Tip Calculator
Quickly calculate tips for any bill amount, choose from preset or custom tip percentages, and split the total evenly among your group.
About This Calculator
The Tip Calculator makes it easy to figure out how much to leave as a gratuity. Choose from common preset percentages (10%, 15%, 18%, 20%, 25%) or enter a custom amount. If you are dining with friends, enter the number of people to see the per-person breakdown including each person's share of the tip and bill.
How to Use
- Enter your values in the input fields above
- Click the calculate button to see results
- Review your results displayed below the inputs
- Use the reset button to clear all fields and start over
The Formula
How the calculation works under the hood
Tip amount
Standard percentage-of-a-value calculation.
Per-person cost
Divides the total evenly — useful when splitting a bill among friends.
Worked Example
Step-by-step walkthrough with real numbers
“A $78.50 dinner bill with an 18% tip split among 4 people.”
- 1Tip = 78.50 x 0.18 = $14.13.
- 2Total = 78.50 + 14.13 = $92.63.
- 3Per person = 92.63 / 4 = $23.16.
Each person pays $23.16.
⚠️Common Mistakes
- ✕Tipping on the post-tax total instead of the pre-tax subtotal — both are common, but pre-tax is conventional in most states.
- ✕Forgetting to split the tip along with the bill when multiple people are paying.
- ✕Entering tip as a decimal (18 instead of 0.18 when required by the formula).
💡Pro Tips
- ✓Double the tax for a rough 15-18% tip in most US states.
- ✓Round up when the per-person number is close to a round dollar amount — servers appreciate consistency.
- ✓Use a custom tip percentage when service is exceptional (or poor) — preset buttons are just shortcuts.
Related Guides
Go deeper with these in-depth articles
Percentage Calculations Made Simple
Every percentage problem solved by one of three formulas. Learn them once, add a couple of mental-math shortcuts, and you will never be stumped by a discount tag again.
Read guide →How to Calculate a Restaurant Tip (and When to Tip More)
The simple formulas for calculating tips at restaurants, bars, and takeout. Learn when 15% is enough and when you should tip 20% or more.
Read guide →How to Split a Bill and Tip Fairly
Three methods for splitting a restaurant bill — equal, proportional, and item-by-item — with tip formulas, worked examples, and fairness tips for groups.
Read guide →Mental Math Tricks for Everyday Calculations
Ten mental math techniques for tips, discounts, multiplication, division, and quick estimation — with worked examples and practice tips.
Read guide →Frequently Asked Questions
How do I split a bill with friends?
Enter the total bill, select or type a tip percentage, then set the number of people. The calculator shows each person's share of both the bill and the tip.
What tip percentage is standard?
In the United States, 15–20% is considered standard for sit-down restaurant service. The calculator offers presets of 10%, 15%, 18%, 20%, and 25%.
Can I enter a custom tip percentage?
Yes. Type any percentage into the custom tip field — the preset buttons are just shortcuts for common amounts.
Is this calculator free to use?
Yes! All calculators on Get Precision Calculator are completely free with no limitations or sign-up required.
Is my data saved or tracked?
No. All calculations are performed locally in your web browser. Get Precision Calculator does not store, collect, or track your calculation data.
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