Percentage Calculator
Calculate percentages, percentage change, discounts, and bill splits with instant formulas.
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Frequently Asked Questions
How do you calculate a basic percentage (P% of X)? ↓
Multiply the base number (X) by the percentage (P) and divide by 100: Result = (X × P) / 100.
How is percentage increase or decrease calculated? ↓
Subtract the original value from the new value, divide the difference by the original value, and multiply by 100: ((New - Old) / Old) × 100. A positive result indicates growth, while a negative result indicates a decrease.
How does the discount calculator work? ↓
The tool calculates the money saved (Original Price × Discount% / 100) and subtracts it from the original price to show your final price and total savings.
Are any numbers or financial calculations sent to a server? ↓
Never. All calculations are executed 100% locally in your browser. Your figures and data never leave your device.
Can I copy the results or formula steps? ↓
Yes. Each calculation mode includes an instant copy button that copies the result and mathematical formula directly to your clipboard.