Volume
L, gal, fl oz, cups…
About This Calculator
Volume measures the amount of three-dimensional space a liquid or substance occupies. The metric system uses liters and milliliters while the US uses gallons, quarts, pints, cups, and fluid ounces — making conversions critical for cooking, chemistry, and fuel measurement.
Formula
1 liter = 0.264172 US gal = 33.814 fl oz = 4.22675 cups = 1000 ml
1 US gallon = 3.78541 L = 128 fl oz = 16 cups
Example Calculation
Convert 2 liters to US cups.
- Cups = 2 × 4.22675 = 8.4535 cups
2 liters = approximately 8.45 cups
Common Cooking and Drink Volumes
| Measure | ml | L | fl oz |
|---|---|---|---|
| 1 cup | 236.6 | 0.2366 | 8 |
| 1 pint | 473.2 | 0.4732 | 16 |
| 1 quart | 946.4 | 0.9464 | 32 |
| 1 gallon | 3785 | 3.785 | 128 |
Frequently Asked Questions
How many ml are in a cup?
One US cup equals 236.588 ml (approximately 237 ml). Note that a metric cup (used in Australia/Canada) is 250 ml.
What is the difference between US and UK gallons?
A US gallon is 3.785 liters, while a UK (imperial) gallon is 4.546 liters — about 20% larger. Always check which gallon is being used for fuel economy calculations.
How many fluid ounces are in a liter?
There are 33.814 US fluid ounces in one liter. A standard 500 ml water bottle contains about 16.9 fl oz.