What is this calculator for?
The check just landed at your table. The bill is $73.42, your phone is in your hand, and you have about thirty seconds before someone reaches for it. You want to tip fairly, you don't want to look cheap, and you definitely don't want to do mental math on a $73.42 subtotal at 18%. That's the only job of this calculator.
Tipping in the United States is more loaded than it sounds. Servers in 43 states earn a federal tipped minimum of $2.13 per hour, with tips making up the rest of a living wage. Industry guidance and the Emily Post Institute treat 18% as the modern standard for sit-down service, 20% as generous, and 15% as the floor for adequate service. This tool lets you pick a tip, see the per-person split if you're with friends, and compare 15% / 18% / 20% / 25% side by side so you know exactly what each tier costs.
Who reaches for a tip calculator? Solo diners with a single number to hit. Friends splitting an awkward bill with one big eater. Travelers used to no-tip countries trying to remember the US norm. Anyone who hates math at 9 p.m. with a glass of wine in them.
How to use this calculator
Enter your bill amount exactly as it appears on the check. Most US restaurants print the pre-tax subtotal and the post-tax total separately — etiquette experts (and most servers) recommend tipping on the pre-tax subtotal, though tipping on the total is widely accepted and only adds a few cents on most checks.
Pick a tip percentage. The default is 18% because that's what the National Restaurant Association and most modern guides treat as standard sit-down service. Bump to 20% for friendly attentive service, 25% for exceptional or for bartenders who comped a drink, and 15% only when service was visibly poor.
Set number of people if you're splitting. The calculator divides the post-tip total evenly. If one person ordered the $48 steak and another ordered a $14 salad, even-splitting is the simple play — but for big asymmetries, calculate each person's tip on their own subtotal and add it together. The comparison table below the result shows what 15%, 18%, 20%, and 25% would each cost — useful when you're on the fence.
Understanding your results
The calculator returns three numbers: the tip amount (what you write on the tip line), the total (what hits your card), and the per-person share (what each diner owes if you're splitting). The breakdown below shows what 15%, 18%, 20%, and 25% each yield — both as totals and per-person, so you can compare without re-running the math.
How to read the numbers in context: a $73.42 bill at 18% means $13.22 in tip, $86.64 total, and $43.32 per person if split two ways. If your server worked unusually hard — multiple kids at the table, a complicated dietary request, a sub-par kitchen they're covering for — the difference between 18% and 22% on a $73 check is $2.94. That's the trade you're making.
One important interpretation note: if your bill already includes an automatic gratuity (common for parties of 6+), the menu or check will state it explicitly with something like "18% gratuity included." Tipping on top of that is optional and reserved for genuinely outstanding service. Look for the word "gratuity" or "service charge" before adding more.
For takeout and counter service, tipping isn't required but 10-15% is appreciated when the staff handled a complex order, packed carefully, or made a coffee drink. For delivery, tip 15-20% with a $5 minimum — drivers are paying their own gas.
A worked example
Dave and his friend Mike just finished dinner at a steakhouse in Manhattan. The check is $142.80 before tax. They're splitting evenly. Service was attentive — the server caught a wine error before pouring and replaced it without fuss.
They settle on 20% as the right call: 18% was the floor, but the wine save earned the bump. The tip works out to $142.80 × 0.20 = $28.56. The post-tip total is $171.36. Split two ways, that's $85.68 per person. Dave puts $86 on his card; Mike Venmos him $85.68.
If they had gone with 18% instead, the tip would have been $25.70 and the per-person share $84.25 — a $1.43 difference per person. Trivial enough that "round up for good service" is almost always the right move on bills under $200.
Compare that to a Saturday brunch where Dave covers a $42 check for himself and a friend visiting from Sweden (where servers earn a salary and tipping is rare). At 18%, the tip is $7.56 and the total is $49.56. At 20%, the tip is $8.40 and the total $50.40. The Swedish friend asks why brunch costs $50 when the menu said $42. The honest answer: because in the United States, the menu price is the food, and the tip is the labor — and the labor isn't optional.
Related resources
For sale shopping math, see the Discount Calculator. To work out percentages outside of tipping contexts, the Percentage Calculator handles "what is X% of Y" and percent change. For travelers comparing US tipping to other countries' costs, Cost of Living Comparison helps frame how much the post-tip US dinner actually costs in your home currency. The Emily Post Institute tipping guide remains the most widely cited US etiquette reference for tipping in restaurants, hotels, salons, and rideshare.