pound foot per second to kilogram kilometer per hour
Convert pound foot per second (lb·ft/s) to kilogram kilometer per hour (kg·km/h). Use an editable momentum converter, conversion formula, and reference table.
1 lb·ft/s = 0.4977178358 kg·km/h
Conversion formula
One pound foot per second equals 0.4977178358 kilogram kilometer per hour. Multiply your value in pound foot per second by this factor to get kilogram kilometer per hour. For the reverse conversion, divide by the same factor.
Worked example
To convert 5 pound foot per second:5 × 0.4977178358 = 2.488589179 kg·km/h
Conversion table
| pound foot per second (lb·ft/s) | kilogram kilometer per hour (kg·km/h) |
|---|---|
| 0.01 | 0.004977178358 |
| 0.1 | 0.04977178358 |
| 1 | 0.4977178358 |
| 2 | 0.9954356715 |
| 5 | 2.488589179 |
| 10 | 4.977178358 |
| 25 | 12.44294589 |
| 50 | 24.88589179 |
| 100 | 49.77178358 |
| 1000 | 497.7178358 |
About these measurements
Momentum is mass multiplied by velocity.
The base reference used here is the kilogram meter per second. One pound foot per second is 0.1382549544 base units; one kilogram kilometer per hour is 0.2777777778 base units.
Important distinctions
Compound units must match the quantity and dimension. Temperature intervals use size factors rather than temperature offsets. Calorie and BTU entries use the explicit definitions shown.
Precision
The converter uses stored conversion factors and floating-point arithmetic. Results display up to ten significant digits, switching to scientific notation for very small or large values. Keep the precision of your original measurement when reporting results.
Common questions
How do I convert lb·ft/s to kg·km/h?
Multiply the quantity in lb·ft/s by 0.4977178358. You can also type the value into the converter above.
Can I reverse the conversion?
Yes. Use the swap button or open the kilogram kilometer per hour to pound foot per second converter.
Reference
NIST Guide to the SI — conversion factors and prefix conventions. SI prefixes scale units by powers of ten; the dimension-specific notes above describe the assumptions used on this page.
