters gives 0.738.
- 4Check the boundary. Read the interpretation boundary above before acting on the result.
People also ask
Frequently asked questions
How do you calculate torque converter?
Result = value × (from-unit factor ÷ to-unit factor), factors relative to newton-meters. At the worked-example inputs the converted value is 73.8.
What does the torque converter result mean?
Set a torque wrench to a value quoted in another unit. At the worked-example inputs the converted value is 73.8. It rises with to and value and falls as from increases.
How much does value change the converted value?
Holding every other input at the worked-example value, moving value from 80 to 120 moves the converted value from 59 to 88.5, a spread of 29.5.
What are the limits of this torque converter calculator?
Conversion factors are exact defined constants; results are limited only by floating-point precision, not by real-world estimation. The tables on this page test value only from 80 to 120; a value outside that range is not tabulated here.
Which input moves the converted value most in the torque converter calculator?
Ranked by how far each moves the converted value across the range tested: from (73, 980%), to (9,900, 13544%) and value (14.8, 20%).
How much does from matter in the torque converter calculator?
The worked example uses Newton-meters. Holding every other input at its worked-example value, switching from changes the converted value: newton-meters gives 73.8; pound-feet gives 100; pound-inches gives 8.3; kilogram-force meters gives 723.3; newton-centimeters gives 0.738.
How much does to matter in the torque converter calculator?
The worked example uses Pound-feet. With the other inputs left at the worked example, switching to changes the converted value: newton-meters gives 100; pound-feet gives 73.8; pound-inches gives 885.1; kilogram-force meters gives 10.2; newton-centimeters gives 10,000.
Which inputs change the 1 unit of "from" in "to" units in the torque converter calculator?
At the worked-example inputs it is 0.738. From takes it from 0.738 to 0.00738 and to takes it from 1 to 100.
Does a bigger tire diameter actually change my real speed?
Yes: a larger overall tire diameter covers more ground per wheel rotation. So your actual speed runs faster than your speedometer indicates (which is calibrated to the stock tire size), and your odometer under-reports distance traveled.
Why is a kilocalorie called a Calorie on food labels?
Food labels use the capital-C Calorie for a kilocalorie, which is 1,000 small calories. The energy converter treats kilocalories and food Calories as the same unit.
Sources and evidence
Free Calculators Online is independent and is not affiliated with or endorsed by the source organizations. Educational estimates only.