Calculator
Percentage Calculator
Calculate percentages: what is X% of Y, X is what % of Y, percentage change, add/subtract percentages.
What is X% of Y?
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About Percentage Calculator
OptiPix Percentage Calculator handles six common percentage calculations. Find what X% of Y is, determine what percentage X is of Y, calculate the percentage change between two numbers, add or subtract a percentage from a value, and compute the percentage difference between two values. Each mode shows the formula used. The calculation history tracks your last 10 results for easy reference. All math runs locally in your browser with zero server calls.
How It Works
Each calculation mode uses straightforward arithmetic formulas. The tool validates inputs to handle edge cases like division by zero and displays the formula alongside the result for transparency.
Use Cases
- •Calculate discounts and sale prices while shopping
- •Determine tip amounts at restaurants
- •Calculate grade percentages for assignments
- •Compute profit margins for business analysis
- •Track percentage changes in financial data
Frequently Asked Questions
What types of percentage calculations are supported?
How is percentage change calculated?
What is percentage difference?
Is there a calculation history?
Is any data sent to a server?
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