Percentage Calculator
Add or subtract any percentage from an amount. Quick calculator for GST, discounts, markups and more.
Last updated: Jan 2025Up to date
How to Use This Calculator
Enter any base amount, specify the percentage, and choose whether to add or subtract. The calculator instantly shows you the result along with a breakdown of the calculation.
Common Use Cases
Adding Percentage
- • GST calculation (5%, 12%, 18%, 28%)
- • Service charges and tips
- • Markup on cost price
- • Interest calculations
Subtracting Percentage
- • Discount calculations
- • Sale price after markdown
- • Commission deductions
- • Tax deductions
Formula
Add: Result = Amount + (Amount × Percentage / 100)
Subtract: Result = Amount − (Amount × Percentage / 100)
Need to compare two values? Try our Percentage Difference Calculator. See all utility calculators.