How the tip calculator works
Pick a tip percentage and the calculator multiplies it by your bill to find the tip, adds the two together for the total, and divides by the number of people sharing the check. It also shows each person's share of the tip, which is handy when only some people are splitting the gratuity.
The formula
Tip = bill × tip %. Total = bill + tip. Per person = total ÷ number of people.
Example
An $85.50 dinner with an 18% tip comes to a tip of $15.39 and a total of $100.89. Split three ways, each person pays $33.63.
How much should you tip in the U.S.?
Customs vary, but common guidelines are 15%–20% for table service at restaurants, with 20% widely seen as standard for good service. Bartenders often receive $1–$2 per drink or 15%–20% of the tab. For food delivery, 15%–20% (with a few dollars minimum) is typical, and rideshare and taxi drivers commonly receive 15%–20%. Salon and spa services usually earn 15%–20% as well. Counter-service tip screens are optional; tip what feels right for the service you received.
Should you tip on the pre-tax or post-tax amount? Etiquette experts generally say the pre-tax subtotal is fine, but many people simply tip on the total for convenience. If a service charge or automatic gratuity is already on the bill — common for large groups — check the receipt so you do not tip twice.
Frequently asked questions
Should I tip on the total with tax?
Either is acceptable. Tipping on the pre-tax subtotal is traditional; tipping on the total is simpler and slightly more generous.
How do I calculate a 20% tip quickly?
Move the decimal one place left to get 10%, then double it. For $45, 10% is $4.50, so 20% is $9.
Is a service charge the same as a tip?
Not always. Some restaurants keep service charges, so ask if you are unsure whether it goes to staff.
How do I split a bill unevenly?
Calculate each person's subtotal separately, then apply the same tip percentage to each.
Results are estimates for educational purposes only and are not financial, tax, legal or medical advice. See our disclaimer. Last reviewed 2026-10-22.