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🔢 Percentage Calculator
Calculate percentages, discounts, tips, and percent change instantly.
📊 What is X% of Y?
What is
% of
?
Enter values above
📈 X is what percent of Y?
is what % of
?
Enter values above
📉 Percent Change (Increase/Decrease)
From
to
Enter values above
💵 Tip Calculator
Bill Amount: $
Tip: $0.00 | Total: $0.00
🏷️ Discount Calculator
Original Price: $
Discount:
%
You Save: $0.00 | Final Price: $0.00
Common Percentage Calculations
| Calculation | Formula | Example |
|---|---|---|
| X% of Y | (X ÷ 100) × Y | 25% of 80 = 20 |
| X is what % of Y | (X ÷ Y) × 100 | 20 is 25% of 80 |
| Percent Change | ((New - Old) ÷ Old) × 100 | 80→100 = 25% increase |
| Discount Price | Price × (1 - Discount%/100) | $100 @ 20% off = $80 |
Common Uses
🛒 Shopping Discounts
Calculate sale prices and compare deals when shopping.
🍽️ Restaurant Tips
Quickly calculate gratuity at different tip percentages.
📊 Business & Finance
Profit margins, growth rates, interest calculations.
📚 School & Studies
Calculate test scores, grade percentages, and GPAs.