Convert Troy Ounces to Micrograms
Convert Troy Ounces (ozt) to Micrograms (µg) instantly and accurately.
Conversion Formula
µg = ozt × 31103476.8
About Troy Ounces
The troy ounce (ozt or oz t) is the global standard for weighing and pricing precious metals - gold, silver, platinum, and palladium. Equal to 31.1034768 grams (about 10% heavier than the avoirdupois ounce), it originates from the medieval fair at Troyes, France, where a standardised weight system facilitated international trade. All gold spot prices quoted on financial markets (LBMA, COMEX, MCX) are priced per troy ounce. A standard 'Good Delivery' gold bar approved by the London Bullion Market Association weighs approximately 400 troy ounces (12.4 kg).
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
| Troy Ounces (ozt) | Micrograms (µg) |
|---|---|
| 1 ozt | 31103500 µg |
| 2 ozt | 62207000 µg |
| 5 ozt | 155517000 µg |
| 10 ozt | 311035000 µg |
| 25 ozt | 777587000 µg |
| 50 ozt | 1.555 × 109 µg |
| 100 ozt | 3.11 × 109 µg |