Oz to mL Converter
Convert fluid ounces to milliliters, plus cups, tablespoons, teaspoons, and liters — bidirectional, all units at once.
Liquid Volume Converter
Convert between fluid ounces, milliliters, cups, tablespoons, teaspoons, and liters — enter a value in any unit.
Fluid Ounces to Milliliters Conversion Mathematics
Oz to mL converter transforms fluid ounces into milliliters instantly, plus cups, tablespoons, teaspoons, and liters — bidirectional, all at once.
One US fluid ounce equals exactly 29.5735 milliliters. Multiplying any fluid-ounce value by this constant converts it directly to milliliters.
- 1Enter a value and choose its starting unit (fluid ounces, milliliters, cups, tablespoons, teaspoons, or liters).
- 2View the converted value across every other unit simultaneously — no need to pick a "direction" first.
A recipe calls for 8 fl oz of a liquid ingredient, but you need the metric equivalent.
Frequently Asked Questions (FAQ)
1 US fluid ounce equals 29.5735 mL, commonly rounded to 30 mL for everyday use (e.g. on nutrition labels and quick kitchen conversions).
No — a US fluid ounce is 29.5735 mL, while a UK (Imperial) fluid ounce is 28.4131 mL, about 4% smaller. This calculator uses the US fluid ounce, which is standard for US recipes, nutrition labels, and product packaging.
A US cup is 8 fluid ounces, which converts to 236.588 mL (often rounded to 240 mL in nutrition labeling).
Some metric measuring cups round to a convenient 250 mL "cup" for simplicity, which is not the same as a true US cup (236.588 mL) — check your recipe's origin to know which cup size is intended.
No — a fluid ounce measures volume, while a regular (avoirdupois) ounce measures weight. They're only interchangeable for water at room temperature, where 1 fl oz of water weighs almost exactly 1 oz; other liquids (like oil or honey) weigh a different amount per fluid ounce.
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