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Percentage Calculator

Three common percentage problems, solved instantly.

What is X% of Y?

% of = —

X is what percent of Y?

is what % of = —

Percentage change from X to Y

→ = —

Percentage math comes up constantly — figuring out a discount, a tip, a grade, or how much something changed — this handles the three most common percentage questions instantly as you type.

শতাংশ হিসাব করতে চান? ছাড়, টিপ, বা যেকোনো শতাংশ সমস্যা সহজেই সমাধান করুন — সম্পূর্ণ বিনামূল্যে, সরাসরি আপনার ব্রাউজারে।

How it works

  1. Pick the calculation you needFinding a percentage, working out what percent one number is of another, or measuring a change.
  2. Type in your numbersAll three calculators update live as you type — no button to click.
  3. Read the resultShown instantly next to the fields you filled in.

FAQ

How do I calculate a percentage increase or decrease?

Use the "Percentage change" calculator — enter the starting and ending values to see the exact percent change.

Do I have to switch between the three calculators?

No — all three are live on the page at once. Fill in whichever one matches what you're calculating; the others stay ready if you need them next.

Can I use this for discounts and tips?

Yes — the "What is X% of Y" calculator works for discounts, tips, tax, and any percentage-of-a-number problem.

Does this work on Mac, Windows, or my phone?

Yes — it runs in any modern browser on Mac, Windows, Chromebook, iPhone, or Android. No app or software to install.