Split electricity, water, gas, internet, and other utility bills fairly between roommates. Compare equal, days-based, and extra-use costs with a fairness score and payment recommendation.
Enter the main utility categories, number of residents, and any extra personal usage. The calculator estimates each person’s base share and shows whether the split is balanced enough for a shared household.
Use extra personal usage for private heaters, gaming rigs, air conditioners, or appliances used mostly by one person.
The main result shows the estimated payment for one resident under an equal split plus any extra personal usage. The score reflects how clean and low-conflict the split is likely to be.
For move-in or move-out months, use a days-based adjustment outside the equal split if one roommate stayed for only part of the billing cycle.
If electricity is $160, other utilities are $160, four residents share the home, and one person has $0 extra use, each person pays $80.
Roommates usually split fixed utilities equally and variable utilities by usage, room occupancy, or days stayed. A written rule prevents disputes.
Internet is normally split equally because it is a fixed monthly bill unless one roommate pays for a private upgrade.
Use a prorated method based on the number of days each person lived in the property during the billing cycle.
It can be more accurate when one person uses high-energy appliances, but it requires a clear way to estimate or measure usage.
The total depends on location and season, but this calculator divides the actual bill total by four and adjusts for extra personal usage.
| Module | Purpose |
|---|---|
| Split method | Equal split with optional extra usage |
| Best for | Roommates, shared apartments, student housing |
| Risk indicator | Higher extra-use charges lower fairness |