An amount is a quantity or total of something, especially something you can measure but not necessarily count as individual items. When you ask how much of something there is, you're asking about the amount.

Think about measuring flour for cookies: you measure the amount of flour in cups, not by counting individual flour grains. The same applies to time (the amount of time you spend reading), money (the amount in your savings account), or effort (the amount of work you put into a project).

Here's an important distinction: we use amount for things we measure, but number for things we count. You'd say “the number of students in class” (because you count them one by one), but “the amount of noise they're making” (because noise is measured, not counted). You count cookies but measure the amount of sugar in them.

People sometimes use amount and number interchangeably in casual conversation, but careful writers and speakers maintain this difference. When you're writing formally or want to sound precise, remember: amounts for measuring, numbers for counting.

As a verb, amount to means to add up to a total or to be the same as. You could say “your grocery order amounts to $47,” or “all that work amounted to nothing.”