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Need to convert fluid ounces to grams? This online converter helps you quickly and accurately convert fl oz (fluid ounces) to grams for liquids like water, milk, oil, and more. It’s perfect for cooking, baking, health, and science measurements.
A fluid ounce (fl oz) is a unit of volume commonly used in the United States. It measures how much liquid is inside a container. One U.S. fluid ounce is equal to about 29.57 milliliters (ml). Fluid ounces are often used in recipes and beverage labels.
A gram is a unit of weight in the metric system. It tells you how heavy something is. While fl oz measures volume, grams measure weight. To convert between them, you need to know the density of the liquid (for example, water and oil have different densities).
The general formula to convert fluid ounces to grams is:
Grams = Fluid Ounces × Density × 29.57
👉 For water and similar liquids, the density is close to 1. So you can use:
Grams ≈ Fluid Ounces × 29.57
Grams = 5 × 29.57 = 147.85 grams
This means 5 fluid ounces of water is about 147.85 grams.
The conversion changes depending on the liquid. For example:
So always check the density if you're not using water.
Use this tool to make your kitchen or lab tasks easier and more precise. Just enter the fl oz and get the grams instantly!