Math Tool

Percentage CalculatorMaster percentages with step-by-step calculations

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

Percentage (%)

Number (Y)

Fill in the numbers above to see percentage calculations instantly.

Common Percentage Applications

Discount Amount:

Item Price × (Discount % ÷ 100)

Final Price:

Original Price × (1 - Discount % ÷ 100)

Sales Tax:

Item Price × (Tax Rate ÷ 100)

Grade Percentage:

(Points Earned ÷ Total Points) × 100

Grade Improvement:

((New Grade - Old Grade) ÷ Old Grade) × 100

Class Participation:

(Days Present ÷ Total Days) × 100

Calculate a percentage of a number.

(X ÷ 100) × Y

Find what percentage one number is of another.

(X ÷ Y) × 100

Calculate the percentage change between two values.

(New - Old) ÷ Old × 100

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