Percentage Calculator
Percentage Calculator: Solve percent math in seconds—with audit-ready steps.
Perfect for finance teams, educators, and creators who need fast, transparent calculations. Toggle between three high-intent modes, save time with presets, and keep ad-friendly spacing above the fold.
Perfect for accounting, sales commissions, tax calculations, and financial planning. Pair with guides on budgeting, discounts, and financial analysis.
See FAQ ↓What is X% of Y?
Perfect for tips, discounts, commissions, and tax calculations.
- Convert 20% to decimal → 0.2
- 0.2 × 150 = 30
Use the rounding control for investor decks, then print the page or export to PDF—results stay legible in dark or light branded themes.
Tracking events fire once users calculate, save presets, or copy results to clipboard (wire via GA4 custom events).
How to use this calculator
Choose between finding a portion of a value, comparing two numbers, or calculating growth. Tabs update the form instantly.
Input raw amounts—decimals are fine. The rounding control polishes the final answer for slide decks or invoices.
Each calculation includes a mini proof so teammates or auditors can trace how the percentage was derived.
FAQ
You mainly need three: find a percentage of a number (X% of Y), find what percent one number is of another (X is what % of Y), and calculate percent change between two values.
All math runs client-side with double precision floats. Choose the rounding level you need for reports, then export or print the browser view for compliance records.
Yes. Percent change handles negative values for cash-flow swings. Division-based modes guard against division by zero and prompt you to adjust inputs.