Free calculators and unit converters for general and everyday use.
Our online tools will provide quick answers to your calculation and conversion needs. On this page, you can convert weight measurements from grain to ounce and ounce to grain.
Android: Use this weight converter offline with our all-in-one calculator app.
1 ounce (oz) = 437.5 grain (gr)
1 grain (gr) = 0.0022857 ounce (oz)