Toothpaste Calculator

Created by Piotr Małek
Reviewed by Steven Wooding
Last updated: Dec 20, 2022
With our toothpaste calculator you can check a durability and cost of your toothpaste.

If you brush your teeth twice a day, every single day (and we hope you do), you'll definitely run out of toothpaste every couple of months tops. No one likes it when it's over, especially when you have no backup option in place. That's why we built this simple calculator to help you estimate the durability of your toothpaste. To get your result, you'll need to insert the following values:

  • Toothpaste capacity - The volume of the container, so how many milliliters/fluid ounces fit in a tube.
  • Wastage - The amount of toothpaste that stays inside the tube even though you're trying to squeeze it out so hard (sometimes it just won't work without cutting the thing open).
  • Pea sizes of toothpaste - 1 pea size is the recommended amount of toothpaste you should use with every wash. Don't trust those commercials that suggest at least triple this - most stomatologists agree one pea size is perfectly enough.
  • Daily brushes - How many times you brush your teeth every day (please say it's at least two).
  • People in the household - How many people do you share your toothpaste with?
  • Toothpaste price - How much does a single tube of toothpaste cost you?

That's it. The tool will instantly tell you how long the toothpaste will last, given the values you entered. Treat it as an approximate value, of course, but it should give you some general idea about the durability or the toothpaste and its cost.

And if you want to estimate the longevity and/or total costs of other aspects of your life, feel free to check out our other tools:

Piotr Małek
Toothpaste capacity
US fl oz
Pea-sizes of toothpaste
Daily brushes
People in household
Toothpaste price
Total cost
per year
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