Fair rent split calculator
Split rent by room quality, income, custom percentages, or equally — with transparent math you can show anyone. No signup needed.
- No signup
- Private income
- Shareable agreement
How do you want to split it?
Most shared rentals start with room — but income, custom %, or equal work too.
Kitchen, living room, pool… — paid for by everyone, so it's split equally.
By room · weighted by size & amenities, shared space split equally
Save bills, invite housemates, and reuse this split each month.
Create a free account — email link, password, or Google — and we'll bring this split with you.
How this was calculated
- Bedroom 1: weight 1.38
- Bedroom 2: weight 0.80
- Room weights come from size and amenities; you can adjust them.
- Part of the rent covers shared space (kitchen, living, etc.) and is split equally; the rest is split by room.
- Amounts are rounded to the nearest cent so the total stays exact.
No signup needed. Nothing is stored until you choose to share.
How the rent split is calculated
RoomRatio supports four methods. Each makes a different assumption about what makes a split fair — you choose the basis, the calculator shows the formula and the rounding.
Each participant's share is proportional to the points assigned to their room — area, light, en-suite, and other amenities. Points are yours to set.
rent × room_points ÷ total_pointsEach participant's share is proportional to their income. Raw income never appears in a share link — the calculator keeps it client-side only.
rent × income ÷ total_incomeEnter any percentages that add to 100. Useful when the household has already agreed on a split and just wants to confirm the amounts.
rent × agreed_percent ÷ 100All participants pay the same share. One penny of remainder goes to the first participant when the rent does not divide evenly.
rent ÷ number_of_participantsWorked example — split by room quality
Two roommates share a $2 000/month apartment. Alex has the larger room (12 points), Sam has the smaller one (8 points).