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Ounces to Grams Converter

Convert ounces (oz) to grams (g) instantly, both ways, for cooking and postage.

Updated July 10, 2026

In:Unit Converters

How to use the ounces to grams converter

  1. 1Type a weight in ounces.
  2. 2Read the grams instantly.
  3. 3Or type grams to convert back.
  4. 4Use the reference table for common amounts.

Common uses

  • Converting a recipe from ounces
  • Weighing postage in grams
  • Reading a product weight
  • Baking and cooking measurements

Frequently asked questions

How do I convert ounces to grams?

Multiply the number of ounces by 28.3495. For example, 4 oz × 28.3495 = about 113.4 g. To convert grams to ounces, divide by 28.3495.

How many grams is 1 ounce?

One ounce is about 28.35 grams. So 16 ounces (one pound) is about 453.6 grams.

Is this fluid ounces or weight?

This converts weight ounces (avoirdupois) to grams. Fluid ounces measure volume, not weight, and don't convert directly to grams without knowing the substance's density.

About this tool

The ounces to grams converter changes weight between oz and g as you type — edit either box to convert both ways. One ounce equals about 28.3495 grams, so you multiply ounces by 28.3495 to get grams, or divide to go back. This is the avoirdupois ounce used for weight, not the fluid ounce for volume. Handy for cooking, postage, and product weights. Everything is calculated in your browser.

Like most tools on UtilityBase, the ounces to grams converter runs entirely in your browser — nothing you enter is uploaded or stored on a server. It's free to use with no account required. Browse more calculators here.

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