Rent Split Calculator

    Fair rent split by room size

    Learn the formula

    Fair Split

    Master Bedroom(42.6%)
    $1021/mo
    Bedroom 2(31.9%)
    $766/mo
    Bedroom 3(25.5%)
    $613/mo

    Fair Rent Division by Room

    Splitting rent equally often feels unfair when rooms differ significantly in size, natural light, closet space, or street noise. This calculator divides rent proportionally by floor area, so each roommate pays based on the size of their private space. Shared spaces (living room, kitchen) are distributed equally among all residents.

    Simply enter the total monthly rent and the square footage of each bedroom (or any other metric like desirability score). The calculator distributes the total fair share per person, with a clear breakdown so everyone understands how the number was reached. Transparent math prevents roommate tension.

    Frequently Asked Questions