About this tool
Five of the percentage questions that come up most often - tips, discounts, tax, grades, change over time - solved in one place. Each mode has its own inputs and gives you the answer plus a short plain-language explanation so you can check it makes sense. The discount mode shows the final price and how much you save; the tip mode splits the total between any number of people.
How to use it
- 1 Pick the mode that matches your question - including Discount price or Tip & split a bill.
- 2 Fill in the values shown for that mode.
- 3 Read the answer and the one-line explanation below it.
Frequently asked questions
What is the difference between percentage change and percentage points?
Percentage change is relative to the starting value (going from 20 to 25 is a 25% increase). Percentage points are the raw difference (20% to 25% is 5 percentage points). This tool reports percentage change.
Can I use negative numbers?
Yes - useful for percentage decrease and change calculations.
How does the tip splitter work?
It adds the tip percentage to the bill, then divides the total evenly across the number of people you set.
Guide
How to Calculate Percentages: Formulas, Examples and the Most Common Mistakes
The four everyday percentage questions – X% of a number, what percentage one number is of another, increases and discounts, percentage change – with examples and shortcuts.
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