What's the fairest way to split rent?

The fairest method depends on your situation. Equal split works when all rooms are similar. Income-based is ideal when roommates earn significantly different amounts. Room size-based is best when bedroom sizes vary substantially.

Should utilities be split equally?

Utilities are typically split equally since everyone uses similar amounts. However, if one roommate has significantly higher usage (like running a home business), you might consider adjusting their share.

How do I calculate rent by room size?

Measure each bedroom's square footage. The calculator divides the total rent proportionally based on each room's percentage of the total square footage. Larger rooms pay more, smaller rooms pay less.

What if roommates have different bathroom access?

If one roommate has a private bathroom (en-suite), you can account for this amenity in two ways: add 20-30 square feet to their room size when using the room size method, or increase their rent share by 10-15%. Both approaches fairly reflect the added value of private bathroom access.

Can I save and share my calculation?

Yes! Use the 'Export as Text' button to download your calculation, or the 'Share' button to copy a summary to your clipboard that you can send to roommates.

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RentAffordability

groups Fair Rent Splitting

Roommate Rent Split Calculator

Calculate fair rent splits between roommates based on equal division, income proportions, or room sizes. Avoid conflicts with transparent, data-driven calculations.

How to Split Rent Fairly: A Complete Guide

Dividing rent fairly among roommates is one of the most important financial decisions when sharing an apartment. Our free roommate rent split calculator helps you avoid conflicts by providing transparent, data-driven calculations that account for income differences, room sizes, and shared expenses.

Whether you're using the equal split method for similar-sized rooms, income-based division for roommates with different earning levels, or square footage calculations for varying bedroom sizes, this tool ensures everyone pays their fair share. Updated January 2026.

Calculate Your Split

Number of Roommates

Total Monthly Rent ($)

Splitting Method

Include Utilities

Split Results

Roommate	Details	Rent Share	Utilities	Total

Grand Total: $0.00

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Quick Tips

• Equal split works best when all rooms are similar in size
• Income-based splitting ensures everyone pays proportionally to their earnings
• Room size splitting is fairest when bedroom sizes vary significantly
• Don't forget to include utilities in your total housing costs

How It Works

Select a splitting method above to see how the calculation works.

Frequently Asked Questions

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