Tip Calculator

How it is calculated

The tool works out a tip on the bill and splits the total between diners. tip = bill × rate / 100, total = bill + tip and per person = total / people. The bill is the amount before the tip, the rate is the tip percentage (18 means 18%), and people is the number of people sharing, with a minimum of 1 if the field is empty or invalid. The split is equal and includes the tip. The bill cannot be negative, and a tip rate must be entered. Results are rounded to two decimals, so the per-person shares can differ from the total by a cent or so. Tipping customs vary by country, and in some places service is already included in the bill.

Common mistakes

• Typing the rate as 0.18 instead of 18; it is read as a percentage, so the tip would be almost nothing.
• Adding a tip on a bill that already contains a service charge, and tipping twice.
• Entering the bill after tax when local custom is to tip on the pre-tax amount, which raises the tip.
• Leaving the number of people blank for a shared bill, so the whole amount is shown for one person.
• Expecting an uneven split by order; the result divides the total equally, so people who ordered less pay the same.