Math calculators without the filler.
Use the math hub to choose the right small calculator instead of guessing between percentage, percent change, and average.
Math calculator directory
Use percentage for common percentage questions, percent change for before-versus-after comparisons, and average when you just need the mean of a list without spreadsheet cleanup.
Percentage calculator
Handle percent-of, what-percent, and percent-remaining questions on one page.
Percent change calculator
Compare before-and-after values and get both the raw difference and the percentage change.
Average calculator
Paste a list of values and get the mean, total, minimum, and maximum quickly.
Common mix-ups
- Use percentage when you need “what is 15% of 240?” or “what percent is 18 of 60?”
- Use percent change when you have a starting value and an ending value.
- Use average when you need the mean of a list and want the total, minimum, or maximum beside it.
Zero and negative values matter
Percent change is not defined when the starting value is zero, and negative values need careful interpretation. That is why the percent-change page now explains its formula and edge cases instead of silently flattening them.