Single Conversion
Batch Converter & Export
| # | Newton meters (N·m) | inch pounds (in·lbf) | Action |
|---|
Example Data
These examples demonstrate typical torque values and their conversions.
| # | Newton meters (N·m) | inch pounds (in·lbf) |
|---|
Formula Used
The conversion between Newton meters (N·m) and inch pounds (in·lbf) is linear:
N·m = in·lbf ÷ 8.850745791
Derivation. 1 m = 39.37007874 in and 1 N = 0.22480894387 lbf. Multiply these to obtain 39.37007874 × 0.22480894387 = 8.850745791.
For engineering work you may round the factor to 8.85075 if a shorter representation is sufficient.
How to Use This Calculator
- Enter a torque value in N·m and choose decimal places.
- Press Enter or click Convert to get the in·lbf result.
- For multiple values, add them to the batch table individually.
- Use Export CSV or Export PDF to download your batch results.
- Load the example dataset to verify or demonstrate the conversion.
FAQs
1) What constant do you use?
We use 1 N·m = 8.850745791 in·lbf, derived from exact SI relationships. You can round to 8.85075 for typical field work.
2) Can I convert from in-lbs back to N·m?
Yes. Use N·m = in·lbf ÷ 8.850745791. You can also type in-lbf values into the batch table by first converting them to N·m if needed.
3) How many decimal places should I choose?
Two decimals are usually fine. Increase precision for sensitive assemblies. The calculator supports 0–6 decimals.
4) Does the tool accept scientific notation?
Yes. Inputs like 1e3 or 2.5e-2 are valid. The result respects your selected decimal places.
5) How do I export my results?
Use the CSV or PDF buttons in the batch section. CSV opens in spreadsheets; PDF is great for reports and documentation.
6) What about foot-pounds?
To get ft·lbf from N·m, multiply by 0.737562149. This page focuses on inch pounds since they are common for small fasteners.