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Bill, tip percentage, number of people — and you get the tip, the total, and what each person owes, updating as you type. Preset buttons cover the common conventions from 10% to 25%, since tipping norms vary widely: 15–20% is standard for US table service, while many other countries tip modestly or not at all.
Frequently asked questions
How much should I tip in the US?
Restaurant table service: 15–20%, toward 20% for good service. Counter service and takeout are genuinely optional. Delivery: 10–15% with a sensible minimum. Bartenders: a dollar or two per drink or 15–20% of the tab.
Should the tip be calculated before or after sales tax?
Etiquette says pre-tax, and that's what's conventional — though many people tip on the total for simplicity. On a typical 8% tax the difference is small; this calculator uses whatever bill amount you enter.
How does splitting work with awkward amounts?
The per-person figure is the exact division; round up to friendly numbers and the difference becomes extra tip. Splitting evenly is almost always cheaper to your friendships than itemizing.