Cups to Liters Converter

About the cup to l calculation

One cup is exactly 0.236588 liters, so converting between them is a single multiplication. Enter any value above and the result updates as you type. The US legal cup is 240 ml; the customary cup used in recipes is 236.6 ml. The metric volume standard — one litre is exactly 1,000 cm³.

Formula

L = cup × 0.236588

1 cup = 0.236588 L
1 L = 4.2268 cup

Worked example

To convert 1 cup, multiply by 0.236588: 1 × 0.236588 = 0.236588 L.

Frequently asked questions

How many liters are in a cup?

There are 0.236588 liters in one cup. To convert any amount, multiply the number of cups by 0.236588.

How do I convert liters back to cups?

Divide instead of multiplying, or equivalently multiply by 4.2268. One liter is 4.2268 cups.

Is this conversion exact?

Yes. Since the international agreement of 1959, the relationship between cups and liters is defined exactly rather than measured, so the only rounding here is in how many decimal places we show.

Where is each of these units used?

Cups: the US legal cup is 240 ml; the customary cup used in recipes is 236.6 ml. Liters: the metric volume standard — one litre is exactly 1,000 cm³.

Sources

• NIST Special Publication 811 — Guide for the Use of the International System of Units