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Power and Energy

ft·lbf/stokgf·m/s

Convert foot-pounds force per second (ft·lbf/s) to kilograms-force metre per second (kgf·m/s).

Factor1 ft·lbf/s = 0.138255 kgf·m/s

Converter

ft·lbf/s

Accepts numbers or expressions, e.g. 150 + 14.7

Result
13.8255kgf·m/s

Rendered to 6 significant figures.

Formula

Formula
kgf·m/s = ft·lbf/s × 0.138255

Multiply any value in foot-pounds force per second by 0.138255 to obtain the value in kilograms-force metre per second.

Worked example

Convert 100 ft·lbf/s to kgf·m/s.

  1. 01Start with 100 ft·lbf/s.
  2. 02Multiply by the conversion factor: 100 × 0.138255 = 13.8255 kgf·m/s.
Result100 ft·lbf/s = 13.8255 kgf·m/s

Conversion table

ft·lbf/skgf·m/s
10.13825
20.27651
50.69127
101.3825
202.7651
506.9127
10013.825
20027.651
50069.127
1000138.25

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from ft·lbf/s to kgf·m/s?
1 ft·lbf/s equals 0.138255 kgf·m/s. To convert, multiply the value in foot-pounds force per second by 0.138255.
How do I convert 1 ft·lbf/s to kgf·m/s?
1 ft·lbf/s = 0.138255 kgf·m/s. For any value, multiply by 0.138255.
How do I convert kgf·m/s back to ft·lbf/s?
Divide by the same factor — or equivalently, multiply by 7.233014. So 1 kgf·m/s = 7.23301 ft·lbf/s.
When would I need to convert foot-pound force per second to kilogram-force metre per second?
Power conversions are common when comparing motor ratings (often kW or hp), thermal duty (BTU/hr or kW), and utility consumption in mixed-unit projects.
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).

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