Home › Unit Conversion › Pound-inches (in-lb) to Pound-feet (ft-lb)
Pound-inches (in-lb) to Pound-feet (ft-lb) (lbf·in to lbf·ft)
Convert pound-inches (in-lb) to pound-feet (ft-lb): 1 lbf·in = 0.0833333 lbf·ft. Exact conversion factor, formula, 22-row table and worked examples, with JSON API and MCP access.
Formula
1 lbf·in = 0.0833333 lbf·ft
pound-feet (ft-lb) = pound-inches (in-lb) × 0.08333333333 — reverse: pound-inches (in-lb) = pound-feet (ft-lb) × 12
The factor is derived from the SI definitions of both units (base unit: Nm) as listed in NIST SP 811; results on this page are shown to 6 significant figures, the API returns up to 12.
Worked examples
- 5 lbf·in = 0.416667 lbf·ft
- 12.5 lbf·in = 1.04167 lbf·ft
- 100 lbf·in = 8.33333 lbf·ft
Pound-inches (in-lb) to pound-feet (ft-lb) conversion table
| Pound-inches (in-lb) (lbf·in) | Pound-feet (ft-lb) (lbf·ft) |
|---|---|
| 1 | 0.0833333 |
| 2 | 0.166667 |
| 3 | 0.25 |
| 4 | 0.333333 |
| 5 | 0.416667 |
| 6 | 0.5 |
| 7 | 0.583333 |
| 8 | 0.666667 |
| 9 | 0.75 |
| 10 | 0.833333 |
| 15 | 1.25 |
| 20 | 1.66667 |
| 25 | 2.08333 |
| 30 | 2.5 |
| 40 | 3.33333 |
| 50 | 4.16667 |
| 75 | 6.25 |
| 100 | 8.33333 |
| 200 | 16.6667 |
| 250 | 20.8333 |
| 500 | 41.6667 |
| 1000 | 83.3333 |
FAQ
How many pound-feet (ft-lb) are in one pound-inch?
1 lbf·in = 0.0833333 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 pound-inches (in-lb) to pound-feet (ft-lb)?
Multiply the value in pound-inches (in-lb) by 0.08333333333: pound-feet (ft-lb) = pound-inches (in-lb) × 0.08333333333. For example, 5 lbf·in = 0.416667 lbf·ft.
How do I convert pound-feet (ft-lb) back to pound-inches (in-lb)?
Multiply by the inverse factor 12 (pound-inches (in-lb) = pound-feet (ft-lb) × 12), or use the pound-feet (ft-lb)-to-pound-inches (in-lb) page.
Related conversions
- Pound-feet (ft-lb) to pound-inches (in-lb) (reverse)
- Torque Converter — all torque units in one tool
- Newton-meters to Pound-feet (ft-lb)
- Pound-feet (ft-lb) to Newton-meters
- Newton-meters to Pound-inches (in-lb)
- Pound-inches (in-lb) to Newton-meters
- Newton-meters to Kilogram-force meters
- Kilogram-force meters to Newton-meters
- Kilogram-force meters to Pound-feet (ft-lb)
- Pound-feet (ft-lb) to Kilogram-force meters
Machine access
- API:
GET https://tttkmbb.com/api/v1/convert?value=5&from_unit=lbf_in&to_unit=lbf_ft - MCP: server
https://tttkmbb.com/mcp, toolconvert_unitswith{"value":5,"from_unit":"lbf_in","to_unit":"lbf_ft"} - Markdown: https://tttkmbb.com/conversion/in-lbs-to-ft-lbs.md · JSON: https://tttkmbb.com/conversion/in-lbs-to-ft-lbs.json (add
?value=for a result) · Units: /api/v1/units?quantity=torque - OpenAPI operationId:
convert_units. Freshness:static. Authentication: none.