Ounces to Milliliters Converter (oz to mL)
Convert weight ounces to milliliters (oz to mL) for any ingredient. Select a substance or enter a custom density. See results in mL, liters, fluid ounces, and cups.
VOLUME IN MILLILITERS
141.7 mL
LITERS
0.1417 L
FLUID OUNCES
4.79 fl oz
CUPS
0.60 cups
FORMULA
5Γ28.35Γ·1
Ounces to Milliliters β Water
| Ounces | Milliliters | Fluid Oz | Cups |
|---|---|---|---|
| 0.5 oz | 14.2 mL | 0.48 fl oz | 0.06 cups |
| 1 oz | 28.3 mL | 0.96 fl oz | 0.12 cups |
| 2 oz | 56.7 mL | 1.92 fl oz | 0.24 cups |
| 3 oz | 85.0 mL | 2.88 fl oz | 0.36 cups |
| 4 oz | 113.4 mL | 3.83 fl oz | 0.48 cups |
| 5 oz | 141.7 mL | 4.79 fl oz | 0.60 cups |
| 8 oz | 226.8 mL | 7.67 fl oz | 0.96 cups |
| 10 oz | 283.5 mL | 9.59 fl oz | 1.20 cups |
| 12 oz | 340.2 mL | 11.50 fl oz | 1.44 cups |
| 16 oz | 453.6 mL | 15.34 fl oz | 1.92 cups |
How to Convert Ounces (Weight) to Milliliters
This converter is for weight ounces (oz), not fluid ounces. Since oz measures weight and mL measures volume, you need the substance's density:
Example: 5 oz of water (density 1.00 g/mL)
= 5 Γ 28.3495 Γ· 1.00 = 141.7 mL
Example: 5 oz of olive oil (density 0.91 g/mL)
= 5 Γ 28.3495 Γ· 0.91 = 155.8 mL
Example: 5 oz of honey (density 1.43 g/mL)
= 5 Γ 28.3495 Γ· 1.43 = 99.1 mL
Key insight: Heavier substances (higher density) produce fewer mL per ounce, while lighter substances produce more mL.
Ounces to Milliliters β By Ingredient (for 1 oz)
| Ingredient | Density | 1 oz = | 8 oz = |
|---|---|---|---|
| Water | 1.00 g/mL | 28.3 mL | 226.8 mL |
| Whole Milk | 1.03 g/mL | 27.5 mL | 220.2 mL |
| All-purpose Flour | 0.53 g/mL | 53.5 mL | 428.0 mL |
| Granulated Sugar | 0.85 g/mL | 33.4 mL | 266.8 mL |
| Butter | 0.91 g/mL | 31.2 mL | 249.2 mL |
| Olive Oil | 0.91 g/mL | 31.2 mL | 249.2 mL |
| Honey | 1.43 g/mL | 19.8 mL | 158.6 mL |
| Cocoa Powder | 0.52 g/mL | 54.5 mL | 436.1 mL |
| Vegetable Oil | 0.92 g/mL | 30.8 mL | 246.5 mL |
| Heavy Cream | 1.01 g/mL | 28.1 mL | 224.6 mL |
β οΈ Weight Ounce vs. Fluid Ounce β Critical Difference
US recipes use two completely different units that share the word "ounce":
| Feature | Weight Ounce (oz) | Fluid Ounce (fl oz) |
|---|---|---|
| Measures | Weight / mass | Volume |
| Tool needed | Kitchen scale | Measuring cup |
| 1 unit of water = | 28.35 mL | 29.57 mL |
| Depends on density? | Yes β changes by ingredient | No β always the same |
| More accurate? | β Yes β professional bakers prefer this | Less accurate for dry goods |
| Example in recipe | "4 oz chocolate" (weigh it) | "4 fl oz vanilla" (pour it) |
Common Baking Ingredients β oz to mL
| Ingredient | 4 oz = | 8 oz = | 16 oz (1 lb) = |
|---|---|---|---|
| All-purpose flour | 214 mL | 428 mL | 856 mL |
| Granulated sugar | 133 mL | 267 mL | 534 mL |
| Brown sugar (packed) | 130 mL | 260 mL | 519 mL |
| Butter | 125 mL | 249 mL | 499 mL |
| Chocolate chips | 118 mL | 236 mL | 472 mL |
| Cocoa powder | 218 mL | 436 mL | 872 mL |
| Cream cheese | 113 mL | 227 mL | 454 mL |
When to Use Weight vs. Volume in US Recipes
- Use weight (oz) for: flour, sugar, chocolate, cheese, meat, butter β anywhere precision matters
- Use volume (fl oz) for: water, milk, oil, juice β pourable liquids
- Professional bakeries always weigh β measuring by volume can cause 10β20% variation in flour, drastically affecting results
- European and Asian recipes typically use grams (weight), so knowing ozβmL helps when converting international recipes
What Is an Ounce?
An ounce (oz) is a US customary unit of weight equal to 1/16 of a pound or 28.3495 grams. In cooking, "ounces" without the "fluid" prefix typically means weight β check your recipe carefully. Most US kitchen scales can toggle between ounces and grams.
What Is a Milliliter?
A milliliter (mL) is a metric unit of volume equal to 1/1,000 of a liter or 1 cubic centimeter. It is the international standard for measuring small liquid volumes in cooking, medicine, and science.