Support Center
Find answers to common questions and get help with using our percentage calculator.
Getting Started
Learn how to use our percentage calculator effectively:
- Enter numbers in the input fields
- Results appear automatically as you type
- Use different calculators for different needs
- All calculations are performed locally
Calculator Types
We offer several types of percentage calculations:
- Basic percentage (X% of Y)
- Percentage of number (X is what % of Y)
- Percentage change (increase/decrease)
- Percentage difference between values
- Average percentage calculator
Common Issues
Solutions to frequently encountered problems:
- Calculator not responding
- Incorrect results
- Browser compatibility issues
- Mobile display problems
Technical Requirements
System requirements for optimal performance:
- Modern web browser (Chrome, Firefox, Safari, Edge)
- JavaScript enabled
- Internet connection for initial load
- Works offline after first visit
Frequently Asked Questions
Use the "X is what % of Y?" calculator. Enter the first number in the "Number" field and the second number in the "is what % of" field. For example, to find what percentage 25 is of 100, enter 25 and 100 respectively. The result will be 25%.
Percentage Change: Measures how much a value has increased or decreased relative to its original value. Use this when you have a starting point and an ending point.
Percentage Difference: Compares two values by calculating the difference relative to their average. Use this when comparing two independent values without a clear starting point.
Use our "Average Percentage Calculator". Enter your percentages separated by commas (e.g., "10, 20, 30, 40"). The calculator will automatically compute the average. For example, the average of 10%, 20%, 30%, and 40% is 25%.
Troubleshooting Steps:
1. Ensure JavaScript is enabled in your browser
2. Try refreshing the page
3. Clear your browser cache
4. Try a different browser
5. Check that you've entered valid numbers
Yes! Our calculator is fully responsive and works perfectly on mobile devices, tablets, and desktops. You can even install it as a Progressive Web App (PWA) on your mobile device for offline access.
Absolutely! All calculations are performed locally in your browser. We do not store, transmit, or have access to any of the numbers you enter. Your data never leaves your device.
Still Need Help?
If you can't find the answer you're looking for, our support team is here to help.
Contact Support