Convert volume units — liters, gallons, cups, milliliters, cubic meters, pints, quarts.
| Unit | Name | Value |
|---|---|---|
| L | Liter | 0.0295735 |
| mL | Milliliter | 29.5735 |
| m³ | Cubic Meter | 0.0000295735 |
| gal(US) | US Gallon | 0.0078124959 |
| gal(UK) | UK Gallon | 0.0065052606 |
| qt | US Quart | 0.031249967 |
| pt | US Pint | 0.0625 |
| cup | US Cup | 0.125 |
Common fluid ounce values converted to liter — factor: 1 fl oz = 0.02957 L
| Fluid Ounce (fl oz) | Liter (L) | Context |
|---|---|---|
| 0.5 fl oz | 0.01479 L | Half ounce |
| 1 fl oz | 0.02957 L | Shot |
| 2 fl oz | 0.05915 L | Double shot |
| 4 fl oz | 0.1183 L | Half cup |
| 6 fl oz | 0.1774 L | One cup |
| 8 fl oz | 0.2366 L | One cup |
| 12 fl oz | 0.3549 L | Soda can |
| 16 fl oz | 0.4732 L | One pint |
| 20 fl oz | 0.5915 L | Large cup |
| 32 fl oz | 0.9464 L | One quart |
| 64 fl oz | 1.893 L | Half gallon |
| 128 fl oz | 3.785 L | One gallon |
| 256 fl oz | 7.571 L | 2 gallons |
| 512 fl oz | 15.14 L | 4 gallons |
| 1,024 fl oz | 30.28 L | 8 gallons |
Converting fluid ounce to liter comes up frequently in cooking, chemistry, medicine, and engineering. A recipe written in metric units may need to be adapted for a kitchen using liter, or a laboratory protocol may specify volumes in fluid ounce that need to be measured with equipment calibrated in liter.
In everyday use, knowing that 5 fl oz = 0.1479 L and 10 fl oz = 0.2957 L covers most common situations. For bulk calculations, 100 fl oz = 2.957 L is a useful anchor. The reverse conversion — liter back to fluid ounce — uses the factor 33.81, so 1 L = 33.81 fl oz.
All conversions use the internationally recognized factor of exactly 1 fl oz = 0.02957 L. Calculations are performed in IEEE 754 double-precision floating point, giving accuracy to at least 8 significant figures — more than sufficient for any practical application.
Formula: Liter = Fluid Ounce × 0.0295735
Multiply any fluid ounce value by 0.0295735 to get liter. One fluid ounce equals 0.0295735 L.
Reverse: Fluid Ounce = Liter × 33.814057
Fluid ounces × 0.02957 = liters. Round to × 0.03 (1.5% high).
Memorize: 33.8 fl oz per liter for quick reverse checks.
A standard can is 12 fl oz = 355 mL = 0.355 L.
Labels product nutrition facts and serving sizes in fluid ounces as required by FDA.
Measures spirit pours and mixers in fl oz using jiggers for cocktail consistency.
Tracks soda fountain syrup and cup sizes (12, 16, 20, 32 fl oz) for inventory.
Designs bottle fill levels in fluid ounces for US retail compliance.
Recommends daily fluid intake for children in fluid ounces by age group.
Compares unit prices per fluid ounce on beverage labels to find the best value.
The US fluid ounce is defined as 1/128 of a US gallon, exactly 29.5735 mL. The US and UK fl oz differ: the US is 29.57 mL while the Imperial fl oz is 28.41 mL.
Fluid ounces appear on every US beverage container: a soda can is 12 fl oz, a water bottle is 16.9 fl oz, and a US shot glass is 1.5 fl oz.
Interesting fact: Despite sharing the name 'ounce', the fluid ounce measures volume, not weight. One fl oz of water weighs about 1.04 oz, but one fl oz of honey weighs about 1.5 oz.
The liter was introduced by the French metric system in 1793, defined as the volume of one kilogram of pure water at 4°C. The word derives from the older French unit litron, from Medieval Latin litra. It was redefined in 1964 as exactly 1 cubic decimeter.
France adopted the liter as part of revolutionary metric standardization, spreading across Europe with Napoleonic expansion. Today it is the standard unit for liquids in most of the world, from soda bottles to fuel pumps.
Interesting fact: A liter of water at 4°C weighs almost exactly 1 kilogram, which is why the kilogram was originally defined through it.