Convert ounces by weight to grams. This tool uses the avoirdupois ounce used for ordinary kitchen weights.
Weight ounce and gram converter
You do not need to choose a food
Ounces by weight and grams both measure mass, so the conversion is the same for flour, butter, or any other ingredient. The defined relationship is 1 oz = 28.349523125 g; displayed results may be rounded. Source: Unicode CLDR’s ounce conversion factor.
Enter the weight from your recipe or package, then choose the desired direction. Fractions and mixed numbers are accepted. Keep the unit with the result when you copy it into your recipe notes.
When an ounce means something else
A fluid ounce (fl oz) is a volume unit. It cannot be converted to grams without information about the substance. If you are reading a liquid measure, start with the fluid-ounce converter or choose an ingredient in cups to grams.
This tool does not use troy ounces. Check the unit name if you are working with a source outside ordinary food measurement.
Use the precision your scale supports
The exact unit factor does not improve the resolution of your kitchen scale. Read the converted result at a precision you can measure, and preserve the recipe author’s stated weight when one is already provided.
Read fluid ounces versus ounces for a side-by-side explanation, or see how rounding works here.
Frequently asked questions
How many grams is a 4 oz piece of cream cheese?
A 4 oz weight is about 113.398 g. A kitchen scale that reads whole grams can use about 113 g.
Does the same result apply to 4 fl oz?
No. Fluid ounces measure volume. Use the fluid ounce calculator to convert to another volume unit.