Convert between lb/hr and g/s with support for lb/s, lb/min, kg/hr, kg/s, and tonne/hr mass flow rate equivalents for quick conversions.
lb/hr to g/s Formula
- lb/hr = mass flow rate in pounds per hour
- 453.59237 = grams per pound (exact)
- 3600 = seconds per hour
The combined factor is approximately 0.125997881. To go the other way, multiply g/s by approximately 7.93664144 to get lb/hr. The conversion is purely a unit change and does not depend on the fluid, density, or temperature.
Reference Tables
Quick lookup for common values.
| lb/hr | g/s | kg/hr |
|---|---|---|
| 1 | 0.126 | 0.4536 |
| 10 | 1.26 | 4.536 |
| 100 | 12.60 | 45.36 |
| 500 | 62.999 | 226.80 |
| 1,000 | 125.998 | 453.59 |
| 5,000 | 629.99 | 2,267.96 |
| 10,000 | 1,259.98 | 4,535.92 |
| From | To g/s, multiply by |
|---|---|
| lb/hr | 0.1259979 |
| lb/min | 7.55987 |
| lb/s | 453.59237 |
| kg/hr | 0.27778 |
| kg/s | 1,000 |
| tonne/hr | 277.778 |
Worked Example
You have a fuel feed rated at 2,400 lb/hr and need it in g/s for a simulation input.
g/s = 2,400 × 453.59237 / 3600 ≈ 302.394913 g/s
Check: using the unrounded converted rate and multiplying by 3600 / 453.59237 returns 2,400 lb/hr.
FAQ
Does this conversion change with the fluid? No. Both lb/hr and g/s are mass flow rates, so density and temperature do not affect the math.
What if I have volumetric flow (gpm, m³/hr)? Convert volume to mass first using the fluid density, then apply the formula above.
Is the pound here the avoirdupois pound? Yes. 1 lb = 453.59237 g exactly.
