Cups to Liters Converter
Convert US cups to liters (L)
Cup (US)
Definition: The US cup is a unit of volume used primarily in cooking and baking. One US cup is defined as exactly 8 US fluid ounces, or approximately 0.236588 liters (236.588 mL). It is half a US pint and one-sixteenth of a US gallon.
History/origin: The cup as a standardized cooking measurement was popularized in the United States in the late 19th century, largely through Fannie Farmer's 1896 cookbook which promoted level measurements for consistency. The US cup is defined as 8 fluid ounces. Other countries use different cup sizes — the metric cup (Australia, Canada, South Africa) is exactly 250 mL (0.25 L), while the Japanese cup is 200 mL (0.2 L).
Current use: The US cup is one of the most common volume measurements in American cooking and baking. Converting cups to liters is frequently needed when scaling up recipes for large batches, working with international recipes, or using metric measuring equipment. Knowing that 4 cups is just under 1 liter is a handy kitchen reference point.
Liter (L)
Definition: The liter is a metric unit of volume equal to one cubic decimeter (1 dm³), or 1,000 milliliters. It is not an SI base unit but is accepted for use with the SI system. One liter of water at 4°C has a mass of approximately one kilogram, making it a practical and intuitive unit.
History/origin: The liter was originally defined in 1795 as the volume of one kilogram of water at maximum density (approximately 4°C). The spelling "litre" is used in most English-speaking countries outside the US. In 1964, the liter was redefined as exactly 1 cubic decimeter (dm³). It is the most commonly used metric volume unit for everyday liquid measurement worldwide.
Current use: The liter is used globally for measuring beverages (water bottles, soda, milk), cooking ingredients, fuel, and chemical volumes. It is the standard unit for liquid volumes on food packaging and recipes in most countries. Common reference points: a standard water bottle is 0.5 L, a large soda bottle is 2 L, and approximately 4.227 US cups equal 1 liter.
Cups to Liters Conversion Table
| Cups | Liters [L] |
|---|---|
| ¼ cup | 0.059147 L |
| ½ cup | 0.118294 L |
| ¾ cup | 0.177441 L |
| 1 cup | 0.236588 L |
| 2 cups | 0.473176 L |
| 3 cups | 0.709765 L |
| 4 cups | 0.946353 L |
| 5 cups | 1.182941 L |
| 8 cups | 1.892706 L |
| 10 cups | 2.365882 L |
| 16 cups | 3.785412 L |
How to Convert Cups to Liters
Formula:
1 cup = 0.2365882365 L
1 L = 4.22675284 cups
Quick Mental Math:
Multiply cups by 0.2366 for a precise result
Or remember: 4 cups ≈ 1 liter (actually 0.946 L — about 5% less)
Useful Relationships:
1 cup = 0.236588 L = 236.588 mL = 8 fl oz
4 cups = 0.946353 L ≈ 1 liter (close but not exact)
4.227 cups = exactly 1 liter
16 cups = 1 gallon = 3.785412 L
Examples:
Convert 1 cup to liters:
1 cup × 0.236588 = 0.236588 L
This is 0.2366 liters (one standard US cup)
Convert 4 cups to liters:
4 cups × 0.236588 = 0.946353 L
This is 0.946 liters — just under 1 full liter
Convert 8 cups to liters:
8 cups × 0.236588 = 1.892706 L
This is 1.893 liters (half a gallon, useful for large batch cooking)