Bill splitting calculator
Even splits are easy. Splitting by shares, where somebody had two courses and somebody had tap water, is the useful case.
%
Even split per person
54.00
- Total including tip
- 270.00
- Your share by what you ordered
- 87.75
- What the even split costs you
- -33.75
- Rounded up per person
- 54.00
- Surplus from rounding
- 0.00
Show the working
- Total bill = 240
- People = 5
- Your share of the items = 65
- Total of all items = 200
- Tip and service = 12.5
- Total including tip = 240 * (1 + 12.5/100) = 270
- Even split per person = 270 / 5 = 54
- proportion = 200 > 0 ? 65 / 200 : 0 = 0.325
- Your share by what you ordered = 270 * 0.325 = 87.75
- What the even split costs you = 54 - 87.75 = -33.75
- Rounded up per person = ceil(54) = 54
- Surplus from rounding = 54 * 5 - 270 = 0
Values are shown to six significant figures here; the arithmetic itself runs on exact fractions and is only rounded where a number is printed.
Scenarios & local history
Compare a saved scenario
Recent calculations
The formula
- fair share = total x (your items / all items)