Enter the rent and who is living there, then choose how to split it: equally, by room size, or by income. Shares always add up to the exact total, and nothing you type leaves your browser.
This is a free interactive calculator. Turn on JavaScript to use it.
There is no single right answer. Equal splits are simple when the bedrooms are similar. If one room is much bigger or has a private bathroom, splitting by room size (or giving that room a premium) is fairer. If incomes differ a lot, some households split in proportion to income. What matters is that everyone agrees before signing, and writes it down.
Many do when bedrooms differ noticeably. Measure each bedroom, then split the rent in proportion. Shared areas are usually split equally, so some people split only part of the rent by room size and the rest equally. The calculator splits the whole amount by size; adjust the numbers to match your agreement.
Most households split utilities and internet equally, because everyone uses them. If one person works from home or runs a space heater all day, you can agree on a different share. Put it in your roommate agreement so there are no surprises.
It is free and needs no account. The numbers stay in your browser and are not sent to RoomieHunt.
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