Spendthrift Spendthrift

A split calculator that always adds up exactly.

Enter the bill and the people. Every share is exact, to the cent, with nothing left over.

Why the shares always add up.

Divide a bill by the number of people and there is almost always a remainder, a cent or two that a straight division drops. This calculator uses the largest-remainder method instead: everyone gets the same base share, then the leftover cents go to as many people as there are cents, one each, until the total matches exactly.

It runs in your browser. Nothing you enter here is sent anywhere, and there is no account to create.

It is one part of Spendthrift, a budgeting app that also understands splitting. The difference is what happens to your own share afterwards. For a bill involving a roommate's rent, see the split rent app; for a group of people sharing a wider set of expenses, see split expenses.

Questions.

What happens to the leftover cents when a bill does not divide evenly?

The calculator uses the largest-remainder method. Everyone gets the same base share, then the leftover cents go to as many people as there are cents, one each, so the total always matches exactly.

Is anything I type sent anywhere?

No. The calculator runs in your browser. Nothing is sent to a server, there is no account, and reloading the page clears it.

Can I split a bill unevenly, not equally, between people?

This calculator splits equally among everyone listed. For splitting rent by room size, see the split rent app.

Do I need to sign up or install anything?

No. It works in any browser, with no account and no app to install.

What a calculator cannot do that the app can.

One thing this page describes but cannot show

A one-off split is not a ledger. It has no memory of who paid last time and nothing to show your own budget afterwards.

A NUMBER NOW, OR A RECORD THAT KEEPS THIS CALCULATOR One bill, split now An answer you copy out Gone when you close the tab Nothing to check later THE APP Every bill, kept A running balance Still there next week Every share opens up Use the calculator. It is free, it needs no account, and it always will be. It is here because the question is real, not to make you download something. When one bill becomes a running balance between people, that is when a ledger earns its place.

A number now, or a record that keeps.

The calculator answers one bill and is gone when you close the tab. A ledger keeps every bill, holds a running balance, and is still there next week.

WHAT THIS CALCULATOR NEEDS FROM YOU Nothing. No account not now, not to see the answer No cookie the site sets none, anywhere No data sent the arithmetic runs in this page, on your device No sign up wall the answer is the whole thing It is a calculator. It should not know who you are.

What this calculator needs from you.

Nothing. No account, no cookie, no data sent, no sign up wall. The arithmetic runs in the page, on your device.

WHAT HAPPENS TO THE ODD RUPEE ₹100 split three ways THE HONEST ARITHMETIC 33.333 each, which nobody can pay WHAT WE DO Asha ₹34 carries the odd rupee this time Vikram ₹33 Meera ₹33 Adds to ₹100 Somebody has to have it. We say who, rather than hiding a third of a rupee.

What happens to the odd rupee.

₹100 three ways is 33.333 each, which nobody can pay. One person carries the odd rupee, and we say who.