There are 33.814 fluid ounces in a liter. There are 16.9 fluid ounces in a half-liter bottle (½ liter or 0.5 L). Additionally, there are 0.0296 liters in one ounce. This guide includes everything you need to know about ounces, liters, and converting liters to ounces and vice versa (along with conversion charts).
In this article:
- What is a liter?
- What is an ounce?
- How many ounces in a liter?
- Convert liters to ounces
- How many liters in an ounce?
- Convert ounces to liters
The liter and the ounce represent different systems of measurement – metric and imperial. The metric system measures volume in liters and milliliters while the imperial system measures volumes in fluid ounces, pints, quarts, and gallons.
The metric system has units that are related to each other by powers of ten, so conversion within the system is easier. On the other hand, converting between the metric and imperial systems like kilograms to pounds, grams to ounces, or liters to ounces, requires some effort for multiplication or division, often resulting in numbers with decimals or fractions.
What is a liter?
A liter is equal to 33.814 fluid ounces, 0.264 gallons, and 1000 milliliters.
The liter (or litre, as it is spelled in British English), is a unit of volume in the metric system, which was first introduced in France during the French Revolution in the late 18th century. The definition of the liter was changed a few times.
The first definition of a liter was established in 1795, and it was defined as one cubic decimeter. However, in 1901, it was redefined as the volume of one kilogram of pure water at the temperature of its maximum density. Later, in 1964, it was redefined again as one cubic decimeter (the original definition).
What is an ounce?
An ounce is a unit of measurement of the imperial system that can be used for both liquid and dry ingredients. As a unit of weight, an ounce is approximately 28.35 grams which is 1/16 of a pound.
A fluid ounce is a measure of volume that is used for liquids. One US fluid ounce is equal to 0.0296 liters, and 29.5735 milliliters.
The term “ounce” comes from the Latin word “uncia,” which represented 1/12 of a Roman copper bar, which was utilized as a tool for measuring both an ounce’s weight and an inch’s length.
Fluid ounces in the US vs. other countries
In the US system, one fluid ounce is approximately 29.5735 milliliters, while in the UK or imperial system, it is 28.4131 milliliters.
How many ounces are in a liter?
There are 33.814 ounces in a liter. This refers to US fluid ounces.
How many ounces are in a half liter? There are 16.9 ounces in a half (½) liter.
How many ounces are in a quarter liter? There are 8.454 ounces in a quarter (¼) liter.
How many ounces are in 2 liters? There are 67.6 fluid ounces in 2 liters.
Why the ounces in a liter are different in the US and other countries?
In the US, the US customary system is used which is based on the imperial system, however, there are some differences between the US customary system and the imperial system.
In the US customary system, ounces for liquids are referred to as ‘US fluid ounces.’ In the traditional imperial system, they are called ‘imperial fluid ounces.’
The difference is not just in the name, but also in the value. One liter has 33.814 US fluid ounces but 35.2 imperial fluid ounces.
Convert liters to ounces
There are 33.814 fluid ounces per liter. So, to convert any number of liters to fluid ounces, we can multiply the number of liters by 33.814. For example, to convert 5 liters to ounces, we will multiply 5 by 33.814: 5 liters x 33.814 = 169.07 fluid ounces
Liters to ounces conversion chart
The following chart refers to the conversion of liters to US fluid ounces and cups.
The following conversions refer to US fluid ounces.
- 0.03 liters is equal to 1 ounce (oz)
- 0.05 liters is equal to 1.69 ounces (oz)
- 0.1 liters is equal to 3.38 ounces (oz)
- 0.5 liters is equal to 16.91 ounces (oz)
- 1 liter is equal to 33.814 ounces (oz)
- 1.25 liters is equal to 42.268 ounces (oz)
- 1.5 liters is equal to 50.72 ounces (oz)
- 1.75 liters is equal to 59.17 ounces (oz)
- 2 liters is equal to 67.63 ounces (oz)
- 2.5 liters is equal to 84.54 ounces (oz)
- 3 liters is equal to 101.44 ounces (oz)
- 3.5 liters is equal to 118.35 ounces (oz)
- 3.7 liters is equal to 125.11 ounces (oz)
- 4 liters is equal to 135.26 ounces (oz)
- 5 liters is equal to 169.07 ounces (oz)
- 6 liters is equal to 202.88 ounces (oz)
- 7 liters is equal to 236.7 ounces (oz)
- 8 liters is equal to 270.5 ounces (oz)
- 9 liters is equal to 304.33 ounces (oz)
- 10 liters is equal to 338.14 ounces (oz)
Liters to ounces conversion in the imperial system
In the imperial system, there are 35.2 imperial fluid ounces in a liter. So, to convert liters to imperial fluid ounces, we will multiply by 35.2.
For example, 5 liters to imperial fluid ounces conversion will be as below: 5 liters x 35.2 = 176 imperial fluid ounces
How many liters are in an ounce?
There are 0.0296 liters in one ounce.
Convert ounces to liters
To convert, US fluid ounces to liters, you can divide the ounces by 33.814. To convert, imperial fluid ounces to liters, you can divide the ounces by 35.2.
Ounces to liters conversion chart
The following chart refers to the conversion of US fluid ounces to liters.
US fluid ounces to liters conversions:
- 1 ounce (oz) is equal to 0.0296 liters
- 2 ounces (oz) is equal to 0.059 liters
- 3 ounces (oz) is equal to 0.089 liters
- 4 ounces (oz) is equal to 0.118 liters
- 6 ounces (oz) is equal to 0.177 liters
- 7 ounces (oz) is equal to 0.207 liters
- 8 ounces (oz) is equal to 0.237 liters
- 10 ounces (oz) is equal to 0.296 liters
- 12 ounces (oz) is equal to 0.355 liters
- 16.9 ounces (oz) is equal to 0.5 liters
- 18 ounces (oz) is equal to 0.532 liters
- 24 ounces (oz) is equal to 0.71 liters
- 30 ounces (oz) is equal to 0.887 liters
- 32 ounces (oz) is equal to 0.946 liters
- 33.814 ounces (oz) is equal to 1 liter
- 40 ounces (oz) is equal to 1.183 liters
- 50 ounces (oz) is equal to 1.479 liters
- 64 ounces (oz) is equal to 1.893 liters
- 96 ounces (oz) is equal to 2.839 liters
- 100 ounces (oz) is equal to 2.957 liters
Use of the metric and imperial systems globally
The metric system is used in most of the countries and the imperial system is used in the US, Liberia, and Myanmar. However, imperial units are still used in certain contexts in other countries, such as for beer, fuel, and fuel efficiency.
Takeaway
One liter is equal to 33.814 fluid ounces, while a half-liter (0.5 L) is equal to 16.9 fluid ounces. There are 0.0296 liters in one ounce. To convert liters to ounces, we can multiply the liters by 33.814 and to convert ounces to liters, we can divide the ounces by 33.814.
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