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CALCPARK

Tip Calculator

Work out the tip and total for any bill, split it between people, round up to whole amounts and tip on the pre-tax amount if you prefer.

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How to use it

  1. Enter the bill amount and pick a tip percentage – tap a preset (10, 15, 18, 20, 25%) or type your own.
  2. Set how many people share the bill; the tool shows what each person pays and their share of the tip.
  3. Choose a rounding option to land on whole amounts for the total or for each person.
  4. If your receipt includes sales tax and you prefer to tip on the pre-tax amount, tick the option and enter the tax rate.
  5. Copy the summary or share the link with the table.

Example

Bill 85.50, tip 18%, three people: tip = 85.50 × 0.18 = 15.39, total 100.89, per person 33.63 (5.13 of it tip). With “round up per person” each share becomes 34.00, the total 102.00 and the tip 16.50, which is 19.3% of the bill. With an 8% sales tax included and tipping pre-tax, the base is 85.50 ÷ 1.08 = 79.17 and the 18% tip is 14.25.

Formulas and conventions

base = bill                          (or bill ÷ (1 + tax%/100) when tipping before tax)
tip = base × tip% / 100
total = bill + tip
per person = total ÷ people;   tip per person = tip ÷ people
round up total:     total ← ⌈total⌉,            tip = total − bill
round up per person: share ← ⌈total ÷ people⌉,  total = share × people, tip = total − bill

Amounts are calculated at full precision and shown with two decimals, so shares of a three-way split may differ from the total by a cent when added back. The tax option assumes the tax is a flat percentage already included in the bill; service charges that are already on the receipt should be deducted from the bill first if you do not want to tip on them. Customs vary widely by country and by setting (restaurant, delivery, taxi, hotel); the presets are common restaurant values, not recommendations.

Sources: US Department of Labor – Tips, Internal Revenue Service – Tip income.

Questions

Should I tip on the amount before or after tax?
Either is accepted; tipping on the pre-tax amount is a common US convention and slightly cheaper. Tick the pre-tax option and enter the tax rate to see the difference – on a 108.00 bill with 8% tax it is 1.60 at 20%.
How do I split a bill unevenly?
This tool splits evenly. For uneven shares, enter each person’s items as the bill with 1 person, note their totals, and add them up.
What does "round up per person" do when the share is already whole?
Nothing. Rounding only moves up to the next whole unit when there are cents left over; a 120.00 total split four ways stays at 30.00 each.