Math Tool

Percentage CalculatorMaster percentages with step-by-step calculations

Calculate percentages, grade conversions, discounts, and more with instant results and explanations.

X% of Y

Enter values to calculate

Fill in the numbers above to see percentage calculations instantly.

Common Percentage Applications

Shopping Calculations

Discount Amount:
Item Price × (Discount % ÷ 100)
Final Price:
Original Price × (1 - Discount % ÷ 100)
Sales Tax:
Item Price × (Tax Rate ÷ 100)

Academic Calculations

Grade Percentage:
(Points Earned ÷ Total Points) × 100
Grade Improvement:
((New Grade - Old Grade) ÷ Old Grade) × 100
Class Participation:
(Days Present ÷ Total Days) × 100

Percentage Formula Guide

Find X% of Y

Calculate a percentage of a number.

(X ÷ 100) × Y

What % is X of Y?

Find what percentage one number is of another.

(X ÷ Y) × 100

% Change

Calculate the percentage change between two values.

(New - Old) ÷ Old × 100

Frequently Asked Questions

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