Roommate Bill Split — The Fair-Way Calculator

How to use

1. Open this page on any device — no signup needed.
2. Fill in the fields above.
3. Get your result instantly — nothing is uploaded.

About this tool

Flat-sharing math goes wrong on details: the master bedroom premium (typically 10–20% more), who has the en-suite, and bills in whose name. This calculator splits rent equally or by room weights, adds utilities and shared subscriptions, and outputs a per-person breakdown you can paste into the group chat — transparency prevents 90% of roommate fights.

FAQ

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