Tip Calculator
Calculate tip amount, total bill, and per-person cost from your bill total, tip percentage, and party size.
How It's Calculated
Formula
\text{tip} = \text{bill} \times \frac{\text{tipPercent}}{100} \\ \text{total} = \text{bill} + \text{tip} \\ \text{perPerson} = \frac{\text{total}}{\text{partySize}}This calculator splits a restaurant or service bill into a tip amount, a grand total, and an even per-person share. The tip amount is the bill multiplied by the tip percentage divided by 100. The total is the bill plus that tip. The per-person amount divides the total evenly across the party size. This is a straightforward even split — it does not apply tax before or after the tip, does not split by individual items, and does not add a separate service charge; if your bill already includes tax, enter the full post-tax bill total and the calculator will tip on that amount.
Worked Examples
Bill $100, 20% tip, party of 4
- Tip = 100 x 20 / 100 = 20
- Total = 100 + 20 = 120
- Per person = 120 / 4 = 30
Bill $45.50, 18% tip, party of 1
- Tip = 45.50 x 18 / 100 = 8.19
- Total = 45.50 + 8.19 = 53.69
- Per person = 53.69 / 1 = 53.69
Frequently Asked Questions
Does this calculator apply tax before or after the tip?
Neither — this calculator does not add tax at all. It simply tips on whatever bill total you enter. If your bill already includes tax, enter that post-tax total and the tip will be calculated on it, matching how most people tip in practice.
Can I use a custom tip percentage instead of 15/18/20?
Yes. The tip percentage field accepts any non-negative number — 15%, 18%, and 20% are common defaults, but you can enter any percentage that fits your situation.
Does this split the bill unevenly by what each person ordered?
No. This calculator performs an even split: the total (bill plus tip) is divided equally by the number of people in the party. Per-item or per-person itemized splitting is not supported.
Why must party size be a whole number of 1 or more?
Party size represents a count of people splitting the bill, so it must be a positive whole number — a party of 0 would make the per-person division undefined, and a fractional party size doesn't correspond to a real group of people.