Ounces to Grams Converter

Convert ounces (oz) to grams (g) instantly and accurately.

Convert ounces to grams instantly with this free online tool. Type a value in ounces and see the equivalent in grams right away, or type grams to convert back. Everything runs in your browser — no sign-up and no waiting.

How to convert ounces to grams

To convert ounces to grams, multiply the number of ounces by 28.349523125, because one ounce equals 28.349523125 grams. For example, 1 ounce × 28.349523125 ≈ 28.3495 grams. This converter does the math for you and updates as you type.

  1. Enter the weight in ounces in the first field.
  2. Read the result in grams in the second field.
  3. Type into the grams field to convert in the other direction.

Why use this ounces to grams converter?

  • 100% free with no ads, sign-up, or limits.
  • Instant, two-way conversion as you type.
  • Uses the avoirdupois ounce (28.349523125 g).
  • Runs entirely in your browser.

Frequently asked questions

What is the formula to convert ounces to grams?

Grams = ounces × 28.349523125.

How many grams is 1 ounce?

1 ounce is about 28.35 grams.

How many grams is 8 ounces?

8 ounces is about 226.8 grams.