CalcTools

Percentage Calculator

Calculate percentages, percentage increase/decrease, and what percentage one number is of another. Perfect for finance, academics, shopping, and day-to-day calculations.

✓ Free forever•✓ Instant results•✓ Mobile friendly
What is X% of Y?
Great for tax, tips, and discount calculations.

Result

0.00

25% of 200 is 0.00

How to Use the Percentage Calculator

This calculator solves every common percentage problem:

  • Calculate X% of Y: Discounts, GST, tips, commissions, and taxes.
  • What % is X of Y: Grades, survey results, completion rates, and KPIs.
  • Percentage change: Track revenue growth, weight change, or price movements.

Frequently Asked Questions

How do I calculate a percentage?

Divide the part by the whole and multiply by 100. Our tool does this instantly.

How do I calculate percentage change?

Use ((New Value - Old Value) / Old Value) × 100. Enter values in the % change tab to automate it.

Can I use this calculator on mobile?

Yes. CalcTools is fully responsive and works on every device.

Need Help?

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Tech Stack
MERNMERN
Next.jsNext.js
App DevelopmentApp Development
🎨Web designing
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WordPressWordPress
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