Percentage Calculator
Free percentage calculator online. Find X percent of Y.
How to find a percentage of a number
Use this free percentage calculator online to find what is X percent of Y, plus the increased total after adding a percent.
Formula: (value × percent) / 100. Use it for discounts, tax, exam scores, and growth.
Results update as you type. Combine with the discount calculator or GST calculator when you are shopping or invoicing.
percentage calculator FAQ
Fill in the fields above. The result updates as you type. Empty fields stay blank until you enter a valid number or text.
Yes. Every SmartToolX calculator and converter is free. There is no paywalled result.
No. Inputs stay in your browser unless a tool needs a public API, such as live currency rates or QR image rendering.
We use the same published formulas you would expect from a standard percentage calculator. Always double-check medical, legal, or large money decisions.