Ounces to Milliliters Converter
Convert fluid ounces (fl oz) to milliliters (ml) and vice versa with precision
Volume Conversion
US fluid ounces
Milliliters (metric system)
Conversion Results
Conversion formula: 1 US fl oz = 29.5735 ml
Difference: US and Imperial fluid ounces differ by approximately 4%
Common Conversions
| Fluid Ounces | Milliliters (US) | Common Use |
|---|---|---|
| 1 fl oz | 29.6 ml | Standard shot glass |
| 2 fl oz | 59.1 ml | Small medicine dose |
| 4 fl oz | 118.3 ml | Half cup |
| 6 fl oz | 177.4 ml | Small juice glass |
| 8 fl oz | 236.6 ml | One cup / glass of water |
| 12 fl oz | 354.9 ml | Standard soda can |
| 16 fl oz | 473.2 ml | One pint |
| 32 fl oz | 946.4 ml | One quart |
| 64 fl oz | 1892.7 ml | Half gallon |
| 128 fl oz | 3785.4 ml | One gallon |
Quick Reference
Conversion Tips
Always verify which type of fluid ounce is being used in recipes
8 US fluid ounces equals approximately 237 ml (1 cup)
For precise measurements in cooking, use a kitchen scale
Don't confuse fluid ounces (volume) with ounces (weight)
Practical Examples
Understanding Ounces to Milliliters Conversion
What is a Fluid Ounce?
A fluid ounce (fl oz) is a unit of volume used to measure liquids. Despite its name, it measures volume, not weight. There are two main types of fluid ounces still in use today, which differ slightly in their actual volume.
Types of Fluid Ounces
- •US Fluid Ounce: Used in the United States, equals approximately 29.5735 ml. Based on the US gallon (128 fl oz = 1 gallon).
- •Imperial Fluid Ounce: Used in the UK and Commonwealth countries, equals approximately 28.4131 ml. Based on the Imperial gallon (160 fl oz = 1 gallon).
Conversion Formulas
US Fluid Ounce to Milliliters
ml = fl oz × 29.5735
Example: 8 fl oz × 29.5735 = 236.59 ml
Imperial Fluid Ounce to Milliliters
ml = fl oz × 28.4131
Example: 8 fl oz × 28.4131 = 227.30 ml
⚠️ Important: The ~4% difference between US and Imperial fluid ounces may seem small, but it matters in precise measurements, especially in scientific work or large-scale cooking.
When to Use Each Conversion
🍳 Cooking & Baking
Use US fluid ounces for American recipes, Imperial for British recipes. The difference usually won't affect most home cooking.
💊 Medicine & Health
Always use the exact conversion specified on the label. Medical dosing requires precision.
🔬 Science & Lab Work
Use metric (ml) whenever possible for consistency. Know which system your equipment uses.