How to calculate a tip
To figure a tip, multiply the bill by the tip percentage. For an 18% tip on $85, that's $85 × 0.18 = $15.30, making the total $100.30. To split the bill, divide the total by the number of people. This calculator does all of that instantly as you type, so you can adjust the percentage or headcount at the table.
Mental math shortcuts
- 10%: move the decimal one place left ($85 → $8.50).
- 20%: double the 10% figure ($17.00).
- 15%: take 10% and add half of it ($8.50 + $4.25 = $12.75).
- 25%: divide the bill by four.
How much should you tip?
Tipping customs vary by country and service. In the United States, common guidelines are:
- Sit-down restaurants: 15–20% for standard service, more for excellent service or large parties.
- Bars: $1–2 per drink or 15–20% of the tab.
- Food delivery: 15–20%, with a few dollars minimum, more in bad weather.
- Hair salons and barbers: 15–20%.
- Taxis and rideshare: 10–20%.
- Hotel housekeeping: $2–5 per night.
In many European and Asian countries, service is included in the price or tipping is modest, so check local customs when traveling.
Pre-tax or post-tax?
Etiquette experts often say to tip on the pre-tax amount, but many people tip on the total for simplicity. To tip on the pre-tax amount, enter the subtotal before tax and then add the tax separately. Some restaurants automatically add a gratuity for large groups. Check the receipt so you don't tip twice.
Frequently asked questions
What is a standard tip in the US?
15–20% of the pre-tax bill is standard at sit-down restaurants; 20% is common for good service.
Should I tip on tax?
Traditionally tips are calculated on the pre-tax subtotal, but tipping on the total is common and appreciated.
How do I split a bill unevenly?
Calculate each person’s share of the subtotal separately, then apply the same tip percentage to each.