Moving in together? Split the rent before it becomes a thing.
The most common source of roommate friction isn't the dishes — it's whoever quietly feels like they're overpaying for the smaller room. Settle it with numbers instead of vibes: add everyone, pick a method, done.
Built for how roommates actually split rent
Start with room size
Most shared houses don't have identical rooms. This defaults to splitting by square footage, so the bigger room pays a bit more.
Account for the good stuff
A private bathroom or extra closet space is worth something. Toggle the bonuses on or off depending on what your house agrees is fair.
Or just keep it simple
Switch to an equal split any time — some households would rather not weigh every square foot, and that's fine too.
Frequently asked questions
Should the person with the private bathroom pay more rent?
It's one of the most common roommate rent questions, and there's no universal rule — but a modest bump (10% is typical) is a common compromise that acknowledges the convenience without making that room unaffordable. This calculator defaults to that, and you can turn it off in one click.
What if one roommate's room is much bigger?
Splitting by room size handles this automatically — enter each room's square footage and the larger room's share scales up proportionally, rather than everyone paying the same amount regardless of space.
Is it weird to use a calculator for this instead of just agreeing verbally?
The opposite, usually — having an actual number that everyone can see the logic behind tends to prevent the awkward conversation three months in where someone feels shortchanged. It's easier to agree on a formula once than to renegotiate a vibe later.