Quick answer
Each person pays = total × (1 + tip ÷ 100) ÷ people. A $120 bill with a 20% tip split four ways is $36.00 each, including a $24.00 tip, for $144.00 in total.
Enter the bill total, tip percentage and number of people. The calculator returns each share, the tip and the total.
Related tools: Unit Price Calculator: Price per unit for one or two items, and which is cheaper. Rent Split Calculator: Split rent in proportion to each person's income. Water Bill Calculator: Water bill from usage, rate and a base charge you enter.
How to use the Split Bill Calculator
- Enter bill total ($) (above 0).
- Enter tip (%) (between 0 and 100).
- Enter people (a whole number, between 1 and 1000).
- Press Calculate to see the result, and use Reset to start again.
| Input | What to enter | Allowed values |
|---|---|---|
| Bill total | A number, in $ | > 0 |
| Tip | A number, in % | ≥ 0, ≤ 100 |
| People | A whole number | ≥ 1, ≤ 1000 |
Formula and method
Formula
per person = total × (1 + tip ÷ 100) ÷ people
IEEE-754 double precision; money shown to cents, rates to 4 decimals. Results are estimates, not financial advice.
Splits the bill and tip evenly.
Worked examples
These examples are verified: each one is an automated test case that the live calculator must reproduce exactly.
Example 1
Inputs: Bill total = 120; Tip = 20; People = 4.
| Result | Value |
|---|---|
| Each person pays | $36.00 |
| Tip | $24.00 |
| Total with tip | $144.00 |
Example 2
Inputs: Bill total = 86.4; Tip = 15; People = 3.
| Result | Value |
|---|---|
| Each person pays | $33.12 |
| Tip | $12.96 |
| Total with tip | $99.36 |
The first line is the headline result (each person pays). Below it the split Bill Calculator lists tip and total with tip, which describe the same case from other angles. IEEE-754 double precision; money shown to cents, rates to 4 decimals. Results are estimates, not financial advice.
Tip first or after
Tip is calculated on the bill before the tip. In places where the tax is added, some people tip on the pre-tax amount. The tip field is optional (0%).
Unequal shares
For uneven orders it is fairer to split by item. Rounding to whole dollars per person leaves a small difference, so someone should cover the cent.
How the result changes with bill total
Holding every other input at the first worked example, this table changes only bill total. It shows how sensitive the answer is to that one value; each row was produced by running this calculator.
| Bill total | Each person pays | Tip | Total with tip |
|---|---|---|---|
| 60 | $18.00 | $12.00 | $72.00 |
| 120 | $36.00 | $24.00 | $144.00 |
| 240 | $72.00 | $48.00 | $288.00 |
| 480 | $144.00 | $96.00 | $576.00 |
What happens with invalid input
These messages are produced by the calculator itself, so you know what to fix.
- People: entering "0" shows "People must be at least 1." beside that field and no result.
- Bill total: entering "0" shows "Bill total must be greater than 0." beside that field and no result.
Choosing between the Split Bill Calculator and similar calculators
Each row shows what a related calculator on this site asks for and what it returns, so you can pick the one that matches your question.
| Calculator | You enter | It returns |
|---|---|---|
| [Unit Price Calculator](/finance/unit-price-calculator/) | price of item 1 and quantity of item 1 | Cheaper per unit |
| [Rent Split Calculator](/lifestyle/rent-split-calculator/) | total rent and each person's income | Shares |
| [Water Bill Calculator](/lifestyle/water-bill-calculator/) | water used, rate per unit and fixed monthly charge | Estimated bill |
| [Auto Loan Calculator](/finance/auto-loan-calculator/) | vehicle price, down payment and interest rate | Monthly payment |
| [Amortization Calculator](/finance/amortization-calculator/) | loan amount, interest rate and term | Monthly payment |
Background: personal finance estimates
Financial calculators project from the numbers you give them. Long-range tools depend on guesses about returns and tax rates that are unlikely to hold exactly, payoff tools assume a fixed payment and rate, and tax or salary results depend on the tax year, filing status and country. Official calculators say their output is for reference only.
For decisions that matter, use conservative inputs and check the figures against your lender, plan documents or a qualified adviser.
Assumptions and limitations
- Tip is optional (0%)
Results are estimates for planning, not financial advice. Lender terms, fees, taxes and rounding rules can change real figures, so confirm important numbers with your lender or a licensed adviser.
If a required value is empty, not a number, or outside its allowed range, the form marks that field with a message and shows no result instead of a misleading number. The automated checks deliberately try invalid entries for people and bill total to confirm this.
Frequently asked questions
What tip is customary?
15 to 20% in the US.
Who pays the tax?
Split it in proportion.
How do I split with rounding?
Round up and tip a little more.
What does the Split Bill Calculator calculate?
Each person's share of a bill with tip. It returns Each person pays, Tip and Total with tip.
What formula does the Split Bill Calculator use?
per person = total × (1 + tip ÷ 100) ÷ people. Splits the bill and tip evenly.
What do I need to enter in the split Bill Calculator?
You enter Bill total ($), Tip (%) and People.
How is the result rounded or limited?
IEEE-754 double precision; money shown to cents, rates to 4 decimals. Results are estimates, not financial advice. Tip is optional (0%).
What is an example of a split Bill result?
With bill total 120, tip 20 and people 4, the each person pays is $36.00.
Can I rely on this calculator for a decision?
Results are estimates for planning, not financial advice. Lender terms, fees, taxes and rounding rules can change real figures, so confirm important numbers with your lender or a licensed adviser. For this calculator in particular: Tip is optional (0%).
Related calculators
- Unit Price Calculator — Price per unit for one or two items, and which is cheaper.
- Rent Split Calculator — Split rent in proportion to each person's income.
- Water Bill Calculator — Water bill from usage, rate and a base charge you enter.
- Auto Loan Calculator — Monthly car payment after down payment and trade-in.
- Amortization Calculator — Full amortization schedule with optional extra monthly payments.
- Loan Calculator — Estimate your monthly loan payment, total interest and total cost.
Sources
- Standard time-value-of-money relations (e.g. Brealey, Myers & Allen, Principles of Corporate Finance)
Content last reviewed 2026-11-04. Formulas and worked examples are checked by automated tests against independently computed values.