This converter turns US cups into liters instantly, using the exact factor 1 US cup = 0.2365882365 liters. Type any number and the result updates as you go — nothing is sent to a server, so the arithmetic happens entirely in your browser.
The US legal cup used in recipes: 240 mL, or 236.6 mL by the customary definition. One cubic decimetre — the everyday metric unit for drinks and fuel.
Because the relationship is a simple proportion, one multiplication does the whole job. The table further down gives pre-computed values for the amounts people look up most often, and the result panel also reports the reverse conversion so you can check the figure both ways.
The formula
US cups- The amount you are converting, measured in US cups
0.2365882365- The exact number of liters in one US cup
liters- The converted result
How it works, step by step
- Enter the number of US cups you want to convert.
- The value is multiplied by 0.2365882365, the exact conversion factor.
- The result is displayed in liters, rounded for readability.
- The unrounded value and the reverse conversion appear underneath so you can verify it.
Worked examples
Converting 5 US cups
Multiply 5 by 0.23658824. That gives 1.1829 liters. A quick sanity check: one US cup is smaller than one liter, so the number should get smaller — and it does.
Converting 72 US cups
72 × 0.23658824 = 17.0344 liters. Working backwards, 17.0344 ÷ 0.23658824 returns 72 US cups, which confirms the factor is applied the right way round.
How to read your score
Frequently asked questions
How many liters are in one US cup?
Exactly 0.2365882365. Every conversion on this page is that single number multiplied by your input, so the result carries no rounding error beyond what is shown.
What is the formula to convert US cups to liters?
Liters = US cups × 0.2365882365. To reverse it, divide instead: US cups = liters ÷ 0.2365882365, which is the same as multiplying by 4.226752838.
Is the US cup bigger than the liter?
No. One US cup is only 0.236588 of a liter, so the liter is the larger unit.
Why does my answer differ slightly from other cups to liters converters?
Most differences come from rounding the factor too early. This tool keeps full double precision through the calculation and only rounds at the final display step, and it also shows the unrounded value so you can see exactly where any difference appears.
What is a US cup?
The US legal cup used in recipes: 240 mL, or 236.6 mL by the customary definition.
What is a liter?
One cubic decimetre — the everyday metric unit for drinks and fuel.
Us Cups to liters reference table
| Us Cups | Liters |
|---|---|
| 0.5 cup | 0.118294 L |
| 1 cup | 0.236588 L |
| 2 cup | 0.473176 L |
| 3 cup | 0.709765 L |
| 5 cup | 1.1829 L |
| 10 cup | 2.3659 L |
| 15 cup | 3.5488 L |
| 20 cup | 4.7318 L |
| 25 cup | 5.9147 L |
| 50 cup | 11.8294 L |
| 75 cup | 17.7441 L |
| 100 cup | 23.6588 L |
| 250 cup | 59.1471 L |
| 500 cup | 118.2941 L |
| 1000 cup | 236.5882 L |
Exact factor: 1 US cup = 0.2365882365 liters. Values rounded for display.