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Convert inch-pounds (in-lb) to newton-meters (Nm) instantly
Newton-Meters = Inch-Pounds × 0.112985
1 in-lb = 0.112985 Nm
| Inch-Pounds (in-lb) | Newton-Meters (Nm) |
|---|---|
| 5 | 0.565 |
| 10 | 1.13 |
| 15 | 1.695 |
| 20 | 2.26 |
| 25 | 2.825 |
| 50 | 5.649 |
| 75 | 8.474 |
| 100 | 11.298 |
| 150 | 16.948 |
| 200 | 22.597 |
| 300 | 33.896 |
| 500 | 56.493 |
When working with international specifications or modern technical documentation, you'll often need to convert inch-pounds to newton-meters. One inch-pound equals 0.112985 Nm, which means newton-meters are larger units. This conversion is essential when using metric torque tools with imperial specifications or vice versa.
Inch-pounds provide a convenient scale for small fasteners and delicate work. While foot-pounds would result in very small decimal values (like 0.5 ft-lb), inch-pounds give whole numbers (6 in-lb) that are easier to work with and remember. This makes inch-pounds the preferred unit for precision work in many industries, especially in the United States.
Inch-pound torque specifications are essential for:
For inch-pound applications, specialized tools provide better accuracy than standard torque wrenches. Torque screwdrivers (10-200 in-lb range) offer excellent control for small fasteners. Preset torque screwdrivers automatically release at a specific value, preventing over-torquing. Adjustable models allow you to set different values but require careful calibration.
To put the conversion in perspective: 100 in-lb equals approximately 11.3 Nm or 8.3 ft-lb. This shows why different units are used for different applications. What reads as 100 in-lb on your torque screwdriver would be a difficult-to-read 8.3 on a foot-pound wrench, demonstrating the importance of using appropriately-scaled tools and units.
To convert inch-pounds to newton-meters, multiply the in-lb value by 0.112985. For example, if you need to apply 25 in-lb of torque, that equals approximately 2.8 Nm (25 × 0.112985). If your torque wrench only shows Nm, make sure it's designed for the low torque range you're working with.
In-lb and in-lbf (inch-pounds-force) are the same unit and can be used interchangeably. The "f" clarifies that we're talking about force rather than mass, but in common usage, in-lb always refers to torque (force times distance). Both notations mean the same thing in torque specifications.
Yes, simply divide inch-pounds by 12 to get foot-pounds. For example, 120 in-lb equals 10 ft-lb (120 ÷ 12). This works because there are 12 inches in a foot. However, for small torque values, it's better to stay in inch-pounds for accuracy rather than using fractional foot-pounds.
Small fasteners have proportionally less thread engagement and material strength. The margin between "not tight enough" and "stripped threads" is very narrow. A difference of just 5-10 in-lb can mean the difference between a secure fastener and a damaged one. This is why properly calibrated torque tools and accurate conversion are essential for precision work.