Rent Split Calculator
Bigger bedroom, bigger share. Enter your rent and bedroom sizes to see a fair rent for every roommate — couples and shared space included.
Bedrooms
- sq ftPeople in this room
- sq ftPeople in this room
- sq ftPeople in this room
This part of the rent is split equally per person. The rest is split by bedroom size.
Rent per person
Enter your total rent and bedroom sizes to see each person's rent.
How the rent is calculated
Rent pays for two kinds of space: the shared space everyone uses, like the kitchen and living room, and the bedrooms each person has to themselves. The calculator splits them separately.
The shared part is split equally between everyone who lives there. The bedroom part is split by size, so a bedroom twice as big pays twice as much of it. If two people share a bedroom, they split that room's part between them. Each person's rent is their bedroom part plus their shared part, rounded so the total comes back to the exact rent.
- Shared part (50%)
- $1,200 ÷ 3 = $400 each
- Room A, 180 sq ft
- 180/440 of $1,200 = $490.91
- Room B, 140 sq ft
- 140/440 of $1,200 = $381.82
- Room C, 120 sq ft
- 120/440 of $1,200 = $327.27
- Room A pays
- $890.91
- Room B pays
- $781.82
- Room C pays
- $727.27
$890.91 + $781.82 + $727.27 = $2,400.00. Compared with an even split of $800 each, the biggest room pays about $91 more and the smallest about $73 less — a difference most roommates agree is fair.
Read the full guide: how to split rent fairly with roommates
Rent split questions
Room sizes, couples, and the shared kitchen.
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