Converters

Volume & Capacity Converter

Convert volume and capacity between liters, milliliters, cubic units and common US units accurately. Example: how many liters are in 5 US gallons?

Example: you have 5 US gallons. How many liters is that?

Volume or capacity

From To

Result 18.927059 لتر 5 US gal = 18.927059 L

One-unit equivalent 1 غالون أمريكي = 3.785412 لتر A quick way to understand the relationship between the two units.

✓ Conversion factors match data and definitions from the National Institute of Standards and Technology (NIST)

How is the conversion calculated?

The value is converted to liters first, then to the requested unit using fixed, precise conversion factors.

This calculation runs in your browser. Your values are not sent to our server.

How it works

Enter the volume or capacity, then choose the current unit and the unit you want to convert to.
Example: 5 US gallons is approximately 18.927059 liters.
Use the swap button to reverse the units without typing the value again.
The calculator uses the liter as its internal reference unit and applies fixed, precise conversion factors.
US customary units are labeled explicitly, such as US gallon and US fluid ounce, to avoid confusion with different Imperial units.

How many liters are in one US gallon?

1 US gallon equals exactly 3.785411784 liters.

How many milliliters are in one US fluid ounce?

1 US fluid ounce equals exactly 29.5735295625 milliliters.

Is one milliliter equal to one cubic centimeter?

Yes. 1 milliliter equals exactly 1 cubic centimeter.

How many liters are in one cubic meter?

1 cubic meter equals exactly 1,000 liters.

Is a US gallon the same as an Imperial gallon?

No. This calculator uses the US gallon and labels it explicitly. The Imperial gallon is a different unit.