How Many Grams in an Ounce?

There are 28.35 grams in an ounce (avoirdupois). This is the standard ounce used for most everyday measurements.

How many grams in an ounce? — see the answer and conversion table below.

Use the related converter below for custom values.

Formula

Answer: There are 28.35 grams in an ounce (avoirdupois). This is the standard ounce used for most everyday measurements.

Example

Question: How many grams in an ounce? Answer: There are 28.35 grams in an ounce (avoirdupois). This is the standard ounce used for most everyday measurements.

How to Use

  1. Read the direct answer at the top of the page
  2. Check the conversion table for common values
  3. Use the related converter for custom values
  4. Browse the FAQ for common follow-up questions

Frequently Asked Questions

How many grams in a troy ounce?

There are 31.103 grams in 1 troy ounce. Troy ounces are used for precious metals (gold, silver, platinum).

How many grams in half an ounce?

There are 14.175 grams in half an ounce (1/2 oz).

How many ounces in 100 grams?

There are 3.527 ounces in 100 grams (100 / 28.35).

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Author: Calczy Editorial Team Reviewed by: Calczy Editorial Team Last updated: 2026-09-16

This page was reviewed for accuracy by the Calczy editorial team. Our editorial process follows our editorial policy to ensure reliable, up-to-date conversion tools and reference content.