Four split methods
Equal split is simple and common; income-based is fairer when earnings differ significantly; room-size split accounts for different bedroom dimensions; custom lets you set exact amounts.
Roommate Rent Split Calculator
Calculate how to split rent fairly between roommates. Split by equal share, income ratio, or room size. Free rent splitter with shareable results.
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How to use Roommate Rent Split Calculator
- 1
Enter the total monthly rent and utilities.
- 2
Set the number of roommates (up to 6).
- 3
Enter each roommate's name.
- 4
Choose a split method: Equal, By Income, By Room Size, or Custom.
- 5
For income-based splits, enter each person's monthly take-home pay.
- 6
For room-size splits, enter each room's size in square feet or metres.
- 7
Copy the results or share the URL with your roommates.
Why use this tool?
Shareable results URL
The calculator encodes all inputs into the URL so you can share the exact calculation with roommates for transparency and agreement.
Utilities included
Add internet, electricity, gas, and other shared costs to the total and split them alongside rent in the same calculation.
Frequently asked questions
What is the fairest way to split rent with roommates?
The "fairest" method depends on your situation. Equal split is simplest and avoids income comparisons. Income-based splitting (each person pays the same percentage of their income) is often considered most equitable. Room-size splitting makes sense when bedrooms vary significantly in size or amenities.
How do I split rent by room size?
Calculate each room's share as a percentage of total living space: (room size ÷ total bedroom area) × total rent. This calculator does the maths for you — just enter each room's square footage.
Should utilities be split the same way as rent?
Many roommates split utilities equally regardless of the rent split method, since everyone uses roughly the same amount of electricity and internet. However, if usage varies significantly (e.g., one person works from home), you may prefer to split utilities the same way as rent or track actual usage.
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