236.59
g
236.59
ml
1
cups
1
g/ml
236.59
g
236.59
ml
1
cups
1
g/ml
The Fluid Ounces to Grams Converter converts US fluid ounce measurements to gram weights for common cooking and baking liquids. This conversion is particularly useful for American recipes that use fluid ounces while international recipes use grams, or when you need to weigh liquid ingredients on a kitchen scale instead of measuring by volume.
One US fluid ounce equals 29.5735 milliliters. Just like milliliters to grams, the fluid ounce to gram conversion depends on the density of the specific ingredient. A fluid ounce of water weighs almost exactly 29.574 grams (close to 1 ounce weight — though fluid ounce and weight ounce are different units). A fluid ounce of honey, however, weighs about 42 grams due to honey's high density of 1.42 g/ml.
Understanding the distinction between fluid ounces (volume) and weight ounces (mass) is crucial. In the US, these are often confused because water — being the reference liquid — has almost the same numerical value (1 fl oz ≈ 29.574g, while 1 oz weight = 28.35g). But for any other ingredient, the values diverge significantly. Honey in fluid ounces weighs 48% more than the same number in weight ounces. Using this converter avoids that confusion entirely.
Common uses for this converter include: converting smoothie and juice recipes from volume to weight for batch production; measuring oils and fats precisely for salad dressings and marinades; converting spirits and wine measures in cocktail and culinary recipes; and working with liquid measures in nutrition tracking apps that require gram inputs.
The converter also outputs milliliters and cups. Since 1 US cup = 8 US fluid ounces, the cup conversion is simply fl oz ÷ 8 — a relationship that's easy to remember. An 8 fl oz measurement equals exactly 1 cup, while 4 fl oz is 1/2 cup.
The formula is: Grams = Fluid Ounces × (Density g/ml × 29.5735 ml/fl oz). For water: 1 fl oz × 1.000 g/ml × 29.5735 ml = 29.574g. For honey: 1 fl oz × 1.420 g/ml × 29.5735 ml = 41.99g. The milliliter output is simply fl oz × 29.5735. Cup conversion: fl oz ÷ 8 (since 1 cup = 8 fl oz).
The gram output tells you the weight to measure on a scale. Milliliter output is the same volume in metric units — useful for metric recipes. Cup output contextualizes the volume: 4 fl oz = 0.5 cups = half a cup, 16 fl oz = 2 cups. Note that UK fluid ounces are slightly different (28.413 ml), so UK recipes may give slightly different gram values.
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8 fl oz × 30.46 g/fl oz = 243.68 grams of whole milk. This is also exactly 1 cup (8 ÷ 8 = 1.0). A standard recipe calling for 1 cup of milk requires about 244 grams — slightly more than 244 ml due to milk's density slightly above water.
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2 fl oz × 41.99 g/fl oz = 83.98 grams of honey. This is also 1/4 cup. Honey is very dense — nearly 42 grams per fluid ounce compared to water's 29.6 grams per fluid ounce. This is why honey feels so heavy when poured.
One US fluid ounce of water weighs approximately 29.574 grams. Note this is different from 1 weight ounce (28.35 grams). The two systems coincidentally have similar numbers but are measuring different things (volume vs mass).
A fluid ounce (fl oz) is a unit of volume equal to 29.5735 ml. A weight ounce (oz) is a unit of mass equal to 28.35 grams. They are numerically similar only for water. For all other liquids and ingredients, the values differ based on density.
There are exactly 8 US fluid ounces in 1 US cup (236.588 ml). So 1/2 cup = 4 fl oz, 1/4 cup = 2 fl oz, and 1/3 cup ≈ 2.67 fl oz.
For water, 8 fl oz = 236.6 grams (essentially 1 cup of water ≈ 237g). For other ingredients, multiply 8 × the grams-per-fl-oz for that ingredient. For example, 8 fl oz of honey = 8 × 41.99 = 335.9 grams.
No. A UK (Imperial) fluid ounce is 28.413 ml, while a US fluid ounce is 29.574 ml — about 4% larger. This converter uses the US fluid ounce. When following UK recipes, note this difference.
One fluid ounce of vegetable oil weighs approximately 27.21 grams (29.574 ml × 0.920 g/ml). Olive oil is slightly lighter at about 26.91 grams per fluid ounce. Since oil is less dense than water, a fluid ounce of oil weighs less than a fluid ounce of water.
One fluid ounce of whole milk weighs approximately 30.46 grams (29.574 ml × 1.030 g/ml). For an 8-fl oz glass of milk (1 cup), that's about 243.7 grams. Skim milk is slightly heavier at about 30.5 grams per fluid ounce.
In the US, fluid ounces are strictly a volume measure and should only be used for liquids. However, some older American recipes misuse fluid ounces for dry ingredients (e.g., '4 fl oz of flour'), which is technically incorrect. Always use weight ounces or grams for dry ingredients.
There are approximately 33.814 US fluid ounces in 1 liter (1000 ml ÷ 29.5735 ml/fl oz). For UK Imperial fluid ounces, there are about 35.195 fl oz per liter.
Use a kitchen scale and the gram equivalents from this converter. Weigh your container empty, then add the ingredient until you reach the target gram weight for your desired fluid ounce measurement. For water-like liquids, roughly 30 grams ≈ 1 fl oz.
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