oztoml.org › Grams to fl oz

Grams to Fluid Ounces Converter

Turning a weight in grams into a liquid volume in fluid ounces? Weight and volume only line up once you know the liquid, so pick your ingredient below.

Grams ⇄ Fluid Ounces
g
=
fl oz
Ingredient:
Result100 g = 3.38 fl oz (Water)
Quick answer
Water is the easy case: 100 g of it takes up 3.38 US fluid ounces, because a gram of water fills a millilitre. Thicker liquids pack more weight into less space, so 100 g of honey (density 1.42) is only about 2.38 fl oz. Set the ingredient and the tool applies its density for you.

Conversion table

Grams (g)US fluid ounces (fl oz)
25 g0.85
50 g1.69
100 g3.38
150 g5.07
200 g6.76
250 g8.45
500 g16.91
1000 g33.81

How to convert Grams to fl oz

fl oz = grams ÷ (density × 29.5735)water density = 1 g/mL · reverse: grams = fl oz × density × 29.5735
grams
the weight you are starting from
fl oz
the volume it fills, in US fluid ounces
density
grams per mL for the chosen liquid
29.5735
mL in one US fluid ounce

This bridges weight and volume, which is why the ingredient matters. A single fluid ounce of water tips the scale at about 29.57 g.

Frequently asked questions

What is 100 g of water in fluid ounces?

About 3.38 US fluid ounces, because water weighs one gram per millilitre.

Why does the ingredient change the answer?

Grams weigh mass while fluid ounces measure space. A dense liquid fills fewer ounces per gram, so density decides the result.

What does a fluid ounce of water weigh?

Roughly 29.57 g, since a US fluid ounce is 29.5735 mL and water is one gram per millilitre.

How many fluid ounces is 250 g of honey?

Around 5.95 US fluid ounces, using honey's density of 1.42 g/mL.

Quick facts
100 g water
3.38 fl oz
1 fl oz water
29.57 g
Honey density
1.42 g/mL
Measures
Weight to volume