The practical difference between cups, fluid ounces, milliliters, liters, and imperial measurements.
A US cup is about 237 ml
Most US recipes treat one cup as 8 fluid ounces, or about 236.6 milliliters.
Imperial pints are larger
Older UK or Commonwealth recipes may use imperial fluid ounces and pints, which are not the same as US fluid units.
Round based on the task
Recipe scaling can tolerate small rounding. Baby formula, lab work, and medicine contexts need exact instructions from the source.
The fastest way to make a calculator page useful is to show when the number is reliable, when it is only a rough estimate, and what to do next.
Next stepOpen the Liquid Conversion CalculatorRun the numbers with your own inputs.