Our Percentage Calculator handles all four types of percentage calculations you’ll ever need — in one tool. Whether you’re a student calculating exam scores, a shopkeeper figuring out discounts, or anyone working with percentages, this tool gives instant results.
Four modes: What is X% of Y (e.g., what is 18% of 5000?), X is what % of Y (e.g., 450 is what % of 600?), Percentage Change (increase/decrease between two values), and Add/Remove Percentage (add GST or remove discount).
How to Use This Calculator
- Select the calculation type using the tabs at the top.
- Enter your values in the input fields.
- Click “Calculate” to see the result instantly.
- The result shows the answer with step-by-step formula breakdown.
Calculate the value of a given percentage of any number.
Find what percentage one number is of another.
Calculate the percentage increase or decrease between two values.
Add or remove a percentage from a number to get the final values.
Frequently Asked Questions
How to calculate percentage of marks?
Use our “X is what % of Y” tab. Enter marks obtained as X and total marks as Y. For example, if you scored 425 out of 500, enter X=425, Y=500. The result is 85%.
How to calculate percentage increase?
Use the “Percentage Change” tab. Enter the old value and new value. The formula is: ((New – Old) / Old) × 100. For example, if a price went from ₹500 to ₹650, the increase is 30%.
How to add GST percentage to a price?
Use the “Add/Remove %” tab. Enter the base price and GST percentage (5%, 12%, 18%, or 28%). For example, adding 18% GST to ₹1000 gives ₹1180. For detailed GST calculation with CGST/SGST split, use our GST Calculator.