Percentage Calculator Online
Three percentage calculators: find X% of Y, what percent X is of Y, and percentage change between two values.
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Disclaimer: Results are estimates for informational purposes only. Market conditions and interest rates vary. Consult a SEBI-registered financial advisor before making investment decisions.
About Percentage Calculator
Three modes: (1) Find X% of Y, (2) X is what % of Y, (3) % change from old to new value. Used for exam marks, salary hike, discounts, GST calculations.
Percentage Calculator is a free, browser-based utility that requires no login, no signup, and no installation. All processing happens entirely within your web browser using JavaScript — your data never leaves your device. The tool works on all screen sizes including mobile phones, tablets, and desktop computers.
How to use
- Enter your values in the input fields — results update instantly as you type.
- No submit button needed. The tool calculates in real time.
- Copy your result or share it via WhatsApp or Twitter using the buttons above.
- Use the workflow links below to chain into related tools for a complete task.
- All processing is browser-only. Nothing you enter is sent to any server.
Tool details
⚡ Next step — complete your workflow
Frequently asked questions
How to calculate percentage marks?
Percentage = (Marks Obtained / Maximum Marks) × 100. Example: 450/500 = 90%.
How to calculate salary hike percentage?
Hike % = ((New Salary - Old Salary) / Old Salary) × 100.
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