Sharehouse Fair Rent Splitter
Don't argue with your roommates. Let math decide exactly how much everyone should pay based on their room size.
Sharehouse Rent Splitter
Mathematically fair rent distribution based on room size.
Fair Rent Split
Roommate A
12m²
$271.11
per week
Roommate B
15m² + Ensuite
$328.89
per week
How to use the Sharehouse Rent Splitter
Enter the total weekly rent for the house.
Add a roommate for each bedroom, entering their room size in square meters.
Tick the box if their room has a private ensuite.
The calculator will distribute 40% of the rent equally (for common areas) and 60% proportionally based on room size.
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Open toolFrequently Asked Questions
How is the fair rent mathematically calculated?
This tool uses a standard fairness model: 40% of the total rent is split equally among all housemates (for common areas like the kitchen and living room), and the remaining 60% is split proportionally based on the square meterage of each individual bedroom, plus an added premium for ensuites.
How much extra should an ensuite cost?
Typically, an ensuite (private bathroom) in a sharehouse is worth a $20 to $50 per week premium, depending on the overall quality of the house and location.
Is room size really that important?
Yes! A master bedroom is often 30-40% larger than a standard bedroom. If everyone pays the exact same rent, the person with the smallest room is subsidizing the master bedroom.