Everyday payments

Bill Split Calculator

Split a bill equally after adding tax and tip, both calculated on the entered base bill. Compare the total with the actual restaurant bill before paying.

Explicit formulas and worked examples
Check your inputs, then calculate
Data is calculated in this browser only

Check the stated input format, calculation convention and limits before using the result.

Check the example inputs, then calculate. Your values stay in this browser.

Equal shares only; separate individual items are not allocated.

Calculation notes

Understand the Bill Split Calculator

Bill Split Calculator validates bill before tax and tip, tip (%) of base bill, tax (%) of base bill, people before applying the displayed equation. Equal shares only; separate individual items are not allocated.

Formula and logic

What is the formula for the Bill Split Calculator?

Bill Split Calculator: total = bill × (1 + tip/100 + tax/100); each = total / people. Input definitions: bill = Bill before tax and tip; tip = Tip (%) of base bill; tax = Tax (%) of base bill; people = People. Use the selected convention throughout the calculation.

Worked example

How can I reproduce the Bill Split Calculator example?

Bill Split Calculator baseline input: Bill before tax and tip: 100; Tip (%) of base bill: 15; Tax (%) of base bill: 5; People: 4. Output: Per person (equal shares) = 30; Total = 120. Substitute these values into the displayed equation to reproduce the result.

How to read the result

How should I interpret the Bill Split Calculator result?

Read per person (equal shares) with its stated unit and convention. The default example and the independent worked scenario use different inputs, so compare the assumptions before comparing the numbers.
Change one input at a time and use the equation to explain the result; do not mix unit, grade-scale, time-zone or rounding conventions across comparisons.

Limits and assumptions

What limits apply to the Bill Split Calculator?

Equal shares only; separate individual items are not allocated.
Totals use unrounded arithmetic; cash rounding can leave a small residual to allocate.

Content and calculation reviewed: 2026-10-11

Understand the calculation

How to use it and the math behind it

Read the complete explanation

Four steps to check your inputs and results

Split a bill equally after adding tax and tip, both calculated on the entered base bill. Compare the total with the actual restaurant bill before paying.
Enter Bill before tax and tip, Tip (%) of base bill, Tax (%) of base bill, People in the stated format. Baseline values are for reproduction.
Check the output unit and convention: Read per person (equal shares) with its stated unit and convention. The default example and the independent worked scenario use different inputs, so compare the assumptions before comparing the numbers.
Change one input and compare the result. Equal shares only; separate individual items are not allocated. Totals use unrounded arithmetic; cash rounding can leave a small residual to allocate.