Fair Roommate Expense Splitter

How to calculate a weighted roommate split?

Weighted splits ensure fairness by accounting for space value and resource consumption, moving beyond a simple equal division to reflect the actual utility each person receives from the living arrangement.

Formula: Rent Share = (Individual Room SqFt / Total Room SqFt) * Total Rent

Using the expense splitter: an example

For a $2,000 apartment where Room A is 200 sq ft and Room B is 100 sq ft.

Step-by-step calculation:

• Sum the total square footage of all bedrooms
• Calculate the percentage share for each room
• Apply the percentage to the total rent and utility totals

Frequently Asked Questions

Should we include common areas in the square footage?

Usually, common areas are shared equally, so only private bedroom square footage is used for the weighted ratio.

How do we measure usage level?

Usage level is a subjective score (1-10) agreed upon by roommates based on factors like working from home or heavy appliance use.

What if one roommate has a private bathroom?

You can add a premium to their square footage or a flat fee before calculating the weighted split.