Why Convert Milliliters to US Fluid Ounces?
Converting between milliliters (mL) and us fluid ounces (fl oz (US)) is one of the most common volume conversions. Whether for engineering, cooking, travel, or science, knowing how to quickly convert mL to fl oz (US) saves time and prevents errors.
Volume conversions between mL and fl oz (US) are vital for cooking, travel, and automotive contexts. The TSA 3-1-1 rule limits carry-on liquids to 100 mL (3.4 fl oz) containers — a conversion every international traveler needs. In cooking, US recipes use cups and tablespoons while metric recipes use milliliters. For automotive purposes, fuel tank capacity is measured in liters in most countries but gallons in the US.
How to Convert Milliliters to US Fluid Ounces
To convert milliliters to us fluid ounces, use the following formula:
fl oz (US) = mL × 0.0338140227
Example: 1 mL = 0.0338140227 fl oz (US)
For example, 5 mL = 0.1690701135 fl oz (US), 10 mL = 0.338140227 fl oz (US), and 100 mL = 3.38140227 fl oz (US). Our calculator above performs this conversion instantly with full precision — no rounding errors.
Common Use Cases
- TSA carry-on liquid limit (3-1-1 rule): 100 mL = 3.38140227 fl oz (US)
- Standard soda/beer can: 330 mL = 11.15862749 fl oz (US)
- Standard water bottle: 500 mL = 16.90701135 fl oz (US)
- Small juice box: 250 mL = 8.453505675 fl oz (US)
- One tablespoon (cooking): 15 mL = 0.5072103405 fl oz (US)
Common Mistakes to Avoid
- US vs UK gallons: A US gallon (3.785 L) is smaller than a UK gallon (4.546 L). Always specify which system you're using.
- Fluid ounces vary: US fluid ounce ≠ UK fluid ounce. This converter uses US measures unless specified as UK.
- Cup measurement inconsistency: A US cup = 236.6 mL, metric cup = 250 mL, Japanese cup = 200 mL. Always verify which standard your recipe uses.
Pro Tips
- Memorize the factor: 1 mL = 0.0338140227 fl oz (US). For quick mental math, remember this base conversion.
- Quick reference: 5 mL = 0.1690701135 fl oz (US) · 10 mL = 0.338140227 fl oz (US) · 25 mL = 0.8453505675 fl oz (US) · 50 mL = 1.690701135 fl oz (US) · 100 mL = 3.38140227 fl oz (US)
- Bookmark this page: Save this converter for instant access. It works offline once loaded — no internet needed.
Milliliters to US Fluid Ounces Conversion Table
| mL | fl oz (US) |
|---|---|
| 0.01 mL | 0.000338140227 fl oz (US) |
| 0.1 mL | 0.00338140227 fl oz (US) |
| 0.5 mL | 0.01690701135 fl oz (US) |
| 1 mL | 0.0338140227 fl oz (US) |
| 2 mL | 0.0676280454 fl oz (US) |
| 5 mL | 0.1690701135 fl oz (US) |
| 10 mL | 0.338140227 fl oz (US) |
| 20 mL | 0.676280454 fl oz (US) |
| 50 mL | 1.690701135 fl oz (US) |
| 100 mL | 3.38140227 fl oz (US) |
| 500 mL | 16.90701135 fl oz (US) |
| 1000 mL | 33.8140227 fl oz (US) |
All values in this table are mathematically exact per NIST SP 811.