Percentage Calculator – Free Online Tool

%

Percentage Calculator

Calculate percentages instantly — 5 different calculation modes





What is

% of

?

Result


is what % of

?

Result

Increase

by

%

Result after increase

Decrease

by

%

Result after decrease

% change from

to

Percentage Change

📊 Quick Percentage Reference

Value5%10%15%20%25%50%

How to Use the Percentage Calculator

This all-in-one Percentage Calculator supports 5 different calculation modes. Simply select the mode you need, enter your numbers, and get instant results. Perfect for students, shoppers calculating discounts, and anyone dealing with percentages.

  • % of Number — Find what X% of any number is (e.g., 18% GST on ₹500)
  • X is what % of Y — Find the percentage one number is of another
  • % Increase — Calculate the new value after a percentage increase
  • % Decrease — Calculate the new value after a discount or decrease
  • % Difference — Find the percentage change between two values

Frequently Asked Questions

How do I calculate percentage of a number?

To find X% of Y, multiply Y by X and divide by 100. For example, 15% of 200 = (200 × 15) / 100 = 30.

What is the formula for percentage increase?

New Value = Original Value × (1 + Percentage/100). For example, increasing 200 by 25% = 200 × 1.25 = 250.

How to calculate percentage change?

Percentage Change = ((New – Old) / Old) × 100. A positive result means increase, negative means decrease.