A fluid ounce (US) is a unit of volume used to measure liquids in the U.S. customary system. It's abbreviated as fl oz and is commonly seen in cooking, nutrition labeling, and liquid packaging. One US fluid ounce is defined as 1/128 of a US gallon, which equals exactly 29.5735 milliliters.
Despite the term "ounce" also being used for weight, a fluid ounce specifically measures liquid volume. It's important to distinguish the two, especially in recipes or products where both liquid and solid measurements appear. The US fluid ounce is a standard unit across many industries, from beverages and sauces to cleaning products and personal care items,
Uses: The fluid ounce is widely used in everyday life throughout the United States. In the kitchen, it shows up in recipes for measuring water, milk, oil, and other liquids. You'll also find it on nutrition labels, drink containers, and liquid medicine bottles. Most bottled drinks sold in the U.S., from soda cans to sports drinks, are labeled in fluid ounces.
Outside the kitchen, fluid ounces are also used to measure everyday products like shampoo, lotion, and household cleaners. Packaging labels often list fluid ounces to help shoppers gauge how much liquid is inside each bottle. In pharmacies, you may still see fluid ounces on medication packaging, though many prescriptions now use milliliters for greater accuracy and consistency.
A liter is a metric unit of volume used around the world to measure liquids and other fluid substances. It's spelled liter in American English (and litre in British English), and is abbreviated as L or l. One liter is equal to 1,000 milliliters or 0.26417 US gallons, making it a practical size for measuring both household and commercial quantities.
As the base unit of volume in the metric system, the liter is widely used in cooking, grocery labeling, beverages, scientific measurements, and industrial applications. From water bottles and milk cartons to chemical solutions and fuel containers, the liter provides a universal standard that's easy to work with and convert.
Uses: The liter is one of the most widely used volume units globally. In daily life, it's found on drink labels, cleaning products, and food packaging. Everyday items like juice, milk, and bottled water are often sold in whole or fractional liters, making it easy for consumers to understand quantity at a glance.
The liter is used in the kitchen to measure liquids in recipes or for serving sizes. In healthcare, the liter is used for preparing IV fluids, running lab tests, and mixing medications. It’s also used in the auto industry to measure things like engine oil and fuel efficiency. Because it’s easy to understand and widely accepted, the liter continues to be a go-to unit across many areas of daily life.
1 fl oz = 0.029574 L
Let’s say you want to convert 100 fl oz to L.
Using the formula:
100 × 0.029574 = 2.957 L
So, 100 fl oz is approximately 2.957 L.
| Fluid Ounce (US) (fl oz) | Liter (L) |
|---|---|
| 1 fl oz | 0.03 L |
| 2 fl oz | 0.059 L |
| 3 fl oz | 0.089 L |
| 4 fl oz | 0.118 L |
| 5 fl oz | 0.148 L |
| 6 fl oz | 0.177 L |
| 7 fl oz | 0.207 L |
| 8 fl oz | 0.237 L |
| 9 fl oz | 0.266 L |
| 10 fl oz | 0.296 L |
| 11 fl oz | 0.325 L |
| 12 fl oz | 0.355 L |
| 13 fl oz | 0.384 L |
| 14 fl oz | 0.414 L |
| 15 fl oz | 0.444 L |