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Tip Calculator

This calculator works out the tip, the final bill and the amount each person owes. You can tip on the pre-tax or post-tax amount, split the bill between any number of people, and switch the currency for display.

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Calculate tip on

Tip amount

$18.00
Bill subtotal
$100.00
Total bill
$118.00
Total per person
$59.00
Tip per person
$9.00

How to use this tool

  1. 1 Enter the bill amount before tax and, if applicable, the sales tax rate.
  2. 2 Choose a preset tip percentage or type your own. Use the tip basis control to decide whether the tip is calculated before or after tax.
  3. 3 Set the number of people sharing the bill. The per-person amounts update immediately.
  4. 4 Pick a currency symbol if you need one, then use Copy summary for a ready-to-share breakdown.

Formula and calculation logic

Tip amount

Tip = Tip base × T ÷ 100

The tip base is the bill before tax, or the bill plus tax when “after tax” is selected. This is why two people can enter the same percentage and still leave different amounts.

Total bill

Total = Bill + Tax + Tip

Tax is added to the bill before the tip when tipping after tax. The total is what you actually pay.

Per-person amount

Per person = Total ÷ People

The calculator divides the total and the tip by the number of people. Each share is rounded for display; adding up rounded shares can differ from the total by one cent.

Worked example

100 bill, 18% tip, two people

A 100.00 bill with no tax, an 18% tip and two people splitting it.

  1. Tip: 100.00 × 18 ÷ 100 = 18.00
  2. Total: 100.00 + 18.00 = 118.00
  3. Per person: 118.00 ÷ 2 = 59.00

The tip is 18.00, the total is 118.00, and each person pays 59.00 including a 9.00 tip share.

20% tip after 10% tax, four people

A 100.00 bill, 10% sales tax and a 20% tip calculated on the post-tax amount.

  1. Tax: 10.00
  2. Tip base: 110.00
  3. Tip: 110.00 × 20 ÷ 100 = 22.00
  4. Total: 100.00 + 10.00 + 22.00 = 132.00

The total is 132.00, or 33.00 per person for four people, with 5.50 of the tip per person.

Edge cases and accuracy

Tipping before or after tax

Tipping before tax uses only the bill amount. Tipping after tax uses the bill plus tax, so the tip is slightly higher for the same percentage.

Rounding and split bills

Each per-person figure is rounded to the currency’s smallest unit for display. Four people sharing 100.00 exactly may each see 25.00, while an amount that does not divide evenly can leave a one-cent difference.

Number of people

At least one person is required, and the calculator accepts up to 100. A zero or fractional number of people is rejected rather than producing an infinite per-person amount.

Customs vary

Tip percentages are a local custom, not a legal requirement. The calculator applies the percentage you choose and does not judge what is appropriate for a country or venue.

Frequently asked questions

Should I calculate the tip before or after tax? +

It depends on local custom. Tipping on the pre-tax bill is common in some places, while others tip on the total including tax. The calculator lets you choose and shows the difference.

How is the per-person amount calculated? +

The bill, tax and tip are added together, then divided by the number of people. The same division is applied to the tip so each person can see their share.

Can I enter a custom tip percentage? +

Yes. Use the preset buttons for common percentages or type any value from 0 to 100 in the tip field.

Does the currency selector convert money? +

No. It changes the symbol and the number of decimal places shown, for example whole yen for JPY. No exchange rate is applied.

Why do the per-person amounts not add up exactly? +

Each share is rounded for display. When an amount does not divide evenly, the rounded shares can differ from the exact total by one cent.

Is a tip required? +

No. Tipping is voluntary and customary expectations differ by country and situation. The calculator only performs the arithmetic for the percentage you choose.