Percentage Calculator
Three calculators in one: find what X% of Y is, calculate what percentage X is of Y, and compute the percentage change between two numbers. Clean, instant results.
100% Secure
Runs in Browser
No Upload Needed
About Percentage Calculator
Percentages come up constantly — discounts, tax rates, grade calculations, growth metrics, tip amounts. Instead of fumbling with formulas, Davirix Percentage Calculator gives you three modes in one tool. 'What is X% of Y?' handles the most common calculation. 'X is what % of Y?' reverses it. 'Percentage change from X to Y' shows you the increase or decrease. Each mode shows the formula alongside the result, so you learn the math while getting your answer. It's the kind of tool you'll bookmark and use every week.
Key Features
- Three calculation modes in one tool
- Shows formula alongside the result
- Handles increase, decrease, and difference calculations
- Instant results — no submit button needed
- History of recent calculations
- Works offline in your browser
How to Use Percentage Calculator
- 1
Choose a calculation mode
Select from 'X% of Y', 'X is what % of Y', or 'Percentage change'.
- 2
Enter your numbers
Type the values — the result appears as you type.
- 3
Read the result
See the answer along with the formula used.
Frequently Asked Questions
- How do I calculate a percentage increase?
- Use the 'Percentage change' mode. Enter the original value and the new value — the tool calculates the increase (or decrease) as a percentage.
- Can I use decimal percentages?
- Yes. Enter 7.5 for 7.5% — the tool handles decimals accurately.
- How do I reverse a percentage?
- Use 'X is what % of Y' mode. Enter 30 and 200 to find that 30 is 15% of 200.