TROY VS ORDINARY
31.103 g vs 28.350 gA troy ounce is 9.7% heavier than an ordinary ounce.
Compare ounce weights
To: Ordinary ounces (oz)
CONVERTED WEIGHT
Ordinary ounces (oz)
1 ozt = 1.09714286 oz
| Troy ounces (ozt) | Ordinary ounces (oz) |
|---|---|
| 1 | 1.09714286 |
| 2 | 2.19428571 |
| 5 | 5.48571429 |
| 10 | 10.97142857 |
Check the ounce on your scale
Troy weight uses 31.1034768 g per ounce. The ordinary avoirdupois ounce weighs 28.349523125 g. Select “ozt” for a troy reading and “oz” for an ordinary scale reading before valuing metal.
Calling 1 ordinary ounce a troy ounce overstates its weight by about 9.714%. At an illustrative $3,000 per fine troy ounce, 1 ordinary ounce of pure metal is worth $2,734.38 rather than $3,000.00.