Force and Torque
lbftotnf (US)
Convert pounds-force (lbf) to US short tons-force (tnf (US)).
Factor1 lbf = 0.0005 tnf (US)
Converter
lbf
Accepts numbers or expressions, e.g. 150 + 14.7
Result
tnf (US)
Rendered to 6 significant figures.
Formula
Formula
tnf (US) = lbf × 0.0005
Multiply any value in pounds-force by 0.0005 to obtain the value in US short tons-force.
Worked example
Convert 10000 lbf to tnf (US).
- 01Start with 10000 lbf.
- 02Multiply by the conversion factor: 10000 × 0.0005 = 5 tnf (US).
Result10000 lbf = 5 tnf (US)
Conversion table
| lbf | tnf (US) |
|---|---|
| 1 | 0.0005 |
| 2 | 0.001 |
| 5 | 0.0025 |
| 10 | 0.005 |
| 20 | 0.01 |
| 50 | 0.025 |
| 100 | 0.05 |
| 200 | 0.1 |
| 500 | 0.25 |
| 1000 | 0.5 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from lbf to tnf (US)?
1 lbf equals 0.0005 tnf (US). To convert, multiply the value in pounds-force by 0.0005.
How do I convert 1 lbf to tnf (US)?
1 lbf = 0.0005 tnf (US). For any value, multiply by 0.0005.
How do I convert tnf (US) back to lbf?
Divide by the same factor — or equivalently, multiply by 2000. So 1 tnf (US) = 2000 lbf.
When would I need to convert pound-force to US short ton-force?
Force conversions between lbf and tnf (US) are needed in structural analysis, mechanical equipment design, lifting and rigging calculations, and load specification. Newtons and kilonewtons are standard in SI-based structural codes; pound-force and kips are common in US codes and vendor datasheets.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).