🧾 Split the Bill Unfairly
Split a restaurant bill fairly, by appetite or in pure chaos. Tip included.
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Sharpening pencils…
How to use Split the Bill Unfairly
- Enter your numbers
Use the sliders and boxes.
- Watch it update
Results change live as you type.
- Read the breakdown
Totals, bars and a silly verdict.
- Save or share
Save results to compare later.
What makes Split the Bill Unfairly fun
Fair, appetite and chaos.
Adds the tip before splitting.
No submit button needed.
The formula is shown on the page.
About this tool
Split the Bill Unfairly is a real bill-split calculator with silly modes. Add everyone, set an appetite slider for each person (the dessert-orderer gets ×1.5, the birthday person ×0), add the tip and choose Fair, By appetite or Chaos.
Fair mode is a normal even split. By appetite weights each share. Chaos mode is random and exists purely to start arguments.
Who it's for
Fair shares for unequal orders.
The birthday person eats free.
Quick shared-expense splits.
Tips & tricks
- Agree on the mode before you calculate.
- Use appetite for big differences in orders.
- Save the split and share it to the group.
Little questions about Split the Bill Unfairly
How does the appetite split work?
Each share = total × (person's appetite ÷ sum of appetites).
Can I make someone pay nothing?
Yes, set their appetite to 0 (perfect for birthdays).
Is chaos mode fair?
No. That is the point.
Is Split the Bill Unfairly free?
Yes. Split the Bill Unfairly is free, needs no sign-up and runs in your browser on phones and computers.
Is my data stored?
Only results you save, in your own history linked to a random ID — never your name.
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