15 Percent Tip Calculator
Figuring out a 15% tip in your head is easy on a round number and surprisingly annoying on a real restaurant bill. A $84.50 check with tax, a split table, and everyone reaching for their phones is exactly when mental math fails.
The 15 Percent Tip Calculator below does the exact math instantly. It defaults to 15%, the classic standard restaurant tip, and it also lets you adjust the percentage, split the bill between people, and round the total up to a clean dollar amount for cash payers.
Defaults to the classic 15%. Adjust the percent, split the bill, or round up as needed.
How to use the 15 Percent Tip Calculator
Enter the bill amount, keep the tip at the default 15% (or tap another percent or type a custom one), set how many people are splitting, and calculate. If you are paying cash, tick the round-up box to get a clean dollar total.
Formula
The math behind every tip is the same:
Tip = Bill x (Tip Percent / 100)
Total = Bill + Tip
Per Person = Total / Number of People
Worked example
Dinner comes to $84.50 and three friends are splitting it evenly with a 15% tip. The tip is 84.50 x 0.15 = $12.68 (rounded to the cent). The total is 84.50 + 12.68 = $97.18. Split three ways, each person pays 97.18 / 3 = $32.39. Run the same inputs in the calculator above and you will get exactly these numbers.
What competitors miss
Most fixed-percent tip widgets do one thing: multiply by 0.15 and stop. They cannot split the check, they cannot adjust the percent when the service deserves more or less, and they give you no way to send the result to the group chat. This calculator keeps 15% as the honest default for this page, then adds the three things people actually need at the table: quick percent buttons, per-person splitting, and one-tap copy and share so everyone sees the same numbers.
Frequently asked questions
Is 15% still a standard tip?
Yes. 15% remains the classic standard for good restaurant service in the US. Many diners now tip 18% to 20% for great service, which is why the calculator includes those as one-tap options.
Do I tip on the pre-tax or post-tax total?
Tradition says the pre-tax subtotal, since tax is not service. In practice the difference is small: on a $100 bill with 8% tax, 15% pre-tax is $15.00 and 15% post-tax is $16.20. Enter whichever figure is on the check as your bill amount.
How do I split a bill evenly?
Enter the number of people in the split field. The calculator divides the full total, tip included, so everyone pays the same share.
Should I round up when paying cash?
Rounding to the nearest dollar is common with cash and keeps the math clean. Tick the round-up box and the calculator does it for you, noting that the total was rounded.
What is a good tip for bad service?
Etiquette guides suggest 10% as the floor for poor service rather than zero, unless the experience was truly unacceptable, in which case speaking to a manager matters more than the tip line.
Do I tip on alcohol the same way?
Yes, standard practice is to tip the same percent on drinks as on food, whether the tab is all drinks or dinner plus a bar round.