Tip Calculator
Calculate the tip amount, total bill, and per-person split instantly. Choose 10%, 15%, 18%, 20% or a custom percentage. Runs entirely in your browser.
How to calculate a tip
Tipping is standard practice at restaurants, salons, taxis, and many service businesses. The standard formula is simple: Tip = Bill × (Tip % ÷ 100). Add the tip to the original bill to get the total, then divide by the number of people to find each person's share.
Common tip percentages and when to use them
- 10% — Minimum for adequate service, or useful as a quick mental math baseline.
- 15% — Traditional standard in the United States, still appropriate for good service.
- 18% — Often pre-calculated on restaurant receipts; a solid default for attentive service.
- 20% — The modern baseline for good service in most US cities; easy to calculate (move the decimal, double it).
- 25%+ — Exceptional service, complex orders, or a busy holiday shift.
Quick mental math tricks
To find 10% of any bill, move the decimal one place to the left — $48.00 becomes $4.80. For 20%, double that figure: $9.60. For 15%, take your 10% figure and add half of it: $4.80 + $2.40 = $7.20. This calculator handles the math instantly, but knowing the shortcuts helps you cross-check a receipt on the fly.
Splitting the bill
When dining with a group, the fairest approach is to add the tip to the total first, then divide by the number of diners. This avoids rounding errors that accumulate when each person calculates their own tip separately. Use the people field above to get an instant per-person breakdown.
Frequently Asked Questions
How is the tip amount calculated?↓
The tip is calculated as a percentage of your pre-tax bill. For example, a 20% tip on a $50 bill is $10, making the total $60. Divide that total by the number of people splitting the bill to get each person's share.
Should I tip on the pre-tax or post-tax amount?↓
Common practice in the US is to tip on the pre-tax subtotal, though some people tip on the full post-tax amount. This calculator uses the bill amount you enter, so just type your pre-tax subtotal if you want to follow the convention.
How do I split the bill unevenly between people?↓
This calculator splits the total (bill + tip) evenly across the number of people you specify. For uneven splits, use the per-person tip and total figures as a baseline, then adjust manually based on what each person ordered.