Tip Calculator
Calculate the tip amount and the total per person for any restaurant bill, with an optional split between multiple people. Use it for fast tip math in the US or any country with a tipping culture, especially when splitting the check with friends.
About this calculator
The calculator returns total per person using: total per person = (bill + bill × tip% / 100) ÷ number of people. It happens in two implicit steps — first computing the tip amount (bill × tip% / 100), then adding it to the original bill to get the grand total, then dividing by the number of people splitting. The default tip percentage is 18%, which sits in the middle of the standard 15–20% range for US restaurant service; the default group size is 1, so the calculator returns the full bill-plus-tip when not splitting. Edge cases: a tip of 0% returns just the bill divided by people; a single-person bill (numberOfPeople = 1) returns the full pre-tip cost plus tip; setting numberOfPeople to a fractional value would technically work but does not represent a real situation. Tipping conventions vary enormously by country: the US expects 15–22% for restaurant service, 18–25% for delivery, and $1–2 per drink at bars. The UK and much of Western Europe expect 5–12% and often include service in the bill — check the receipt for "service charge included" before adding more. Japan, South Korea, and much of East Asia consider tipping unnecessary or even rude. In the US, etiquette varies by service: 15–20% for sit-down restaurants, 10% for buffets where service is minimal, 18–22% for delivery and rideshare, and $1–5 for hotel housekeeping per night. Whether to tip on the pre-tax or post-tax amount is a matter of personal preference — calculating on pre-tax is more mathematically generous to the server in low-tax states and less generous in high-tax ones; calculating on the post-tax total is simpler and is what most people actually do.
How to use
Example 1 — Solo dinner. Your bill comes to $42.50 and you want to leave a 20% tip. Enter 42.50 for Bill Amount, 20 for Tip Percentage, and 1 for Number of People. Result: $51.00. Verify: tip = 42.50 × 0.20 = $8.50; total = 42.50 + 8.50 = $51.00, divided by 1 person = $51.00. ✓ Round up to $51 even when leaving cash, or just authorize the calculated amount on the card. Example 2 — Group dinner split four ways. Four friends share a $187.40 bill and decide on an 18% tip, splitting evenly. Enter 187.40, 18, and 4. Result: $55.28 per person. Verify: tip = 187.40 × 0.18 = $33.73; total = 187.40 + 33.73 = $221.13; per person = 221.13 ÷ 4 ≈ $55.28. ✓ Each person owes $55.28 — round up to $56 individually for simplicity and the server still gets the full 18%.
Frequently asked questions
Should I tip on the pre-tax or post-tax bill amount?
The mathematically rigorous answer is to tip on the pre-tax subtotal, since tax goes to the government rather than to the server and tipping is meant to reward service. The practical answer is that most Americans tip on the post-tax total because it is what appears on the receipt and removes a mental-math step. In low-tax states (5–7% sales tax) the difference is trivial — a few cents on a $50 meal; in high-tax cities like Chicago or New York with combined rates near 10%, post-tax tipping adds about 2% to what the server effectively earns. Either is socially acceptable; servers will not complain about either approach. Some restaurants pre-compute "suggested" tips at the bottom of the check on the post-tax amount, which is generous to them and reduces customer effort.
How much should I tip for different services?
US conventions, all percentages of the bill before tip: sit-down restaurant 15–20% (18% is the modern default), buffet or counter service 10–15%, takeout 0–10% (debated, but trending toward 10% for substantial orders), delivery 15–20% plus any delivery fee not going to the driver, bartender $1–2 per drink or 15–20% of the tab, taxi/rideshare 15–20%, hotel housekeeping $2–5 per night left daily, hotel bellhop $1–2 per bag, hairstylist 15–20% of the service cost. Outside the US, defaults differ: UK 10–12%, France service is usually included (look for "service compris"), Germany 5–10% rounding up, Italy a few euros for service is plenty, Japan no tipping. When in doubt in any country, ask a local or look up that country's norms before traveling.
How do I split a bill when people ordered different amounts?
Strict approach: each person pays for their own order plus their proportional share of the tax and tip. For a $200 pre-tax bill with $20 tax and $40 tip, if your meal cost $50 then your share of tax-and-tip is 25% (50/200) of $60, or $15, so you owe $65 total. Simple approach: everyone divides the total bill (including tax and tip) equally regardless of what they ordered — this calculator implements that approach. Mixed approach: people who clearly ate or drank way above or way below the average bring it up and contribute a few extra dollars or skip the equal split. The strict approach is technically fair but creates math friction; the equal-split approach is socially friction-free but unfair to small eaters and drinkers. For groups that dine together often, the equal-split approach tends to average out over time.
What are the most common mistakes people make when tipping?
The biggest is calculating the tip percentage and forgetting to add it to the bill before dividing by people — leaving each person owing only their share of the food and no tip. The second is tipping a percentage of the bill including tip already added (double-counting). The third is failing to account for automatic gratuity (typically 18–20%) that many US restaurants add to groups of 6 or more — always check the receipt before adding more, or you may tip twice. The fourth is under-tipping for substandard service when the problem was clearly the kitchen rather than the server — servers do not control food quality and depend heavily on tips for income. The fifth is forgetting cash-only places where credit-card tipping is not an option and you need actual currency on hand. Finally, in international contexts, over-tipping in cultures where tipping is not expected (Japan, Korea, China) can be awkward or even insulting.
When should I not use this calculator?
Skip it when the restaurant has already added an automatic gratuity (common for large parties at US restaurants) — adding more tip on top would double-charge. It is the wrong tool for itemized splits where each person pays for what they specifically ordered — use a dedicated bill-split-by-item app for that. Do not use it in countries where service charge is automatically included in the bill (most of continental Europe) without first subtracting that service charge from the bill amount you enter. It also does not handle currency conversion — if you are traveling, convert to your home currency separately if you want to know what a meal cost in dollars. And for delivery, the calculator does not account for delivery fees that may or may not go to the driver — when in doubt, tip a separate amount on top of the delivery total.