Grams per Second to Kilograms per Hour Converter
Common Conversions
| g/s | kg/h |
|---|---|
| 0.1 | 0.36 |
| 0.5 | 1.8 |
| 1 | 3.6 |
| 2 | 7.2 |
| 5 | 18 |
| 10 | 36 |
| 25 | 90 |
| 50 | 180 |
| 100 | 360 |
| 1000 | 3600 |
Why this conversion matters in chemistry
Continuous-flow API manufacture is a place this matters. A microreactor pump set to 0.5 g/s of a coupling-partner stock produces 1.8 kg/hr of throughput — the per-hour figure that aggregates into the campaign-total kilogram tonnage for a Phase II clinical-supply batch. The multiplier of 3.6 kg/hr per g/s follows from the 3600 s/hr × 0.001 kg/g cancellation. You use it when an instrument-side per-second flow rate needs to be in the per-hour mass-balance form a process-development summary expects.
Formula
kg/h = g/s × 3.6
Worked Examples
1 g/s = 3.6 kg/h
The conversion anchor — a typical small-scale flow-reactor feed rate.
10 g/s = 36 kg/h
A pilot-plant reagent-dosing rate — the step beyond bench-scale flow chemistry.
0.278 g/s = 1 kg/h
The reverse anchor — about how many grams per second make a kilogram per hour.
Frequently Asked Questions
How do I convert g/s to kg/h?
Multiply by 3.6. The factor decomposes into 3600 seconds per hour divided by 1000 grams per kilogram. The relationship is exact through the SI definitions of both units.
Why does mass flow rate matter in chemical processes?
Mass flow rate sets the residence time in a continuous reactor, drives the reagent-stoichiometry ratio between feed lines, and is the key input to any material-balance calculation. Get the flow wrong and the reaction misses the intended conditions.
How is mass flow rate measured?
Coriolis flow meters measure true mass flow directly off the resonance shift in a vibrating tube. Thermal mass flow meters work for gases via a heat-pulse measurement. Gravimetric feeders work for solids by weighing the supply hopper continuously.