CalcWisp

Milliliter (mL)

Also called: mL, ml, milliliters, cc

Definition: The milliliter is one thousandth of a liter, or one cubic centimeter; a US fluid ounce is 29.57 mL and a US cup is 236.59 mL by NIST factors.

Updated October 29, 2026 · How we check facts

The milliliter (mL) is the metric unit for small liquid volumes, such as medicine doses, recipe amounts and bottle sizes. The prefix milli means one thousandth, so 1 mL = 0.001 liter, and 1,000 mL make a liter. One milliliter equals one cubic centimeter.

Conversion

L = mL ÷ 1000
US fl oz = mL ÷ 29.57353
US cups = mL ÷ 236.588

Example

A 330 mL can is 330 ÷ 29.57353 = 11.16 US fluid ounces. A 500 mL bottle is 0.5 L, and 500 ÷ 236.588 = 2.11 US cups.

The converters ml to oz, ml to liters and cups to ml take any value. The prefix logic is explained in how many milligrams in a gram, and ounces in a liter lists bottle sizes.

Common mistakes

Milliliter (mL, volume) and milligram (mg, mass) are different quantities. They coincide only for water-like liquids, where 1 mL weighs about 1 g. US food labels also round household measures: 1 fl oz is 30 mL and a cup is 240 mL (21 CFR 101.9), slightly different from the 29.57 and 236.6 mL physical values.

Calculate it

Free toolVolume CalculatorVolume of any common solid, with the formula shown.

Guides that explain it

Related terms

Sources

  1. NIST Guide to the SI (SP 811), Appendix B.8 — Factors for Units Listed Alphabetically
  2. NIST — Metric (SI) Prefixes