RoomRatio
Fair rent splitting

Fair rent splitting for roommates and shared homes

Choose a method, see each person’s amount and the formula behind it, share a read-only summary — then run the same split every month.

Free while we’re in early access. No card.

No signup to calculateIncome stays privateShareable summary
Monthly rent · split by room
$2,000
A
Alex
Larger room · 12 pts
$1200
S
Sam
Smaller room · 8 pts
$800
rent × room points ÷ total points

One split rule never fits every payment

RoomRatio keeps rent, bills, and one-off costs as different things — each split the way it actually happened.

Split the rent

By room quality, by income, manual %, or equal — you choose the basis.

Rooms aren't equal, so the split isn't either.

Add the bills

Utilities and internet split equally or between just the people who share them.

Rent is not bills.

One-off costs

A repair or a shared purchase, split the way it actually happened.

Not everything is monthly.

Share amounts, not salaries

For share previews, raw income stays out of the link. If you save a household, we will ask before storing any income inputs.

No raw income in a share link
Stored only with explicit consent
Share the amount, never the salary

Run it every month

Free for now

Turn the agreed split into a monthly routine — without chasing anyone.

Save the agreement as a household
Keep the recurring rent rule so next month is one tap.
Invite your housemates
Read-only until they join — and income is never revealed.
Recurring payments + one-off expenses
Each person's share, with their own split basis.
Mark paid or unpaid
See where things stand without chasing anyone.
Maple St · household3 participants
A
Alex (you)
Larger room
Paid
S
Sam
Joined
Paid
J
Jordan
Invited
Pending
Recurring · this month$2,000
Try it now

Split rent in ten seconds

$
YYou
RRoommate
Each person pays
You$1,200.00
Roommate$800.00
Pricing

Everything is free right now

Early users keep it free as long as we can, with low prices later.

When a household has a cost, it’s just another recurring payment — shared between participants, and you can leave it out of the common expenses.

Built to be trusted, not loud

Transparent formulas — every amount shows its math
Your income isn't shared
No account needed to calculate
A clear summary you can share — not legal advice

Questions, answered plainly

Is RoomRatio free?
Yes — it's free during early access, and the calculator never needs an account.
How do you split rent fairly?
By room quality, income, manual percentages, or equal. You choose the method and we show the formula behind every amount.
Do you store my income?
No raw income goes into a share link. It's stored only if you save a household and give explicit consent.
Is the agreement legally binding?
No. It's a clear summary you can share, not legal advice.
Can I split utilities and one-off costs too?
Yes — bills and one-off expenses each get their own split basis, separate from the rent.

A calculator for every shared cost

Rent is the start. Bills, deposits, and moving costs each have their own.

Agree on a fair rent split. See the math. Share the result.

Start free while we’re in early access. The calculator never needs an account.