Worked example · simulated scenario

Comparing US and Metric Cups

A handwritten “cup” can hide a difference that grows when the recipe calls for more than one. Comparing the supported definitions before measuring is more useful than assuming every cup-sized container holds the same volume.

A handwritten recipe calls for 2 cups and the cook wants to see both supported definitions.

The two volumes are different

Two US cups display approximately 473.176 mL. Two metric cups display 500 mL.

Convert each cup definition separately

1. In Convert a quantity, enter 2 and choose US cup to mL.
2. Record the result, then change From to metric cup.
3. Compare the two displayed volumes.

A metric cup here is two hundred fifty milliliters, while a US cup is about two hundred thirty-six point five eight eight. Use the definition intended by the recipe rather than switching midway through it.

Choose the cup convention used by the recipe author before measuring.