Calculate a tip and split the bill between any number of people.
Tipping customs vary widely by country and by service type. In the US, 15–20% is typical for sit-down restaurant service; other services (delivery, salons, bars) often follow different conventions. Check local norms if you're somewhere unfamiliar.
There's no universal rule — some people tip on the subtotal before tax, others on the total after tax. Either way, enter whichever bill amount you're basing the percentage on.
That's a personal/group decision — equal splitting is simplest, but some groups prefer splitting proportionally to what each person ordered.
No fixed standard exists, but 15–20% is common in the US for good restaurant service, with 20%+ for exceptional service.
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