Grams to ounces converter

Grams and ounces both measure weight, so this conversion is exact and does not depend on the ingredient. The tool above converts grams, ounces, pounds, and kilograms. Use it to read a metric recipe with a US scale, or the reverse.

Pick units or type in either box.

Common gram and ounce conversions

Weight conversions, exact for any ingredient:

  • 1 ounce = 28.35 grams
  • 2 ounces = 57 grams
  • 4 ounces = 113 grams (1/4 pound)
  • 8 ounces = 227 grams (1/2 pound)
  • 16 ounces = 454 grams (1 pound)
  • 25 grams = about 0.9 ounce
  • 50 grams = about 1.8 ounces
  • 100 grams = about 3.5 ounces
  • 250 grams = about 8.8 ounces
  • 500 grams = about 17.6 ounces (1.1 pounds)
  • 1000 grams = 1 kilogram = about 2.2 pounds

How the tool works

One ounce is defined as exactly 28.349523125 grams. The tool multiplies or divides by that factor, so every result is exact.

These are avoirdupois ounces, the standard ounce used for food weight in the US. The tool also handles pounds and kilograms, so you can scale up for batch cooking or bread baking.

Weight ounces vs fluid ounces

The ounce here is a weight ounce. It measures mass. A fluid ounce, used for liquids, measures volume instead. They share a name but they are different units.

A recipe that lists ounces of flour, chocolate, or cheese means weight ounces, so weigh them. A recipe that lists ounces of milk or water usually means fluid ounces, so measure the volume. The rule of thumb is solids by weight, liquids by volume.

Grams have no such confusion. A gram is always a unit of weight.

Why grams beat ounces for baking

Grams are smaller and more precise than ounces, so most of the world and most serious bakers weigh in grams. A kitchen scale set to grams reads to the nearest gram; the same scale in ounces reads in clumsier steps. If your scale offers both, use grams for baking.

Common gram and ounce mistakes

  • Confusing weight ounces with fluid ounces. A weight ounce of flour and a fluid ounce of flour are different amounts.
  • Using troy ounces. Troy ounces are for precious metals and are heavier, about 31.1 grams. Food uses the avoirdupois ounce, 28.35 grams.
  • Rounding 1 ounce to 30 grams. It is 28.35 grams. Over a large recipe the 30-gram shortcut adds up.
  • Trusting a scale that only reads whole ounces for baking. Switch it to grams for the precision baking needs.

FAQ

How many grams are in an ounce?
1 ounce is 28.35 grams. This is the weight ounce used for food.
How many ounces is 100 grams?
100 grams is about 3.53 ounces, a little over three and a half ounces.
How many grams are in a pound?
1 pound is 16 ounces, which is 453.6 grams. Recipes often round it to 450 grams.
Is a gram bigger than an ounce?
No. A gram is much smaller. It takes about 28 grams to make one ounce.
Should I bake by grams or ounces?
Grams. They are a finer unit, so a gram scale is more precise than an ounce scale for baking.

Related tools and guides

¿Necesitas esta herramienta en español? Ver gramos a onzas.

Where these numbers come from

The international avoirdupois ounce is defined as exactly 28.349523125 grams. One pound is 16 ounces, exactly 453.59237 grams. These definitions are fixed by international agreement and used by NIST.

Sources

Our numbers and methodology cross-reference these authorities:

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