# Newton-meters to Pound-feet (ft-lb) (N·m to lbf·ft)

> Convert newton-meters to pound-feet (ft-lb): 1 N·m = 0.737562 lbf·ft. Exact conversion factor, formula, 22-row table and worked examples, with JSON API and MCP access.

- Page id: `newton-meters-to-ft-lbs` · Quantity: Torque (`torque`, base unit Nm) · Tool: `convert_units`
- Canonical page: https://tttkmbb.com/conversion/newton-meters-to-ft-lbs · This document: https://tttkmbb.com/conversion/newton-meters-to-ft-lbs.md · JSON: https://tttkmbb.com/conversion/newton-meters-to-ft-lbs.json (add `?value=` for a result)

## Formula

- `1 N·m = 0.737562 lbf·ft`
- `pound-feet (ft-lb) = newton-meters × 0.7375621493`
- Reverse: `newton-meters = pound-feet (ft-lb) × 1.355817948`

The factor follows from the SI definitions of both units (NIST SP 811); values below are rounded to 6 significant figures, the API returns up to 12.

## Worked examples

- 5 N·m = 3.68781 lbf·ft
- 12.5 N·m = 9.21953 lbf·ft
- 100 N·m = 73.7562 lbf·ft

## Conversion table

| Newton-meters (N·m) | Pound-feet (ft-lb) (lbf·ft) |
| --- | --- |
| 1 | 0.737562 |
| 2 | 1.47512 |
| 3 | 2.21269 |
| 4 | 2.95025 |
| 5 | 3.68781 |
| 6 | 4.42537 |
| 7 | 5.16294 |
| 8 | 5.9005 |
| 9 | 6.63806 |
| 10 | 7.37562 |
| 15 | 11.0634 |
| 20 | 14.7512 |
| 25 | 18.4391 |
| 30 | 22.1269 |
| 40 | 29.5025 |
| 50 | 36.8781 |
| 75 | 55.3172 |
| 100 | 73.7562 |
| 200 | 147.512 |
| 250 | 184.391 |
| 500 | 368.781 |
| 1000 | 737.562 |

## API

- `GET https://tttkmbb.com/api/v1/convert?value=5&from_unit=Nm&to_unit=lbf_ft` → unified JSON envelope with `result.values.result`, `formula`, `factor`, `sources`, `freshness`
- MCP: server `https://tttkmbb.com/mcp`, tool `convert_units` with `{"value":5,"from_unit":"Nm","to_unit":"lbf_ft"}`
- All torque units: https://tttkmbb.com/api/v1/units?quantity=torque · full converter: [Torque Converter](https://tttkmbb.com/conversion/torque.md)
- Authentication: none. Freshness: `static` (fixed conversion factors).

## FAQ

**How many pound-feet (ft-lb) are in one newton-meter?**

1 N·m = 0.737562 lbf·ft. The factor comes from the SI definitions of both units (NIST SP 811 / BIPM), so it is exact or correct to at least 10 significant figures.

**What is the formula to convert newton-meters to pound-feet (ft-lb)?**

Multiply the value in newton-meters by 0.7375621493: pound-feet (ft-lb) = newton-meters × 0.7375621493. For example, 5 N·m = 3.68781 lbf·ft.

**How do I convert pound-feet (ft-lb) back to newton-meters?**

Multiply by the inverse factor 1.355817948 (newton-meters = pound-feet (ft-lb) × 1.355817948), or use the pound-feet (ft-lb)-to-newton-meters page.

## Related conversions

- [Pound-feet (ft-lb) to newton-meters](https://tttkmbb.com/conversion/ft-lbs-to-newton-meters.md) (reverse)
- [Newton-meters to Pound-inches (in-lb)](https://tttkmbb.com/conversion/newton-meters-to-in-lbs.md)
- [Pound-inches (in-lb) to Newton-meters](https://tttkmbb.com/conversion/in-lbs-to-newton-meters.md)
- [Newton-meters to Kilogram-force meters](https://tttkmbb.com/conversion/newton-meters-to-kgf-m.md)
- [Kilogram-force meters to Newton-meters](https://tttkmbb.com/conversion/kgf-m-to-newton-meters.md)
- [Pound-feet (ft-lb) to Pound-inches (in-lb)](https://tttkmbb.com/conversion/ft-lbs-to-in-lbs.md)
- [Pound-inches (in-lb) to Pound-feet (ft-lb)](https://tttkmbb.com/conversion/in-lbs-to-ft-lbs.md)
- [Kilogram-force meters to Pound-feet (ft-lb)](https://tttkmbb.com/conversion/kgf-m-to-ft-lbs.md)
- [Pound-feet (ft-lb) to Kilogram-force meters](https://tttkmbb.com/conversion/ft-lbs-to-kgf-m.md)

## Data Sources

- NIST Special Publication 811 – Guide for the Use of the International System of Units (SI), Appendix B conversion factors — https://www.nist.gov/pml/special-publication-811 (standard, retrieved 2026-09-24)
- BIPM – The International System of Units (SI Brochure, 9th edition) — https://www.bipm.org/en/publications/si-brochure (standard, retrieved 2026-09-24)
- Wikipedia – Conversion of units — https://en.wikipedia.org/wiki/Conversion_of_units (reference, retrieved 2026-09-24)