Rent Split Calculator
Work out exactly what each roommate owes in seconds.
- 💰 Fair and transparent calculations
- 💰 Fast and easy to use
- 💰 Mobile-friendly design
- 💰 Completely free
Calculate Your Rent Split
Roommates
How to Use the Rent Split Calculator
- Enter total costs: Input your monthly rent and utilities (gas, electric, internet, etc.)
- Choose calculation method: Select how you want to split costs - equally, by room size, income, or custom shares
- Add roommates: Enter each person's details based on your chosen calculation method
- Calculate and review: Hit calculate to see everyone's fair share with a detailed breakdown
- Share results: Print or share the breakdown with your roommates
Example Scenarios
2-Bedroom Equal Rooms
Two roommates with identical bedrooms splitting rent equally.
- Total rent: $2,000
- Utilities: $200
- Each pays: $1,100
3 Roommates, Different Room Sizes
Three people with bedrooms of different sizes (120, 100, 80 sq ft).
- Total rent: $3,000
- Utilities: $300 (split equally)
- Rent split by room size
Couple Sharing One Room
Partners sharing one bedroom counted as 1.5 shares for utilities.
- Total rent: $2,400
- Utilities: $240
- Custom shares: 1.5, 1, 1
How We Calculate Your Split
Room Size-Based Calculation
Formula: Room share = (Room sq ft ÷ Total private sq ft) × (Total rent - Common area value) + (Utilities ÷ Number of people)
Income-Based Calculation
Formula: Person's share = (Person's income ÷ Total household income) × Total housing costs
Custom Shares
Formula: Person's share = (Person's shares ÷ Total shares) × Total housing costs
Transparency: All calculations are performed in your browser. No data is sent to our servers or stored anywhere.
Tips & Best Practices
🏠 Roommate Agreement
Always sign a written roommate agreement outlining rent splits, chores, and house rules. This prevents disputes later.
💰 Security Deposits
Split security deposits proportionally to rent shares. Keep records of who paid what for easier refund distribution.
🚪 Early Move-Outs
Establish rules for when someone moves out early. Who finds the replacement? How much notice is required?
📊 Track Everything
Keep receipts for utilities and shared expenses. Use apps like Splitwise or create a shared spreadsheet.
Frequently Asked Questions
Is it legal to charge different rents for identical leases?
If you're all on the same lease, the landlord typically can't charge different amounts. However, roommates can agree privately to split costs differently based on room size, income, or other factors.
How do I handle short-term guests?
For guests staying more than a week, consider adding a small temporary fee (like 10-15% of one person's utilities). Always discuss guest policies upfront.
What about utilities that fluctuate?
For variable utilities like gas/electric, you can either split them equally each month or calculate an annual average and split that amount monthly.
Does the calculator store my data?
No, absolutely not. All calculations happen in your browser. We don't collect, store, or transmit any of your financial information.
What if someone has a significantly larger income?
Use the income-based calculation method. This ensures housing costs remain affordable for lower earners while being proportionally fair for higher earners.
Should common areas affect the split?
Common areas (kitchen, living room, bathrooms) benefit everyone equally, so their "value" is typically split evenly regardless of bedroom size.
Privacy & Disclaimer
🔒 Your Privacy
All calculations are performed client-side in your browser. No financial data is transmitted to our servers or stored anywhere. Your information stays completely private.
💰 Legal Disclaimer
The figures provided by this calculator are for informational purposes only and do not constitute legal or financial advice. Please consult with legal professionals for binding agreements.
Fair Rent Splits Made Simple
Bookmark this page or share it with your roommates to ensure everyone pays their fair share.