Convert Grains per minute to Milligrams per hour
Convert Grains per minute (gr/min) to Milligrams per hour (mg/h) instantly and accurately.
Conversion Formula
mg/h = gr/min × 3887.9346
About Grains per minute
The grain per minute (gr/min) equals 6.479891×10⁻⁵/60 ≈ 1.080×10⁻⁶ kg/s. This unit appears in HVAC humidity engineering: moisture added or removed from conditioned air is traditionally expressed in grains of water per pound of dry air per minute in US practice. A whole-house humidifier may evaporate 300-600 gr/min at design load. 1 gr/min ≈ 1.080×10⁻⁶ kg/s.
About Milligrams per hour
The milligram per hour (mg/h) equals 10⁻⁶/3600 ≈ 2.778×10⁻¹⁰ kg/s, adopted in transdermal drug-patch pharmacokinetics to express dermal absorption rate. A nicotine patch typically releases 14-21 mg over 24 h, corresponding to ≈0.58-0.88 mg/h. Environmental emission tests for laboratory fume hoods also express contaminant escape in mg/h. 1 mg/h = 1/3600 mg/s.
Quick Reference Table
| Grains per minute (gr/min) | Milligrams per hour (mg/h) |
|---|---|
| 1 gr/min | 3887.93 mg/h |
| 2 gr/min | 7775.87 mg/h |
| 5 gr/min | 19439.7 mg/h |
| 10 gr/min | 38879.3 mg/h |
| 25 gr/min | 97198.4 mg/h |
| 50 gr/min | 194397 mg/h |
| 100 gr/min | 388793 mg/h |