Free Rent Split Calculator — Split Rent Fairly with Roommates
Divide rent, utilities, and household bills instantly. Handles equal splits, unequal room sizes, and monthly recurring expenses — no signup, no app, 100% free.
Open Rent Calculator FreeA rent split calculator divides monthly rent fairly between roommates based on their agreed method — equal shares, room size, or a custom percentage. Spllito's free calculator also tracks utilities, internet, groceries, and other household bills so you always know who owes what at the end of the month.
3 Ways to Split Rent Fairly
There's no single "right" way to split rent — the fairest method depends on your apartment setup and roommates. Here are the three most common approaches:
Equal Split
Divide the total rent equally between all roommates. Simple, transparent, and works well when rooms are similar in size. Best for 2-person apartments with comparable rooms.
Example: $2,400 ÷ 3 people = $800 each
Room-Size Split
Each person pays a percentage proportional to their room's square footage. Fairer when room sizes differ significantly — the person with the larger room pays more.
Example: 60% / 40% split based on room sq ft
Negotiated Split
Agree on a custom percentage based on amenities — who has an en-suite bathroom, a balcony, better natural light, or larger closet space.
Example: 55% / 45% based on en-suite bathroom
Example: How to Split Rent + Utilities with 3 Roommates
Here's a real example of monthly shared expenses for a 3-person apartment, tracked in Spllito:
| Expense | Amount | Split Method | Per Person |
|---|---|---|---|
| Rent | $2,400 | By room size (50/30/20) | $1,200 / $720 / $480 |
| Electricity | $120 | Equal | $40 each |
| Internet | $60 | Equal | $20 each |
| Water | $45 | Equal | $15 each |
| Total Monthly | $2,625 | — | $1,275 / $795 / $555 |
Add all of these as separate expenses in Spllito and it calculates the exact optimal payment — who pays whom and how much — in seconds.
Calculate Your Rent Split FreeHow to Calculate Rent Split by Room Size
1. Measure each bedroom's square footage. 2. Add them together for the total. 3. Divide each room by the total to get that person's percentage. 4. Multiply the percentage by total rent. Example: Room A = 180 sq ft, Room B = 120 sq ft. Total = 300 sq ft. Room A pays 60% of rent, Room B pays 40%.
Rent Split Calculator — FAQ
How do I split rent fairly with roommates?
Open Spllito, add all roommates' names, then add rent as one expense and each utility bill as separate expenses. Choose who paid each bill, and Spllito calculates the optimal monthly settlement — who pays whom and the exact amount.
How do I split rent for unequal room sizes?
Calculate each room's percentage of the total living space. Then in Spllito, add rent as an expense and note which person paid it. For tracking purposes, you can add each person's share as separate expenses — Spllito will still calculate the net settlement correctly.
Should I split utilities equally or by usage?
Internet and water are almost always split equally. For electricity, equal splitting works well unless one person works from home and uses considerably more power — in which case a 60/40 or custom split is fairer. Track both in Spllito to stay organized month to month.
Is there a free rent split calculator?
Yes — Spllito is completely free with no account, no app download, and no limits. You can track rent, utilities, groceries, and any other shared expenses for as many roommates as you need.
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