Percentage Calculator

All tools
Answer every percentage question — X% of Y, what percent, percentage change, increase/decrease, tips and discounts. Free, in your browser.

Live percentage math — six calculators that update as you type. Nothing leaves your browser.

What is X% of Y?
%
—
Y × X ÷ 100
X is what percent of Y?
—
X ÷ Y × 100
Percentage change
—
(Y − X) ÷ X × 100
Increase or decrease by %
%
—
X × (1 + Y ÷ 100)
Tip calculator
%
Tip amount—
Total—
Per person—
tip = bill × % ; per = (bill + tip) ÷ people
Discount calculator
%
You save—
Final price—
final = price − (price × % ÷ 100)
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