Doing quick tip math at the table is a small but surprisingly common headache — especially when the check is split. A tip calculator removes the guesswork: it applies your chosen tip percentage to the pre-tax bill and, optionally, divides the final total by the number of diners so everyone knows exactly what to pay, down to the cent. Everything runs privately in your browser; nothing is uploaded or stored.
In the United States, the accepted norm is 15–20% of the pre-tax bill for sit-down service, with 18–20% common in cities and upscale venues. Casual spots, buffets, and takeout typically see 10–15%, while delivery drivers usually get a flat amount plus roughly 10%. Bars are simpler — a dollar or two per drink works well. When service was exceptional, a little extra is always appreciated; when it was poor, etiquette guides suggest speaking with the manager rather than stiffing the server.
The calculator tips on the pre-tax subtotal, which is what etiquette experts recommend — most restaurant POS systems quietly suggest tips calculated on the post-tax total, which inflates what you pay. The optional round-up feature bumps the tip so the grand total lands on a whole dollar, which makes splitting cash easy and leaves a slightly larger tip for the server.
How to use the Tip Calculator
- Enter the pre-tax bill — the subtotal line on your receipt, before tax.
- Pick a tip percentage with the preset buttons or the slider (0–40%).
- Set the number of people if you are splitting the check.
- Choose a round-up option if you want a whole-dollar total.
- Click Calculate Tip to see the tip amount, the grand total, and each person's share.
Tips for tipping well
- Tip on the pre-tax amount — the industry etiquette standard, not the inflated post-tax suggestion.
- For groups of 6+, many restaurants add automatic gratuity (often 18–20%) — check the bill first so you don't tip twice.
- When splitting, have one person pay the card bill and others Venmo their share — the per-person figure makes this painless.
- Cash tips go straight to the server and never touch card processing fees.
Why tip math is trickier than it looks
Splitting a bill evenly after adding tip means dividing an already-divided figure, and most people's mental math drifts — studies consistently show diners either overpay or short the tip when they estimate. A calculator also protects you from the automatic gratuity trap: party-size surcharges plus a second tip can push your effective tip past 35% without you noticing. Locking in the percentage first keeps the total honest and fair to both the server and the table.
Frequently asked questions
What is a standard tip percentage in the US?
In the United States, 15–20% of the pre-tax bill is standard for sit-down restaurant service, with 18–20% common in cities. 10–15% is typical for casual or buffet service, and 10% is customary for delivery.
Should I tip on the pre-tax or post-tax amount?
Etiquette experts recommend tipping on the pre-tax subtotal. Most POS systems calculate suggested tips on the post-tax total, which quietly inflates the tip. This calculator uses the pre-tax bill, as etiquette suggests.
How do I split a restaurant bill fairly among friends?
Enter the full pre-tax bill, choose your tip percentage, and set the number of people. The calculator divides the total — tip included — evenly, so everyone knows their exact share down to the cent.
What does the round-up option do?
Round-up adjusts the tip so the final total lands on a whole dollar amount. It makes splitting cash easier and slightly increases the tip in the server's favor.
All calculations are estimates for personal use. Tips are discretionary; this tool is not financial advice.