There are 33.8140226 ounces in a liter.

The ounce is a unit of mass, weight, or volume used in most British derived customary systems of measurement.

Oz is an abbreviation for ounces.

One litre is the volume of one cubic decimetre, that is a cube of 10 × 10 × 10 centimetres. i.e.: a unit of measure that equals to exactly one cubic decimeter (dm³).

One litre of water at 4 degrees Celsius has the mass of exactly one kilogram.

In British English it is spelled “Litre“, in American English it is spelled “Liter“.