Tip Calculator

How to Calculate a Tip The math is straightforward: a tip is a percentage of the bill. Three formulas cover everything our calculator does: Tip = Bill × (Percentage ÷ 100) Total = Bill + Tip Per person = Total ÷ Number of people For a $48.50 bill with a 20% tip, split between 3 people: Tip = $48.50 × 0.20 = $9.70 Total = $48.50 + $9.70 = $58.20 Per person = $58.20 ÷ 3 = $19.40 Three terms often used interchangeably are not always the same thing. A tip (or gratuity) is a voluntary payment added by the customer for service received. A service charge is a mandatory amount added by the establishment to your bill - common for parties of 6 or more (often called "automatic gratuity") and standard practice in many European restaurants. When a service charge is already included, an additional tip is not required, though customers sometimes leave extra for exceptional service. Above the calculator, the Tip comparison table shows side-by-side results for the same bill at percentages from 0% to 40%, so you can quickly see what different tip levels would cost without re-entering the bill amount. Tipping Norms in the US In 2025, the average tip at full-service restaurants in the United States is 19.4%, based on Toast's analysis of card and digital payments across more than 140,000 locations (Q1 2025 Restaurant Trends Report). Quick-service tips average 15.8%. Cash tips are not included in these figures. The standard has shifted over time. According to Cornell University researcher Michael Lynn's 2025 longitudinal analysis, the typical restaurant tip rose from 15% in the 1970s to 19-20% today. Many Americans now consider 18-20% the baseline for adequate to good service, rather than the older 15% norm. Tipping norms in the United States are shaped by a unique wage structure: the federal tipped minimum wage has been $2.13 per hour since 1991. In states without higher tipped wages, service workers depend on tips for most of their income - which is why leaving no tip at a sit-down restaurant is widely seen as offensive, not just impolite. According to Bankrate's 2025 Consumer Tipping Survey (sample of 2,445 U.S. adults, surveyed April-May 2025), only 35% typically tip at least 20% at sit-down restaurants, down from 37% the previous year. The share who "always tip" sit-down restaurant servers stands at 70%. Mental Math Tricks When a calculator isn't handy, you can estimate a tip in seconds using the 10% rule. Start by finding 10% of the bill, then build other percentages from there. Take a bill of $87.50 as an example: 10% - move the decimal point one place to the left: $8.75 20% - double the 10%: $8.75 × 2 = $17.50 15% - 10% plus half of 10%: $8.75 + $4.38 ≈ $13.13 25% - quarter of the bill: $87.50 ÷ 4 = $21.88 For odd percentages like 18%, the easiest path is to round to the nearest familiar value (20% in this case) - the difference is small enough that the answer will still be close. In practice, mental math is most useful for a quick sanity check or when splitting a bill between friends. For exact amounts, the calculator above handles rounding to cents and per-person totals automatically.