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Rent split calculator

Split rent fairly between roommates by income, by room size, or evenly. Enter your rent and see each person's share in seconds.

Free, no sign-in. The math runs in your browser, and Monio doesn't save what you type.

Calculator

How to split the rent

Everyone pays the same amount.

Who lives there

  • Person 1
  • Person 2

Each person's share

Enter your rent to see each person's share.

Your numbers stay in your browser. The link carries them, so send it only to people you'd share them with.

How to split rent fairly

There are three common ways to split rent between roommates. Agree on one before anyone signs the lease, and write it down.

Split the rent evenly

Divide the rent by the number of people. Three roommates sharing $2,400 rent each pay $800. This works best when the bedrooms are about the same size and everyone earns a similar amount.

Split rent based on income

Add up everyone's income, work out each person's percentage of the total, and pay that percentage of the rent. Say you take home $5,000 a month and your roommate takes home $3,000. You earn 62.5% of the $8,000 total, so on $2,000 rent you pay $1,250 and they pay $750. Rent then costs each of you the same 25% of your pay.

More examples, including how to leave everyone the same money after rent: how to split rent when you earn different amounts.

Split rent by room size

This calculator splits half the rent evenly, for the kitchen, living room and other space everyone uses, and the other half by bedroom size. Say three roommates share $2,400 rent and the bedrooms are 200, 100 and 100 square feet. The even half is $1,200, or $400 each. The room half is also $1,200: the 200 square foot room is half of all bedroom space, so it pays $600, and the two smaller rooms pay $300 each. In total that is $1,000, $700 and $700.

A private bathroom makes a room count 15% bigger. If the 200 square foot room has its own bathroom, it counts as 230, and the split becomes $1,041.86, $679.07 and $679.07. If your place has very little shared space, lower the shared-space percent.

Utilities

Many roommates split utilities evenly, since everyone uses about the same heat, power and internet. If you split rent by income, you can split utilities the same way. For moving in partway through a month and other cases, see how to split utilities and internet with roommates.

Splitting other bills?

Monio connects to Splitwise and counts only your share as spending. Say you pay a $200 dinner and friends owe you $150: Monio counts $50 as your spending, and their paybacks don't show up as income.

See how Monio works with Splitwise

Rent split questions

What is the fairest way to split rent?
There is no single fair way, so pick the one everyone agrees on before you sign the lease. Splitting evenly works when bedrooms and incomes are similar. Splitting by income works when one person earns a lot more. Splitting by room size works when one bedroom is bigger or has its own bathroom.
How do you split rent based on income?
Add up everyone's income, work out each person's percentage of the total, and pay that percentage of the rent. If one person takes home $5,000 a month and the other $3,000, the first pays 62.5% and the second 37.5%. On $2,000 rent that is $1,250 and $750, and rent costs each of them 25% of their pay.
How do you split rent by room size?
This calculator uses one simple rule: 50% of the rent is split evenly for shared space and the rest by bedroom size, with a private bathroom making a room count 15% bigger. With $2,400 rent and bedrooms of 200, 100 and 100 square feet, each person pays $400 of the even half, and the room half splits $600, $300 and $300. That makes $1,000, $700 and $700. You can change the shared-space percent.
How much more should the room with a private bathroom pay?
There is no standard amount. This calculator counts a room with a private bathroom as 15% bigger. In the $2,400 example, if the 200 square foot room has its own bathroom, the split becomes $1,041.86, $679.07 and $679.07.
Should utilities be split the same way as rent?
Many roommates split utilities evenly, because everyone uses about the same heat, power and internet. If you split rent by income, you can choose to split utilities the same way. The calculator lets you pick either.
How do you split rent when a couple shares one room?
One easy way is to enter the couple as two people who each have half of the room's size. They then pay for their room together and each pays a full share of the shared space, which most roommates think is fair.
Is there an app to split rent?
This calculator works in any phone or computer browser with nothing to install, and Copy link sends your roommates the same numbers. To track rent and other shared bills month to month, many roommates use Splitwise. Monio connects to Splitwise and counts only your share of each bill as your spending.
Can I use this with Splitwise?
Yes. Work out each person's share here, then add the rent to Splitwise as one expense. Splitwise lets you split an expense by exact amounts, by percentage or by shares, so you can type in the amounts from this calculator, and its help center says an expense can be set to repeat monthly. Splitwise also has its own rent calculator, which suggests rent per room from room size, closets, bathrooms and more.
Is this rent split calculator free and private?
Yes. It's free and needs no sign-in. The math runs in your browser, and the names and amounts you type never reach Monio. A link you copy carries them, so send it only to people you'd share them with.