Kilograms per Hour to Grams per Second Converter
Common Conversions
| kg/h | g/s |
|---|---|
| 0.1 | 0.028 |
| 0.5 | 0.139 |
| 1 | 0.278 |
| 2 | 0.556 |
| 5 | 1.389 |
| 10 | 2.778 |
| 25 | 6.944 |
| 50 | 13.889 |
| 100 | 27.778 |
| 1000 | 277.778 |
Why this conversion matters in chemistry
Spray-dry formulation work is the usual setting. A 10 kg/hr inlet feed for an amorphous solid dispersion API formulation is 2.78 g/s on the bench-scale sampling rate behind the analytical QC for particle-size distribution and residual solvent. In practice you reach for it when a process-spec hourly throughput ends up reported in the per-second form a real-time analyzer reports. A factor of 0.2778 g/s per kg/hr follows from the 1000 g/kg ÷ 3600 s/hr cancellation.
Formula
g/s = kg/h ÷ 3.6
Worked Examples
3.6 kg/h = 1 g/s
The reverse anchor — the cleanest small-scale process and bench conversion.
1 kg/h = 0.278 g/s
A small pilot-scale feed rate expressed per second.
100 kg/h = 27.778 g/s
A production-scale reactor throughput on the per-second scale.
Frequently Asked Questions
How do I convert kg/h to g/s?
Divide by 3.6. Since 1 kg = 1000 g and 1 hour = 3600 s, the ratio is 1000/3600 = 0.2778 g/s per kg/h. The relationship is exact through the SI definitions.
When is kg/h preferred over g/s?
Process-engineering reports and production summaries default to kg/h because the figure aligns with hourly production metrics. Lab and research instruments often log in g/s to match real-time data acquisition.
How do mass flow and volumetric flow relate?
Mass flow rate equals volumetric flow rate times density. For liquids, density is roughly constant and the conversion is a fixed factor. For gases, density depends strongly on temperature and pressure — mass flow is the more reliable specification.