Rent split
Split the rent without the argument.
Bigger room, private bath, walk-in closet - the math accounts for it. Send your roommates the link and settle it.
Leave square feet blank for an average-size room. 40% of the rent (kitchen, living room, shared spaces) is split equally; the rest follows room size, with a private bath counting +25% and each perk +6%.
The fair split
Room 1
$1,200
50.0% of rent
Room 2
$1,200
50.0% of rent
The link opens this exact split - numbers, rooms and all
Agreed on the numbers? Put it in writing with the roommate agreement builder →
What's the fairest way to split rent?
An even split feels simple, but it's only fair when the rooms are actually equal. The fair method is to weight each person's share by what their bedroom is worth - its size, whether it has a private bathroom, and perks like a walk-in closet or a balcony - while treating shared space (kitchen, living room, hallways) as an equal benefit to everyone. Only the bedroom differences should move the numbers.
How much more should a bigger room or private bath pay?
Square footage does most of the work: a bedroom with 40% more floor space carries roughly 40% more of the “private space” portion of rent. A private bathroom is the other big lever - a common rule of thumb adds about 20–30% extra weight to that room, and the calculator above uses 25%, which lands close to the real price gap between en-suite and shared-bath rooms in most markets.
Worked example: on $3,000 total rent, three equal rooms would be $1,000 each - but if one room is larger with its own bathroom, a fair split might land closer to $1,200 / $920 / $880. The exact figures depend on your rooms; enter them above and share the result link so everyone sees the same math.
One caution the calculator can't enforce: the landlord almost always holds all tenants jointly responsible for the full rent, whatever your internal split is. Put the agreed split - and each person's deposit share - in a roommate agreement everyone signs.
Frequently asked questions
What's the fairest way to split rent with roommates?
Weight each bedroom by what it's actually worth: square footage, a private bathroom, and perks like a walk-in closet or balcony. Common areas benefit everyone equally, so only the bedroom differences should move the split. That's exactly what this calculator does.
Should rent be split equally if the rooms are different sizes?
Usually not. If one room is 180 sq ft with its own bath and another is 100 sq ft by the kitchen, an equal split means the small room subsidizes the big one. A proportional split keeps resentment from building over a year-long lease.
How much more should someone pay for a private bathroom?
A common rule of thumb is 20-30% more weight for the room. This calculator uses 25%, which lands close to what the price difference between en-suite and shared-bath rooms looks like in most markets.
How do we make the split official?
Put it in a roommate agreement everyone signs - the split, the deposit shares, and what happens if someone moves out early. Remember the landlord usually holds all of you responsible for the full rent regardless of your internal split.
Roommate moving in mid-month? Prorate their first month before you split it →