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Calculators / Everyday / Two-person rent split by area
Two-person rent split by area calculator
Split rent between two people using private floor areas and equal use of shared space.
On this page
Person A monthly share1,320
Person B monthly share1,080
Person A allocation55%
Calculator controls
How to calculate
Split rent between two people using private floor areas and equal use of shared space.
Person A monthly share =
rent*(a+shared/2)/(a+b+shared)Person B monthly share =
rent*(b+shared/2)/(a+b+shared)Person A allocation =
(a+shared/2)/(a+b+shared)*100 %Worked example
- Total monthly rent: 2400
- Person A private area (m²): 18
- Person B private area (m²): 12
- Shared area (m²): 30
- Person A monthly share: 1,320
- Person B monthly share: 1,080
- Person A allocation: 55 %
Assumptions and limits
This is one voluntary allocation model, not a fairness or legal ruling. It excludes room quality, amenities, occupancy differences, utilities and rooms not entered.
Results are rounded for display; calculations use unrounded values. Read our calculation methodology.
Understanding the result
Split rent between two people using private floor areas and equal use of shared space. Each person receives half the shared area plus their private area. The two payments add back to the total rent before display rounding.
When this tool is useful
Each person receives half the shared area plus their private area. The two payments add back to the total rent before display rounding.
Understanding your inputs
| Input | Example |
|---|---|
Total monthly rent rent | 2400 |
Person A private area (m²) a | 18 |
Person B private area (m²) b | 12 |
Shared area (m²) shared | 30 |
Frequently asked questions
What assumptions should I check?
This is one voluntary allocation model, not a fairness or legal ruling. It excludes room quality, amenities, occupancy differences, utilities and rooms not entered.
How can I check the result?
Start with the labelled example. Keep units consistent, calculate without intermediate rounding and change one input at a time. The diagram explains the model; the result table supplies the numerical answer.