Tip Calculator
Standard Tip Amounts
15% = Fair service, 18% = Good service, 20% = Excellent service, 22%+ = Outstanding service
About This Calculator
This tip calculator helps you move from raw inputs to a decision-ready output in seconds.
Calculate tip amounts, total bill, and per-person split for any tip percentage and party size. Supports custom tip percentages and shows breakdowns for 15%, 18%, 20%, and 25% side by side.
If your workflow expands, pair this calculator with Time Zone Converter and Cooking Measurement Converter to cross-check assumptions and build a stronger analysis chain.
Formula
Tip amount = Bill × (Tip% / 100). Total = Bill + Tip. Per person = Total / Number of people. For example: $85 bill, 20% tip → $17 tip, $102 total, $25.50 per person for 4 people.
Example Calculation
The worked example below demonstrates how the input fields translate into the final output. Use it as a quick validation pass before entering your own numbers.
- bill amount ($): 85
- tip percentage (%): 20
- number of people: 4
Explanation of Results
Result Interpretation
Tip = $85 × 0.20 = $17. Total = $85 + $17 = $102. Split 4 ways: $102 / 4 = $25.50 per person. If the service was exceptional you might tip 25%: $85 × 0.25 = $21.25 tip, $106.25 total, $26.56 per person.
FAQ
How much should I tip at a restaurant?
Standard restaurant tipping in the US: 15–18% for adequate service, 20% for good service, 22–25% for excellent service. For takeout, 10–15% is common but optional. Buffets: $1–2 per person for staff who bring drinks. Tip on the pre-tax subtotal or on the total — either is accepted, though most people tip on the pre-tax amount.
How do I calculate a 20% tip quickly in my head?
Move the decimal one place left to get 10%, then double it. For a $47 bill: 10% = $4.70, doubled = $9.40 tip. For 15%: find 10% ($4.70) then add half of that ($2.35) = $7.05. For 25%: find 10% ($4.70), then multiply by 2.5 = $11.75. Or simply use this calculator for exact splits.
Do I tip on the pre-tax or post-tax amount?
Tipping on pre-tax is technically correct (you're tipping on the service, not the tax), but in practice most people tip on the total including tax. The difference is small — on a $100 pre-tax bill with 8% tax, tipping 20% on pre-tax = $20 vs. post-tax = $21.60. Either is acceptable; servers won't distinguish.
How do I split a bill unevenly?
This calculator splits the total evenly. For uneven splits, calculate each person's share of the food separately, then calculate the tip on each person's share. Most restaurants will split checks on request, which makes it easier. For casual groups, even splitting a few dollars is usually easier than calculating exact amounts.
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See Also
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