💵 Tip Calculator: Work Out Gratuity and Split the Bill

What is the Tip Calculator?

A tip (or gratuity) is an extra amount you add on top of a bill to reward service. It is almost always worked out as a percentage of the bill: an 18% tip on a $50 bill is $9, and the total you pay becomes $59. The percentage is the only real variable, so once you decide what rate feels right for the service, the rest is simple arithmetic. A quick way to check the tool in your head is the 10% trick: shift the decimal one place to get 10% of the bill, then double it for 20% or halve it and add it on for 15%.

Tipping norms vary a lot by country. In the United States, tipping is effectively expected because many service workers are paid a low base wage and rely on tips, with 15% to 20% being the usual range in a sit-down restaurant and 20% now widely treated as the baseline for good service. In much of Europe a service charge is often already included, so people round up or leave a small extra amount rather than a full 15% to 20%. In countries such as Japan tipping can even be seen as rude. When you travel, it is worth checking the local custom rather than assuming the US norm.

Splitting works by adding the tip to the bill and then dividing the total by the number of people, so each person covers an equal share of both the bill and the gratuity. One point that quietly changes the number is whether you tip on the pre-tax or post-tax total. Tipping on the pre-tax amount is the traditional approach, since the tax is not part of the service. Many people simply tip on the post-tax total shown at the bottom of the receipt for convenience, which is fine, just know it nudges the tip slightly higher.

Tipping is not just a restaurant thing. Hotel housekeeping, bellhops, valets, hairdressers, food-delivery drivers and movers all have their own customary amounts, some as a percentage and some as a flat dollar figure. For housekeeping, a few dollars left daily reaches the person who actually cleaned your room, since staff often rotate. For a valet you tip when the car comes back, not when it is parked. The reference table below covers the most common situations so you are not guessing.

You may also have noticed tipping prompts appearing in places they never used to, such as counter pickup, self-checkout and cafes, often pre-set at 18% to 25%. This shift, sometimes called tipflation, is driven by digital payment screens and rising costs. There is no obligation to tip on a transaction with no table service, so it is fine to choose the no-tip option or a smaller amount where you would not traditionally tip. The calculator lets you type any custom percentage, so you stay in control rather than accepting whatever the screen suggests.

When to use it

• Splitting a restaurant bill evenly between friends without arguing over the maths.
• Deciding a fair tip for a delivery driver or taxi when you are not sure of the going rate.
• Checking what a 15%, 18%, or 20% tip actually comes to before you sign the receipt.
• Working out hotel, valet, hairdresser or mover tips from the customary-rate table.
• Deciding how much (if anything) to leave when a payment screen prompts for a tip at counter service.
• Settling the per-person share quickly when a group wants to pay separately.

How to use the Tip Calculator

1. Enter the bill amount (use the pre-tax or post-tax figure, whichever you prefer to tip on).
2. Choose or type the tip percentage you want to leave.
3. Set the number of people sharing the bill.
4. Read off the tip amount, the total, and the per-person share.
5. Round the per-person figure up to the nearest dollar if you want the split to come out even.

Formula & method

Worked examples

Customary US tipping guide by service type

Quick tip chart by bill amount (US restaurant rates)

Common mistakes to avoid

• Tipping on the post-tax total by accident. If you mean to tip on the pre-tax amount, use that figure. Tipping on the larger post-tax total quietly raises the tip, which is fine only if it is what you intended.
• Forgetting an auto-gratuity on large groups. Many restaurants add an automatic service charge (often 18% to 20%) for groups of six or more. Adding your own tip on top means paying twice, so check the bill first.
• Rounding the split unfairly. Dividing a total like $59 between 2 gives $29.50 each. Rounding everyone down leaves the bill short, so round up or have one person cover the few extra cents.
• Assuming the payment-screen default is the right amount. Digital terminals often pre-select 20% to 25%, even at counter service where you would not traditionally tip. The suggested figure is a default, not an obligation, so pick the rate that fits the service.
• Applying US rates everywhere you travel. A full 15% to 20% is a US norm. In many countries a service charge is included or tipping is minimal, and in some it can cause offence, so check the local custom before you travel.

Glossary

Tip (gratuity)

A voluntary extra amount added on top of a bill to reward service, usually a percentage of the total.

Service charge

A fee the business adds to the bill itself, sometimes in place of a tip. It may or may not reach the staff.

Auto-gratuity

An automatic tip, often 18% to 20%, added by a restaurant for large groups, usually six or more people.

Pre-tax total

The bill amount before sales tax is added. Tipping on this figure is the traditional approach.

Post-tax total

The final bill including sales tax. Tipping on this figure raises the tip slightly versus the pre-tax amount.

Tipflation

The recent rise in tip prompts and suggested percentages, including in settings that did not traditionally expect a tip.

Tipped minimum wage

A lower base wage some US employers may pay tipped workers, who make up the rest through tips.

Frequently asked questions