What is X% of Y Calculator

Divide the percentage by 100, then multiply by the number. For example, 20% of 150 = (20/100) × 150 = 30. This calculator does this instantly for any values.

20% of 100 is 20. Simply divide the percentage by 100 and multiply: (20/100) × 100 = 20.

Multiply the bill amount by 0.15 (which is 15/100). For a $50 bill: $50 × 0.15 = $7.50 tip. The total would be $57.50.