Percentage Calculator 2025 – Discount, Marks & Increase/Decrease (Free Online Tool)

Percentage Calculator 2025 – Discount, Marks & Increase/Decrease (Free Tool)

Updated today • Easy step-by-step guide + instant calculator link

Need to find discounts, exam marks in % or increase/decrease? Use our free online Percentage Calculator. It’s fast, accurate and works on any phone.

➜ Open Percentage Calculator

What you can calculate

• 🎯 Discount % and final price (shopping/sales)
• 📚 Marks to % (exam/result calculation)
• 📈 % Increase/Decrease (price change, growth, loss)
• 🔁 Find number from % (e.g., 18% of 250)

Quick formulas (with examples)

1) Percentage of a number = (Part ÷ Whole) × 100
Example: 45 out of 80 → (45÷80)×100 = 56.25%

2) Discount price = Price − (Price × Discount% ÷ 100)
Example: ₹1200 @ 25% off → 1200 − (1200×25/100) = ₹900

3) % Increase/Decrease = ((New − Old) ÷ Old) × 100
Example: 500 → 575 → ((575−500)/500)×100 = 15% increase

How to use the calculator

1. Select the mode: Discount / Marks / Increase-Decrease / Find % of number
2. Enter your values
3. Tap Calculate to get instant results

Use Percentage Calculator Now

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FAQ

How do I convert marks to percentage?

Use (Scored ÷ Total) × 100. Example: 432/500 = 86.4%.

What is the fastest way to get discount price?

Price − (Price × Discount% ÷ 100). Example: ₹2499 @ 30% off → ₹1749.3.

Is the tool free and mobile friendly?

Yes. 100% free, no login, optimized for phones.

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Tip: Bookmark this page for quick daily calculations.