Unit Converter
Convert From Millilitres to Fluid Ounces and Vice Versa
Millilitres ↔ Fluid Ounces
Type in either millilitres or fluid ounces — it’ll convert to the other automatically!
💧 What is a Millilitre (mL)?
A millilitre is a unit of volume in the metric system, commonly used to measure small quantities of liquid. 1 millilitre = 0.001 litres or roughly 20 drops of water. It's widely used in medicine, recipes, and beverage labeling.
🥤 What is a Fluid Ounce (fl oz)?
A fluid ounce is a unit of liquid volume in the imperial and U.S. customary systems. In the U.S., 1 fluid ounce = 29.5735 millilitres. It's commonly used to measure beverages, cooking liquids, and personal care products.
🧠 Quick Comparison
| Unit | Equivalent | Used In |
|---|---|---|
| 1 millilitre (mL) | 0.0338 fl oz | Global (medicine, recipes, packaging) |
| 1 fluid ounce (US) | 29.5735 mL | U.S. (drinks, health, skincare) |
🧮 How to Convert
Millilitres to Fluid Ounces: fl oz = mL × 0.0338
Fluid Ounces to Millilitres: mL = fl oz × 29.5735
Example:
100 mL × 0.0338 = 3.38 fl oz
💡 Pro Tip
Always double-check whether the recipe or product label refers to **US fluid ounces** or **UK fluid ounces**—they are different! This tool uses the US standard (1 fl oz = 29.5735 mL).
🎉 Did You Know?
The term “ounce” originally referred to both mass and volume—this is why we now specify “fluid ounce” for liquids!
🥤 Real-World Volume Examples
- 5 mL – A teaspoon of cough syrup
- 30 mL (1 fl oz) – A shot glass or skincare serum
- 240 mL (8 fl oz) – A standard glass of water
- 500 mL – A typical soft drink bottle
📊 Millilitres to Fluid Ounces Conversion Chart
| Millilitres (mL) | Fluid Ounces (fl oz) |
|---|---|
| 5 | 0.17 |
| 15 | 0.51 |
| 30 | 1.01 |
| 100 | 3.38 |
| 250 | 8.45 |
| 500 | 16.91 |
| 1000 | 33.81 |
📜 Timeline: The Rise of the Fluid Ounce
- 14th century: Ounce used as both mass and liquid unit in England
- 1824: UK formalizes Imperial fluid ounce (28.413 mL)
- 1893: U.S. defines 1 fl oz = 29.5735 mL
🌍 When to Use Millilitres vs Fluid Ounces
- 🧃 Millilitres: Used globally on labels, cooking, and health products
- 🥤 Fluid Ounces (US): Common in the United States for beverages and cosmetics
- 🇬🇧 Fluid Ounces (UK): Less common, but used in older British recipes (28.413 mL)