Ounces to Grams Calculator

Convert between ounces and grams for cooking, baking, shipping, crafts, ingredient labels, and metric recipes. The form’s Conversion Type lets you choose Ounces to Grams or Grams to Ounces, then enter the Weight value.

How to use this calculator

Select the direction, enter a nonnegative weight, and read the converted result. The calculator shows grams or ounces with two decimal places. For pounds, use the pounds to kilograms calculator or the broader weight converter. For liquid volume, use the ounces to milliliters calculator instead.

Conversion Formula

One ounce equals exactly 28.349523125 grams.

$grams = ounces \times 28.349523125$

For quick kitchen estimates, many people use 1 oz equals about 28.35 g. The form uses 28.3495 for ounces to grams and 0.03527396 for grams to ounces.

Worked example

For 6 oz of an ingredient:

$6 \times 28.349523125 = 170.09713875$

The calculator displays about 170.10 grams.

Common values

Do not mix ounces by weight with fluid ounces by volume. Density determines whether a volume amount can be converted to mass.