Rent Split Calculator

Split rent and shared bills between flatmates, equally or in proportion to room size or income.

Person A pays

₹20,400.00

Person B pays₹13,600.00
Person C pays₹0.00
Total being split₹34,000.00
How it was splitSplit in proportion to room size

Works out in your browser. Nothing you type is sent anywhere.

In short: Rent Split Calculator

Rent and bills of ₹34,000.00 between the people entered works out at ₹20,400.00 for the first and ₹13,600.00 for the second. Split in proportion to room size. The shares are worked out in whole paise so they add back to the total exactly, which saves the monthly argument about the odd rupee.

What is Rent Split?

Splitting rent means dividing the rent and the shared bills between the people living there, by whichever rule they have agreed.

How is Rent Split calculated?

share = total \times \frac{w}{\sum w}

Each person is given a weight, which is one for an equal split, their room size for a split by area, or their income for a split by income. Each share is the total times that person's weight over the weights added together.

sharewhat one person pays
totalthe rent plus the shared bills
wthat person's weight under the rule chosen

A worked example

Inputs and results for the worked example
Result
Total rent	₹30,000
Shared bills on top	₹4,000
Split it	By room size
Person A: room size (sq ft) or income	150
Person B: room size (sq ft) or income	100
Person C: leave at 0 if there is no third person	0
Person A pays	₹20,400.00
Person B pays	₹13,600.00
Person C pays	₹0.00
Total being split	₹34,000.00
How it was split	Split in proportion to room size

Every figure in this table is produced by the same calculation the tool above runs.

How to use this rent split calculator

Enter the rent and the shared bills.
Choose how to split it: equally, by room size, or by income.
Enter each person's room size or income, as the rule needs.
Leave the third person at zero if there are only two of you.

Questions people ask

Which split is fairest?

There is no single answer, which is why all three are here. Splitting by room size suits a flat where one room is clearly larger or has the attached bathroom; splitting by income suits people at very different earnings; an equal split suits rooms that are much the same. Agreeing the rule before moving in matters more than which one you pick.

Should bills be split the same way as rent?

Often not. Rent follows the space, while electricity and internet follow use, so many households split rent by room and bills equally. Running the tool twice, once for each, handles that. Keep the method consistent month to month.

What about the deposit?

The deposit is usually shared in the same proportion as the rent, and returned the same way, so whoever paid more gets more back. Write down who paid what when you move in. It is the thing most often disputed when people move out.

Can this handle more than three people?

Not directly. For four or more, split the total between the groups first and then within each group, or use the ratio tool, which takes any two parts and shares any amount between them. The arithmetic is the same.

Accuracy and sources

Checked by the Daytoolz team on 16 October 2026. How we check our tools.

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