Convert Kilograms per hour to Grains per second
Convert Kilograms per hour (kg/h) to Grains per second (gr/s) instantly and accurately.
Conversion Formula
gr/s = kg/h × 4.286766209
About Kilograms per hour
The kilogram per hour (kg/h) equals 1/3600 kg/s ≈ 2.778×10⁻⁴ kg/s, the dominant metric unit in the chemical and petrochemical industry for equipment sizing. Distillation column feed rates, reactor throughputs, heat-exchanger duty calculations, and pump datasheets routinely use kg/h. A 500 MW coal-fired power station burns ≈180 000 kg/h of coal. 1 kg/h ≈ 2.778×10⁻⁴ kg/s = 2.205 lb/h.
About Grains per second
The grain per second (gr/s) equals 64.79891 mg/s or 6.479891×10⁻⁵ kg/s. The grain (= 1/7000 lb exactly) is the smallest avoirdupois mass unit, still used in ballistics for bullet and propellant-charge weights. A .308 Winchester rifle bullet of 168 gr fired in 1 s represents 168 gr/s; powder charge is typically 40-46 gr. 1 gr/s = 6.479891×10⁻⁵ kg/s = 64.79891 mg/s.
Quick Reference Table
| Kilograms per hour (kg/h) | Grains per second (gr/s) |
|---|---|
| 1 kg/h | 4.28677 gr/s |
| 2 kg/h | 8.57353 gr/s |
| 5 kg/h | 21.4338 gr/s |
| 10 kg/h | 42.8677 gr/s |
| 25 kg/h | 107.169 gr/s |
| 50 kg/h | 214.338 gr/s |
| 100 kg/h | 428.677 gr/s |