Liters to Ounces: Weight, US and UK Fluid Ounces
Convert liters to ounces by weight using liquid density, or convert liters to US and UK fluid ounces by volume.
| Liquid | Ounces (oz) |
|---|
How to Use the Liters to Ounces Converter
Enter the amount of liters you want to convert, then choose the type of ounce:
- Ounces (oz) – Weight: Converts liters of a liquid to ounces by weight. You must select a liquid or enter a custom density.
- US fluid ounces (US fl oz) – Volume: Converts liters directly to US fluid ounces. No liquid or density is needed.
- UK fluid ounces (UK fl oz) – Volume: Converts liters directly to UK fluid ounces. No liquid or density is needed.
The calculator starts with 1 liter and Ounces (oz) – Weight, but no liquid is selected automatically. Choose a liquid before pressing Convert.
The result shows the converted amount along with the formula or conversion factor used.
Liters to Ounces: What Does “Ounce” Mean?
There is an important difference between an ounce (oz) and a fluid ounce (fl oz).
An ounce (oz) is a unit of mass or weight. Converting liters to ounces by weight requires the liquid's density because different liquids have different weights for the same volume.
A US fluid ounce and a UK fluid ounce are units of volume. They can be converted from liters directly because both liters and fluid ounces measure volume.
So, 1 liter does not have one universal value in ounces.
For example, 1 liter is approximately:
- 33.814 US fluid ounces by volume
- 35.195 UK fluid ounces by volume
- 35.27 ounces by weight for water, using a density of 1.00 kg/L
1 Liter at a Glance
| Conversion | Result |
|---|---|
| 1 liter to US fluid ounces | 33.814 US fl oz |
| 1 liter to UK fluid ounces | 35.195 UK fl oz |
| 1 liter of water to ounces by weight | ≈ 35.27 oz |
| 1 liter of water to grams | 1,000 g |
| 1 liter to milliliters | 1,000 mL |
The weight result changes when the liquid changes, because density changes. The same is true if you convert liters to grams instead of ounces.
Liters to Ounces by Weight
Liters measure volume, while ounces measure mass or weight. Because these are different types of measurements, you need the liquid's density to make the conversion.
If the density is given in kg/L, use:
ounces = liters × density × 35.27396
For example, using water with a density of 1.00 kg/L:
1 × 1.00 × 35.27396 ≈ 35.27 oz
So 1 liter of water weighs about 35.27 ounces.
A liter of honey will weigh more than a liter of water because honey is denser. A liter of vegetable oil will weigh less because its density is lower. The same density figure also turns a liter straight into kilograms if metric units suit you better.
Common Weight Examples
| Liquid | Approx. density (kg/L) | 1 L in ounces |
|---|---|---|
| Water | 1.00 | 35.27 oz |
| Whole milk | 1.03 | 36.33 oz |
| Vegetable oil | 0.92 | 32.45 oz |
| Olive oil | 0.91 | 32.10 oz |
| Honey | 1.42 | 50.09 oz |
These values are approximate because liquid density can vary with temperature, composition, and product.
Liters to US Fluid Ounces
US fluid ounces measure volume, so no liquid density is required.
The conversion is:
US fl oz = liters × 33.8140227
Examples:
| Liters | US fluid ounces |
|---|---|
| 0.5 L | 16.907 US fl oz |
| 1 L | 33.814 US fl oz |
| 2 L | 67.628 US fl oz |
| 5 L | 169.070 US fl oz |
Therefore, 1 liter equals approximately 33.814 US fluid ounces.
This is a volume conversion, not a weight conversion.
Liters to UK Fluid Ounces
UK fluid ounces, also called imperial fluid ounces, are slightly different from US fluid ounces.
The conversion is:
UK fl oz = liters × 35.1950797
Examples:
| Liters | UK fluid ounces |
|---|---|
| 0.5 L | 17.598 UK fl oz |
| 1 L | 35.195 UK fl oz |
| 2 L | 70.390 UK fl oz |
| 5 L | 175.975 UK fl oz |
Therefore, 1 liter equals approximately 35.195 UK fluid ounces.
UK fluid ounces measure volume, so the liquid itself does not affect the conversion.
Ounces vs. Fluid Ounces
| Unit | Measures | Does density matter? | 1 liter |
|---|---|---|---|
| Ounce (oz) | Mass/weight | Yes | Depends on liquid |
| US fluid ounce (US fl oz) | Volume | No | 33.814 US fl oz |
| UK fluid ounce (UK fl oz) | Volume | No | 35.195 UK fl oz |
This distinction is important when someone asks how many ounces are in a liter. If they mean ounces by weight, you need to know the liquid. If they mean fluid ounces, you also need to know whether they are using the US or UK system.
Liters to Ounces Formula
For ounces by weight, when density is expressed in kg/L:
oz = L × density × 35.27396
For US fluid ounces:
US fl oz = L × 33.8140227
For UK fluid ounces:
UK fl oz = L × 35.1950797
The first formula depends on density. The other two are direct volume conversions.
Frequently Asked Questions
Are ounces and fluid ounces the same?
No. An ounce (oz) is a unit of mass or weight, while a fluid ounce (fl oz) is a unit of volume. A liter can be converted directly to US or UK fluid ounces because both measure volume. Converting liters to ounces by weight is different, because the result depends on the density of the liquid. For example, 1 liter of water weighs about 35.27 ounces at a density of 1.00 kg/L, while 1 liter of honey weighs about 50.09 ounces.
How many US fluid ounces are in 1 liter?
There are approximately 33.814 US fluid ounces in 1 liter. This is a volume conversion and does not depend on what liquid is inside the container. The calculation is 1 × 33.8140227 = 33.8140227 US fl oz. This value should not be confused with ounces by weight, because a regular ounce measures mass while a US fluid ounce measures volume.
How many UK fluid ounces are in 1 liter?
There are approximately 35.195 UK fluid ounces in 1 liter. UK fluid ounces are based on the imperial measurement system and are slightly smaller than US fluid ounces. The calculation is 1 × 35.1950797 = 35.1950797 UK fl oz. This is a volume conversion, so the type of liquid does not change the result.
How many ounces does 1 liter of water weigh?
Using a water density of 1.00 kg/L, 1 liter of water weighs approximately 35.27 ounces. The calculation is 1 × 1.00 × 35.27396. Water's density shifts a little with temperature, so very precise work calls for the density at the temperature you are measuring at.
Why does the weight of a liter change between liquids?
A liter measures volume, but different liquids have different densities. Density describes how much mass is contained in a given volume. A denser liquid contains more mass in one liter, so it weighs more. For example, honey is much denser than vegetable oil, so one liter of honey weighs more than one liter of vegetable oil. This is why liters cannot be converted to weight ounces using one universal number.
Can I convert liters to ounces without knowing density?
You can convert liters directly to US or UK fluid ounces without knowing density because both are volume units. You cannot accurately convert liters to ounces by weight without a density value or an assumed liquid density. If you know the liquid, select it in the calculator. If it is not listed, use the custom density option to calculate the weight in ounces.
Related Conversions
- Bottles and cans are usually labeled in mL: milliliters to ounces
- European spirits and wine come in cL: centiliters to ounces
- Sixteen weight ounces make a pound, so see also liters to pounds