Percentage Calculator

X% of Y, percentage change, and what percent X is of Y. Free, no sign-up.

What is% of?
is what % of?
% change fromto

About Percentage Calculator

This percentage calculator solves the three most common percentage questions: what is X% of Y, X is what percent of Y, and the percentage change from one value to another.

How to use Percentage Calculator

  1. Pick the calculator row you need.
  2. Enter the two numbers.
  3. The answer updates instantly.

Frequently asked questions

How do I calculate percentage increase?

Subtract the old value from the new value, divide by the old value, then multiply by 100.

How do I find marks percentage?

Use “X is what % of Y”: enter marks obtained as X and total marks as Y.

Is a 50% rise followed by a 50% fall back to the start?

No. 100 becomes 150, and 50% of 150 is 75, so you end at 75.

More calculators

See all →

Age Calculator

Exact age in years, months and days on any date.

EMI Calculator

Monthly loan EMI, total interest and full schedule.

SIP Calculator

Estimate mutual fund SIP returns and maturity value.

GST Calculator

Add or remove GST and see CGST/SGST split.

BMI Calculator

Body Mass Index in metric or imperial units.