Convert Milligrams per hour to Grains per hour
Convert Milligrams per hour (mg/h) to Grains per hour (gr/h) instantly and accurately.
Conversion Formula
gr/h = mg/h × 0.01543235835
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.
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.
Quick Reference Table
| Milligrams per hour (mg/h) | Grains per hour (gr/h) |
|---|---|
| 1 mg/h | 0.0154324 gr/h |
| 2 mg/h | 0.0308647 gr/h |
| 5 mg/h | 0.0771618 gr/h |
| 10 mg/h | 0.154324 gr/h |
| 25 mg/h | 0.385809 gr/h |
| 50 mg/h | 0.771618 gr/h |
| 100 mg/h | 1.54324 gr/h |