Calculate a Tip Amount Online
Enter the bill total and the tip percentage to get the tip and grand total. A 20 percent tip on an 85 bill is 17, making the total 102.
Percentage Calculator
Calculate percentages, percentage change, tips, discounts, margins, and more
What is X% of Y?
Result
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Quick Reference
Percentage Formulas Reference
| Calculation | Formula |
|---|---|
| X% of Y | (X / 100) x Y |
| X is what % of Y | (X / Y) x 100 |
| X is Y% of what | X / (Y / 100) |
| % Change | ((New - Old) / |Old|) x 100 |
| % Difference | (|A - B| / ((A + B) / 2)) x 100 |
| Increase by % | Value + (Value x %/100) |
| Decrease by % | Value - (Value x %/100) |
| Profit Margin | (Profit / Selling Price) x 100 |
| Markup | (Profit / Cost Price) x 100 |
Quick Start
- 1Choose the percentage of a number calculation
- 2Enter the bill total as the number
- 3Enter the tip rate as the percentage
- 4Read the tip and add it to the bill for the total
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Looking for FAQs and advanced options? Visit the full Percentage Calculator page →