Percentage Calculator
Enter any two values to calculate the third automatically.
The total amount (100%)
The portion of the whole
%
The percentage valueQuick Examples
Common Formulas
Find Percentage
Percentage = (Part ÷ Whole) × 100"What % is 25 of 100?" → 25%
Find Part
Part = (Percentage ÷ 100) × Whole"What is 25% of 100?" → 25
Find Whole
Whole = Part ÷ (Percentage ÷ 100)"25 is 25% of what?" → 100
Common Use Cases
Discounts & Sales
Calculate sale prices: "20% off $80" = $16 discount
Grades & Scores
Find your score: "42 out of 50" = 84%
Tax Calculations
Add tax: "8.5% of $120" = $10.20 tax
Growth & Change
Track changes: "From 80 to 100" = 25% increase