Convert Milligrams per day to Micrograms per hour
Convert Milligrams per day (mg/d) to Micrograms per hour (µg/h) instantly and accurately.
Conversion Formula
µg/h = mg/d × 41.66666667
About Milligrams per day
The milligram per day (mg/d) equals 10⁻⁶/86400 ≈ 1.157×10⁻¹¹ kg/s, used in toxicology (daily intake limits) and in slow-release pharmaceutical implants. WHO acceptable daily intake for food additives is expressed in mg/kg body mass per day; a 70 kg adult at 1 mg/kg/d represents a 70 mg/d dose. 1 mg/d ≈ 1.157×10⁻¹¹ kg/s.
About Micrograms per hour
The microgram per hour (µg/h) equals 10⁻⁹/3600 ≈ 2.778×10⁻¹³ kg/s, used in corrosion science to quantify mass loss rates of thin films or passive oxide layers. A stainless steel specimen losing 1 µg/h represents an extremely low corrosion rate typical of passive surfaces in neutral aqueous environments. 1 µg/h = 1/3600 µg/s ≈ 2.778×10⁻¹³ kg/s.
Quick Reference Table
| Milligrams per day (mg/d) | Micrograms per hour (µg/h) |
|---|---|
| 1 mg/d | 41.6667 µg/h |
| 2 mg/d | 83.3333 µg/h |
| 5 mg/d | 208.333 µg/h |
| 10 mg/d | 416.667 µg/h |
| 25 mg/d | 1041.67 µg/h |
| 50 mg/d | 2083.33 µg/h |
| 100 mg/d | 4166.67 µg/h |