Convert Milligrams to Micrograms
Convert Milligrams (mg) to Micrograms (µg) instantly and accurately.
Conversion Formula
µg = mg × 1000
About Milligrams
A milligram (mg) is one thousandth of a gram (10⁻³ g). It is the primary unit for pharmaceutical dosing: aspirin tablets are typically 500 mg, ibuprofen 200-400 mg, and melatonin supplements 0.5-10 mg. Precious metal assay results and alloy compositions are specified in milligrams per kilogram (mg/kg = ppm). Nutritional labels worldwide list mineral content in milligrams - the recommended daily intake of iron is 8-18 mg, calcium 1000 mg, and sodium under 2300 mg. A grain of rice weighs about 25-30 mg, and a medium eyelash approximately 0.1 mg.
About Micrograms
A microgram (µg or mcg) is one millionth of a gram (10⁻⁶ g). It is the standard dosing unit for potent medications and micronutrients: vitamin B12 recommended daily intake is 2.4 µg, folic acid supplements are 400 µg, and levothyroxine (thyroid medication) doses are typically 25-200 µg. Air quality standards measure fine particulate matter (PM2.5) in micrograms per cubic meter - the WHO guideline is 15 µg/m³ annual mean. A grain of sand weighs about 50-100 micrograms, and a single snowflake approximately 3 micrograms.
Quick Reference Table
| Milligrams (mg) | Micrograms (µg) |
|---|---|
| 1 mg | 1000 µg |
| 2 mg | 2000 µg |
| 5 mg | 5000 µg |
| 10 mg | 10000 µg |
| 25 mg | 25000 µg |
| 50 mg | 50000 µg |
| 100 mg | 100000 µg |