Last updated: May 2026
Rent Split Calculator for Roommates
Compare equal, income-based, and room-size rent splits for two, three, or four roommates.
US apartment example
United States dollars are used in the split table.
This calculator uses US dollar inputs for roommate rent planning.
Rent details
Add the monthly rent and choose how many people are sharing.
Split method
Choose whether to split equally, by income, or by room size.
Roommate details
Names are optional. Income or room scores are only needed for those split methods.
Estimate result
Add detailsEnter the monthly rent
Add monthly rent and choose a split method to estimate each roommate's share.
Estimate only. Rental decisions vary by landlord, property manager, credit history, and application details.
Best ways to split rent fairly
A fair rent split depends on the household. Equal splits are quick and easy, while income-based and room-size splits can feel fairer when people have very different incomes or bedrooms.
Equal split vs income split
Equal splits are easiest to explain. Income splits can reduce pressure on a lower earner, but everyone needs to be comfortable sharing income information. If income also affects whether you can apply for a home, use the roommate affordability calculator.
Room-size split explanation
Room-size scores are a simple way to account for different bedrooms. A small room might be 1, a medium room 1.25, and a large room 1.5. The scores do not have to be perfect; they just make the conversation more structured.
Remember the full moving budget
Rent is only one part of sharing a home. The move-in cost calculator can help estimate security deposit, first month rent, and shared setup costs.
Answers at a glance
Frequently asked questions
What is the fairest way to split rent?
There is no single fair method. Equal splits are simple, income-based splits consider ability to pay, and room-size splits reflect bedroom differences.
How does an income-based rent split work?
Each roommate pays a share based on their share of total household income, so higher earners pay more.
How does a room-size split work?
Each room gets a score, such as 1 for small, 1.25 for medium, and 1.5 for large. Rent is split by those scores.
Should bills be split the same way as rent?
Some households split bills equally even when rent is split differently. Agree this clearly before moving in.
Can this calculator settle a disagreement?
It can show options, but roommates still need to agree what feels fair for their situation.
Related tools
Rent Affordability Calculator
Compare monthly rent with gross monthly income before you apply.
Best for: Checking common 2.5x rent and 3x rent examples.
Co-signer Income Calculator
Estimate whether a co-signer may help your rental application.
Best for: Renters who may need extra application support.
Roommate Affordability Calculator
Combine incomes for roommates applying for an apartment together.
Best for: Roommates comparing household income with monthly rent.