Fluid Ounces to Liters Converter (fl oz ⇄ L)
Convert between fluid ounces and liters instantly. Supports US, UK (imperial), and metric fluid ounces, plus reverse liters to ounces.
Key conversions (US fl oz)
- 1 fl oz ≈ 0.02957 L
- 8 fl oz ≈ 0.237 L
- 16 fl oz ≈ 0.473 L
- 32 fl oz ≈ 0.946 L
Liters to US fl oz
- 0.5 L ≈ 16.91 fl oz
- 1 L ≈ 33.81 fl oz
- 1.5 L ≈ 50.72 fl oz
- 2 L ≈ 67.63 fl oz
Bottle sizes (approx.)
- 12 fl oz ≈ 0.355 L (soda can)
- 16.9 fl oz ≈ 0.5 L (water bottle)
- 33.8 fl oz ≈ 1 L
How to convert fluid ounces to liters
A fluid ounce (fl oz) measures volume, while a liter (L) is the standard metric unit for volume. The exact conversion factor depends on whether you are using US, UK (imperial), or metric fluid ounces.
Formulas
US fluid ounces to liters
liters = fluid ounces (US) × 0.0295735296
UK (imperial) fluid ounces to liters
liters = fluid ounces (UK) × 0.0284130625
Metric fluid ounces (exact 100 mL) to liters
liters = fluid ounces (metric) × 0.1
To go the other way (liters to fluid ounces), divide by the same factor:
Liters to US fluid ounces
US fl oz = liters ÷ 0.0295735296 ≈ liters ×
33.8140227
Liters to UK fluid ounces
UK fl oz = liters ÷ 0.0284130625 ≈ liters ×
35.1950797
Step‑by‑step example
Example: Convert 16 US fl oz to liters.
- Use the US conversion factor: 1 fl oz = 0.0295735296 L.
- Multiply: 16 × 0.0295735296 = 0.4731764736 L.
- Round to 3 decimal places: 16 fl oz ≈ 0.473 L.
Common fl oz to liters conversions (US)
| US fl oz | Liters (L) |
|---|---|
| 1 fl oz | 0.0296 L |
| 4 fl oz | 0.1183 L |
| 8 fl oz | 0.2366 L |
| 12 fl oz | 0.355 L |
| 16 fl oz | 0.4732 L |
| 20 fl oz | 0.5915 L |
| 24 fl oz | 0.710 L |
| 32 fl oz | 0.9464 L |
| 64 fl oz | 1.893 L |
| 128 fl oz (1 US gal) | 3.785 L |
Common liters to fl oz conversions (US)
| Liters (L) | US fl oz |
|---|---|
| 0.25 L | 8.45 fl oz |
| 0.5 L | 16.91 fl oz |
| 0.75 L | 25.36 fl oz |
| 1 L | 33.81 fl oz |
| 1.5 L | 50.72 fl oz |
| 2 L | 67.63 fl oz |
| 3 L | 101.44 fl oz |
| 3.785 L (1 US gal) | 128 fl oz |
US vs UK fluid ounces – which should you use?
Many online converters ignore the difference between US and UK fluid ounces. This can introduce noticeable errors for larger volumes.
- US fluid ounce: 1 US fl oz = 29.5735295625 mL
- UK (imperial) fluid ounce: 1 imperial fl oz = 28.4130625 mL
Use US fl oz for American recipes, US nutrition labels, and US drink sizes. Use UK fl oz for older British recipes and references to imperial pints or gallons.
FAQ
How many liters is 1 fluid ounce?
Using US units, 1 fl oz ≈ 0.02957 L. Using UK units, 1 fl oz ≈ 0.02841 L.
How many fluid ounces are in 1 liter?
1 liter is approximately 33.81 US fl oz or 35.20 UK fl oz.
Is a fluid ounce the same as an ounce?
No. A fluid ounce measures volume, while an ounce (oz) measures weight. They are only numerically similar for specific substances (like water) under specific conditions.
Can I use this converter for cooking and water bottles?
Yes. This tool is ideal for converting recipe quantities, drink sizes, and water‑intake goals between fluid ounces and liters. Just be sure to select the correct fluid ounce system (US vs UK).