AnyTool
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How do I calculate a tip and split the bill?

Type your bill into AnyTool Tip Calculator, pick a tip percentage (10/15/18/20/25% or any custom value on the slider), and set how many people are sharing. The tip is the chosen base × percent ÷ 100 — by default the pre-tax subtotal (the etiquette standard), or the post-tax total if you toggle it — and the grand total is bill + tax + tip. When you split, it shows the tip per person and the total per person. An optional round-up nudges the grand total or each person’s share up to a whole unit, with the tip absorbing the difference so the bill and tax stay exact. Everything is computed live in your browser.

  • Tip = base × percent ÷ 100 (base = pre-tax bill or post-tax total)
  • Grand total = bill + tax + tip
  • Per person = grand total ÷ number of people
  • US conventions: 15% floor, 18–20% standard, 25%+ for great service
  • 100% in your browser — no upload, no signup, works offline

What is

Tip (gratuity) and split bill

A tip, or gratuity, is an extra payment for service, usually expressed as a percentage of the bill. By etiquette it is calculated on the pre-tax subtotal, though card prompts and many diners apply it to the post-tax total. The grand total is the bill plus any tax plus the tip, and splitting a bill divides that grand total — and the tip — equally across the number of people sharing it. Tip percentages are conventions that vary widely by country and by the type of service.

Calculators

Related terms

GratuityService chargeSplit billPre-taxPer personRound up

Frequently Asked Questions

In the US, 18–20% of the pre-tax bill is standard for sit-down service, 15% is the usual floor, and 25%+ rewards exceptional service.

For full-service US restaurants the common range is 18–20% of the pre-tax subtotal, with 15% treated as a minimum and 25% or more for outstanding service. AnyTool Tip Calculator has one-tap 10/15/18/20/25% presets plus a slider for anything in between, and it works out the tip, the grand total and the per-person share live. These percentages are US conventions, though — tipping norms differ a great deal in other countries.

Etiquette guides tip on the pre-tax subtotal, but many people and most card machines tip on the post-tax total. Both are accepted; the dollar difference is small.

The Emily Post etiquette standard is to tip on the pre-tax subtotal, since tax is a government charge unrelated to service. In practice many diners — and most card payment prompts — calculate on the post-tax total, which is a little higher and which servers tend to prefer. The difference is minor: on a $100 bill with 8% tax, 20% is $20 pre-tax versus $21.60 post-tax. AnyTool gives you a toggle so you can use whichever base you prefer.

Divide the grand total (bill + tax + tip) by the number of people. AnyTool shows both the tip per person and the total per person automatically.

To split evenly, add the tip and any tax to the bill to get the grand total, then divide by the number of people sharing it. AnyTool Tip Calculator does this as you adjust the +/− people stepper, displaying the tip per person and the total per person. An optional round-up-per-person mode bumps each share to a clean whole amount and lets the tip absorb the rounding, which is handy when everyone is paying in cash.

Yes, it is free with no signup, and nothing is uploaded — every calculation runs in your browser and the page works offline.

AnyTool Tip Calculator is completely free with no account or limits, and all math runs on a small, unit-tested engine entirely in your browser, so the amounts you type are never sent to a server. Remember that tipping customs vary by country — a service charge may already be included, especially for large parties — so check the bill before tipping again, and treat the built-in percentages as US-style defaults rather than universal rules.

Detailed Explanation

Methodology

How the Tip Calculator Works

The calculator computes the tip as base × percent ÷ 100, where the base is either the pre-tax bill (the etiquette default) or the post-tax total (bill + tax) depending on a toggle. The grand total is bill + tax + tip. When the bill is split, each person’s total is grand total ÷ number of people and each person’s tip is tip ÷ number of people. An optional round-up nudges either the grand total or each person’s share up to the next whole currency unit, and the extra amount is absorbed by the tip so the bill and tax are never altered. Every result is produced by a pure function in a small, unit-tested engine, live in the browser.

  • Tip = base × percent ÷ 100 (base = pre-tax bill or post-tax total)
  • Grand total = bill + tax + tip
  • Per person = grand total ÷ number of people
  • Round-up is absorbed by the tip; bill and tax stay exact
  • All math is client-side JavaScript with no server round-trip
How It Works

Tipping on Pre-Tax vs Post-Tax, and US Conventions

Etiquette guides such as the Emily Post Institute calculate the tip on the pre-tax subtotal, on the reasoning that tax is a government charge unrelated to service quality. In practice, many diners and most card-machine prompts tip on the post-tax total, which is slightly higher and which surveyed servers tend to prefer; the difference is small (on a $100 bill with 8% tax, 20% is $20 pre-tax versus $21.60 post-tax). For US full-service restaurants the common range is 18–20% of the subtotal, with 15% as a floor and 25%+ for exceptional service; large parties of six or more are often charged an automatic 18–20% gratuity. The calculator defaults to pre-tax but lets you switch, and offers 10/15/18/20/25% presets plus a slider.

  • Emily Post etiquette: tip on the pre-tax subtotal
  • Card prompts and many diners tip on the post-tax total
  • US norms: 15% floor, 18–20% standard, 25%+ exceptional
  • Parties of 6+ often have an 18–20% gratuity added automatically
  • Dollar difference between bases is small on a typical bill
Limitations

Tipping Customs Vary by Country — What This Cannot Decide

The built-in percentages are US conventions, not a universal rule. In much of Europe and Asia a service charge is frequently already included on the bill, tips are far more modest, and rounding up is sufficient; in some places tipping is not customary at all. The tool does the arithmetic but cannot tell you what is appropriate where you are, and it cannot detect a service charge that is already on the bill — always check before tipping again. Rounding is applied only as a convenience and is absorbed by the tip; figures are shown to two decimals while full precision is used in the math. It is an estimator for everyday bill-splitting, not a point-of-sale or payroll system.

  • Preset percentages are US-style conventions, not global rules
  • Many countries include a service charge or expect only rounding
  • Cannot detect a gratuity already added to the bill
  • Rounding is a convenience, absorbed by the tip
  • An estimator for bill-splitting — not a POS or payroll system
Privacy & Security

Privacy and Offline Use

Because all computation runs in the browser, the bill and tip amounts you enter are never sent to a server, there is no account or tracking, and the page works offline after first load. The calculator is built on a shared, unit-tested tip engine so its behaviour is consistent and verifiable, and the full breakdown — bill, tax, tip, grand total and the per-person split — can be copied to the clipboard with one tap.

Tip calculation: in-browser (AnyTool) vs typical online tip calculators
CapabilityAnyToolTypical online tip calculators
ProcessingRuns in your browserOften server-side
Tip basePre-tax or post-tax toggleUsually fixed
Split billTip & total per personSometimes total only
Round-upTotal or per person, tip absorbs itRarely offered
Optional taxPercentage or flat amountFrequently absent
Currencies7, with live formattingOften USD only
Works offlineYes (PWA)No
Cost / signupFree, no signupOften ad-heavy or gated

AnyTool computes tips locally and uploads nothing. Comparison as of June 2026.