Convert Grains per hour to Milligrams per hour
Convert Grains per hour (gr/h) to Milligrams per hour (mg/h) instantly and accurately.
Conversion Formula
mg/h = gr/h × 64.79891
About Grains per hour
The grain per hour (gr/h) equals 6.479891×10⁻⁵/3600 ≈ 1.800×10⁻⁸ kg/s, used in HVAC psychrometric calculations for dehumidifier capacity and moisture-removal rates. ASHRAE load calculation spreadsheets report latent loads in grains of water per hour; a typical residential dehumidifier removes 5×10⁵-2×10⁶ gr/h. 1 gr/h ≈ 1.800×10⁻⁸ 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 hour (gr/h) | Milligrams per hour (mg/h) |
|---|---|
| 1 gr/h | 64.7989 mg/h |
| 2 gr/h | 129.598 mg/h |
| 5 gr/h | 323.995 mg/h |
| 10 gr/h | 647.989 mg/h |
| 25 gr/h | 1619.97 mg/h |
| 50 gr/h | 3239.95 mg/h |
| 100 gr/h | 6479.89 mg/h |