Roommate Rent Split Calculator

Split rent by bedroom size with shared common areas divided equally — fair when rooms differ in size.

Also known as split rent by room size, bedroom size rent split, roommate rent.

Enter values

Result

Largest room pays

$1,136.36

Each roommate

Split rent by bedroom size with shared common areas divided equally — fair when rooms differ in size.

Also known as: split rent by room size, bedroom size rent split, roommate rent.

Enter total rent, bedroom sizes (sq ft or m²), share of rent for common areas.
The result updates instantly as you type — press Calculate (or Enter) at any time.
Review the breakdown shown under the main result.
Use Copy result or Share to save the answer or send a link with your inputs.

Pays = common ÷ people + private × room ÷ total room area

Using the values pre-filled in the calculator above:

the calculator returns: