Tipping and splitting the bill
A short guide to the simple maths behind a tip — the formula, typical percentages, and how to split a bill fairly between a group.
Open the Tip Calculator →What this tool does
The Tip Calculator takes a bill amount, a tip percentage, and a number of people, then shows the tip, the grand total, and the amount each person owes — updating as you type. It all runs in your browser.
The formula
The tip is just bill × (percentage ÷ 100), and the total is
bill + tip. To split, divide the total by the number of people. For example, a
20% tip on a $50 bill is $10, for a $60 total; split three ways that's $20 each.
How to use it
- Open the Tip Calculator.
- Type the bill amount.
- Tap a preset percentage (10–25%) or enter a custom one.
- Use the − and + buttons to set how many people are splitting.
- Read the tip, total, and per-person amount.
How much should you tip?
In the United States, 15–20% is customary for table service, with 18–20% common for good service; counter service and other situations differ. Tipping norms vary widely by country, so treat presets as a starting point and adjust to local custom.
Splitting fairly
Dividing the total evenly is the quickest approach. Because cents don't always divide cleanly, the per-person figure is rounded — one person may end up a cent different so the parts add back to the exact total.
Your numbers stay private
All calculations happen locally in your browser — nothing you enter is uploaded.
FAQ
How do you calculate a tip?
Multiply the bill by the percentage divided by 100; add it to the bill for the total.
How much should I tip?
15–20% is typical for US restaurant service; adjust to local custom.
Is my data uploaded?
No — it all runs in your browser.
Ready to try it? Open the Tip Calculator →