Free, envy-free rent splitting for roommates
The Rent Split Calculator is a free tool that divides rent fairly among roommates when the rooms are not the same. One bedroom may be larger, another may have a private bathroom, and a third may face a noisy street — so splitting the total evenly almost always leaves someone feeling short-changed. Fair Divider prices each room instead, producing a split that is envy-free: once the calculator assigns who pays what, no participant would rather swap into another roommate's room at the rent that roommate is paying.
Using it takes about two minutes. Enter the total rent, add each room, and add each participant. Each roommate then picks the room they prefer at the prices the calculator currently proposes; the prices adjust after every choice until they settle on a fair assignment. The amounts always sum exactly to the total you entered, down to the cent.
There is no account to create, no ads and no tracking — just open the page and start. Fair Divider works for two, three, four or five roommates.
Learn how Fair Divider works, or jump straight to splitting rent 3 ways. By situation: roommates, an Airbnb cost split, or a student flat.