Formula
This calculator uses the standard tip calculator formula:
Frequently Asked Questions
Standard restaurant tip is 15–20% for satisfactory service. 18% is common, 20% for excellent service, and 10% or less for poor service.
Multiply the bill by 0.20. For example, 20% tip on $85 = $85 × 0.20 = $17. Or simply move the decimal one place and double it.
Add the bill total and tip together, then divide by the number of people. For example, $100 bill + $18 tip = $118 ÷ 4 people = $29.50 each.
Convention varies, but most etiquette guides suggest tipping on the pre-tax subtotal. Our calculator uses the total bill amount you enter.
15% is the minimum accepted standard, 18% is average, 20% is considered good, and 25%+ is excellent. For exceptional service, tip more generously.
Some restaurants automatically add a gratuity (usually 18–20%) for large parties. Always check the bill before adding an additional tip.