Fluid Ounces to Liters Converter
Convert US fluid ounces to liters — 33.814 fl oz make one liter. Results update as you type; exact factors shown.
One US fluid ounce is 0.0296 liters — see the exact factor, not a rounded rule of thumb.
How the fluid ounces to liters converter works
Volumes convert through the liter (exactly 1 dm³). The US gallon is exactly 3.785411784 L (231 cubic inches); the imperial gallon is exactly 4.54609 L. A US fluid ounce is 29.5735 mL, an imperial fluid ounce 28.4131 mL; a US pint is 16 US fl oz, an imperial pint 20 imperial fl oz.
The US uses customary units (US gallon, short ton, °F) in daily life; NIST SP 811 gives the exact SI factors.
Common volume conversions
| From | To | Units |
|---|---|---|
| 8 US fl oz | 0.2366 L | US fluid ounces to liters |
| 12 US fl oz | 0.3549 L | US fluid ounces to liters |
| 16 US fl oz | 0.4732 L | US fluid ounces to liters |
| 16.9 US fl oz | 0.4998 L | US fluid ounces to liters |
| 20 US fl oz | 0.5915 L | US fluid ounces to liters |
| 24 US fl oz | 0.7098 L | US fluid ounces to liters |
| 32 US fl oz | 0.9464 L | US fluid ounces to liters |
| 33.814 US fl oz | 1 L | US fluid ounces to liters |
| 40 US fl oz | 1.1829 L | US fluid ounces to liters |
| 64 US fl oz | 1.8927 L | US fluid ounces to liters |
| 100 US fl oz | 2.9574 L | US fluid ounces to liters |
| 128 US fl oz | 3.7854 L | US fluid ounces to liters |
Units in this converter and their exact factors
| Unit | Symbol | One unit in liters |
|---|---|---|
| milliliter | mL | 0.001 liter |
| liter | L | 1 liter |
| cubic meter | m³ | 1,000 liter |
| teaspoon (metric) | tsp | 0.005 liter |
| tablespoon (metric) | tbsp | 0.015 liter |
| cup (metric) | cup | 0.25 liter |
| US fluid ounce | US fl oz | 0.0295735296 liter |
| US cup | US cup | 0.2365882365 liter |
| US pint | US pt | 0.473176473 liter |
| US gallon | US gal | 3.785411784 liter |
| imperial fluid ounce | imp fl oz | 0.0284130625 liter |
| imperial pint | imp pt | 0.56826125 liter |
| imperial gallon | imp gal | 4.54609 liter |
| cubic foot | ft³ | 28.316846592 liter |
FAQFrequently asked questions about volume conversion
How many liters is 16.9 fl oz?
Half a liter — the standard bottled-water size.
How many fl oz in a liter?
33.814 US.
What is 128 fl oz?
One US gallon, which is 3.785 liters.
Which fluid ounce is this?
The US customary one, 29.574 mL.
How do I convert quickly?
Divide by about 34, or by 30 for a rough milliliter count.
Where these figures come from
- BIPM — The International System of Units (SI Brochure, 9th edition) — definitions of the base and derived units.
- NIST Special Publication 811 — Guide for the Use of the International System of Units — the exact conversion factors used here.
- National Institute of Standards and Technology (NIST) — United States's national measurement authority.
Last checked: September 2026. Conversion factors are fixed by definition and do not change with tax years or regulations.