Ounce (oz)
The ounce is used for small masses, food, precious metals, and English-language recipes.
History: the ounce goes back to the Roman uncia, one twelfth; in the avoirdupois system it became 1/16 of a pound.
Quickly convert ounces to grains without lookup tables or manual math.
This page is focused on converting ounces to grains. Type a number into the first field and the result appears immediately in the second field.
Example: 1 oz = 437.5 gr. Conversion formula: result = value × 0.028349523125 / 6.479891E-5.
Use this converter for everyday calculations, study notes, engineering checks, and quick value verification without installing a separate app.
The ounce is used for small masses, food, precious metals, and English-language recipes.
History: the ounce goes back to the Roman uncia, one twelfth; in the avoirdupois system it became 1/16 of a pound.
The grain is used in ballistics, historical pharmacy, and some jewelry measurements.
History: the grain comes from the mass of a barley or wheat grain and survives in ballistics and old apothecary measures.
Enter a value in the Ounce field. The converter applies the formula "result = value × 0.028349523125 / 6.479891E-5" and immediately shows the result in grains.
1 oz = 437.5 gr.
Yes. Use the swap button or choose the reverse pair from the full conversion list.