Percentage Calculator 📊

Calculate percentages instantly — just tap any button below

What is X% of Y?

Result: 10
10% of 100 = 10

What is the % Increase from X to Y?

Percentage Increase: 50%
150 - 100 = 50, (50 ÷ 100) × 100 = 50% increase

What is the % Decrease from X to Y?

Percentage Decrease: 33.33%
150 - 100 = 50, (50 ÷ 150) × 100 = 33.33% decrease

X is what % of Y?

Percentage: 25%
25 ÷ 100 = 0.25, 0.25 × 100 = 25%

What is the % Change from X to Y?

Percentage Change: 20%
120 - 100 = 20, (20 ÷ 100) × 100 = 20% increase

% Difference between X and Y

Percentage Difference: 40%
|150 - 100| = 50, (50 ÷ ((100 + 150) ÷ 2)) × 100 = 40% difference

📱 Quick Calculate

⚡ Click any preset button above for instant calculations!

📋 Common Percentage Calculations

Calculation Formula Example
X% of Y (X ÷ 100) × Y 10% of 100 = 10
% Increase ((Y - X) ÷ X) × 100 100 to 150 = 50% increase
% Decrease ((X - Y) ÷ X) × 100 150 to 100 = 33.33% decrease
X is what % of Y (X ÷ Y) × 100 25 is 25% of 100
% Difference (|X - Y| ÷ ((X + Y) ÷ 2)) × 100 100 & 150 = 40% difference

Free Online Percentage Calculator – Calculate Percentages Instantly

Professional percentage calculator for all your needs. Whether you need to calculate percentage of a number, percentage increase/decrease, percentage change, or percentage difference between two values, this tool has you covered. Perfect for students, business professionals, shoppers calculating discounts, and anyone working with percentages. 100% private, no signup, no data upload — all calculations happen in your browser.

How to Use Our Percentage Calculator

  1. Select the type of percentage calculation you need from the tabs above
  2. Enter your numbers in the input fields or click any preset button
  3. View the result instantly with step-by-step explanation
  4. Use action buttons to clear, swap values, or copy results

Common Use Cases

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