Rent split calculator
Split rent fairly by room size, private bathroom and perks
1The place
2The rooms
Blank = average.
Blank = average.
Perks: a big closet, good light, a balcony
The fair split
- Sam+$247$1,447
- Alex−$247$953
Sam $1,447Alex $953
You took the small room. It seemed easy. Rent is $1,600, so you each pay $800.
Your roommate got the big one, with its own bathroom.
By March, every time you wait for the shower, you do the math.
It's not really the money. It's the unfairness nobody said out loud, sitting in the kitchen with you.
Split it by what everyone gets, and there's nothing left to resent.
Three steps
- 1
Split the shared space evenly
Kitchen, living room, hallway. Everyone uses them, so 40% of the rent splits evenly.
$960÷2=$480 each - 2
Weigh each room
Size, plus 25% for your own bathroom and 6% per perk.
180 sq ft×1.25=225 - 3
Split the rest by weight
Bigger, nicer rooms carry more of the other 60%.
$1,440×225 of 335=$967
So Sam pays $1,447 and Alex pays $953. Not $1,200 each.
Write it down
A number you all agreed on today is easy to forget in six months. Put the split, the deposit and the “what if someone leaves” plan in one page you all sign.
Build a roommate agreement →Good to know
What's the fairest way to split rent?+
By what each person gets. Shared spaces split evenly; bedrooms split by size and perks, like a private bath.
Should we split evenly if rooms are different sizes?+
Usually not. Even splits make the small room pay for the big one, every month, for a year.
How much more for a private bathroom?+
A common rule of thumb is 20 to 30% more weight for the room. We use 25%.
How do we make it official?+
Put it in a roommate agreement you all sign. Your landlord can still hold everyone responsible for the full rent.