A split rent app that weighs the rooms, not just the roommates.

An even split by headcount is often wrong, because rooms are not identical. Give each room a weight, size, a private bathroom, more light, whatever your household agrees on, and the rent follows it exactly.

Why weight, not just headcount.

Splitting rent by the number of people ignores the thing that actually differs: the rooms. A bigger room, one with its own bathroom, or one with better light is worth more, and an equal split quietly overcharges whoever has the smallest one. This calculator lets the household agree on a weight per room instead, size in square feet works, or a simple 1 to 10 score everyone accepts, and the rent follows that weight exactly, to the cent, using the same largest-remainder method as the split calculator.

More elaborate rent-splitting methods exist, asking about individual preferences and room amenities to find an envy-free split. This one is deliberately simpler: agree on a weight, enter it, done.

It runs in your browser. Nothing you enter here is sent anywhere, and there is no account to create. For the rest of a shared flat's expenses beyond rent, see split expenses.

How to use it.

  1. Enter the total rent

    Type the full amount due to the landlord, and pick the currency.

  2. Add each room

    Add a row for every room in the flat, named however you like.

  3. Give each room a weight

    Enter a number for each room, for example its size in square feet, or a 1 to 10 score you agree on together. Equal weights give an equal split.

  4. Share the result

    Copy the link and send it to the group. It carries the rent, the rooms and the weights, nothing else.

Questions.

What should I use as the weight?

Anything the household agrees measures a room's value fairly. Size in square feet is the most objective. A simple 1 to 10 score works too, as long as everyone accepts it before the number is entered.

Does an equal weight give an equal split?

Yes. Set every room's weight to the same number, or press "Reset to equal weights", and the rent divides evenly, the same as the plain split calculator.

Can I use this for utilities as well as rent?

Yes, run it again with the same rooms and a different total. For a whole month of shared expenses in one place, see split expenses.

What changes after the first month.

Three things this page describes but cannot show

Someone moving in mid month, a deposit held and returned at the end of the lease, and rent that changes for one room only.

SOMEONE MOVES IN ON THE EIGHTEENTH day 1 day 18, Dev moves in day 30 13 of 30 days FULL MONTH THIS MONTH Asha ₹14,400 ₹12,480 Vikram ₹12,000 ₹10,400 Meera ₹9,600 ₹8,320 Dev not here yet ₹3,120 The rent did not change. Only how many days each person was here. Nobody recalculates anything by hand, and nobody rounds in their own favour.

Someone moves in on the eighteenth.

Dev arrives on day 18 and pays for 13 of the month's 30 days. The rent did not change, only how many days each person was there.

A DEPOSIT IS HELD, NOT SPENT Deposit with the landlord never enters anyone's monthly budget, because it was never spent ₹84,000 RETURNED AT THE END Asha ₹28,000 ₹28,000 Vikram ₹23,333 ₹23,333 Meera ₹18,667 −₹4,000 ₹14,667 broken window Dev ₹14,000 ₹14,000 PUT IN DEDUCTED BACK A deduction lands on the person it belongs to, not on everybody.

A deposit is held, not spent.

₹84,000 sits outside everyone's monthly budget because it was never spending. At the end it returns in four shares, and a deduction lands on the person it belongs to.

ONE ROOM'S RENT CHANGES. THREE DO NOT. Asha ₹14,400 Vikram ₹12,000 ₹14,000 the room with the balcony Meera ₹9,600 Dev ₹7,200 before after The household total rises by exactly ₹2,000, and only one person pays it. Nothing is redistributed quietly across everyone to keep the split tidy.

One room's rent changes. Three do not.

The room with the balcony goes up ₹2,000. The household total rises by exactly that, and only one person pays it.