Example 1
Family of three in main bedroom · full period
Bill 350 over 30 days. Main bedroom: two adults and one child under 1.2 m. Second bedroom: one adult. All stay the full period.
Results：Family in main bedroom $250 · Second bedroom $100
Shared utilities split calculator
Quick explanationUse one group per room. Enter adults, children and days lived; leave days blank for the full period. Each group’s share is calculated automatically.
Current bill
Count the move-in day but not the move-out day. Moving in on November 1 and out on November 13 counts as 12 days.
Split baseline costs by people and days. Allocate extra heating costs only to heater users, based on hours per day and days used.
Occupant groupsOne group per room
See 3 examples
Example 2
Second bedroom occupied for 10 days
Bill 300 over 30 days. Main bedroom: two adults all month. Second bedroom: one adult for 10 days.
Results：Main bedroom $257.15 · Second bedroom $42.85，Total matches $300
Example 3
Two people · one stays a week less
Bill 240 over 30 days. Alex stays 30 days, Sam 23 days; one person per group.
Results：Alex $135.85 · Taylor $104.15
Frequently asked questions
How do I split utilities for different stays?
Enter actual occupancy days for shorter stays. Allocate costs by people times days. Count move-in but not move-out day. Agree separately on vacant-room costs.
What if I leave occupancy days blank?
Blank occupancy days mean the full period; a blank period defaults to 30 days. Equal stays split by occupancy. Days lived cannot exceed the billing period.
How do I enter several people in one room?
Use one group per room and enter its adults and children. Results show the room’s total; agree on any split within the group separately.
How are children counted?
Children under 1.2 m count as half an adult in this model. Use the child control; each group needs at least one occupant. Agree on a suitable rule together.
How many groups can I use?
Use 2–6 groups. Add a group with the button, or remove one using its delete control.
Can I split gas and internet bills?
Yes. Enter any total shared bill for the period. Agree separately on gas if only some people cook.
What about heavy air-conditioning use?
Meter unusually heavy air-conditioning use separately or agree on an extra contribution. Use this calculator for the remaining bill.
How are rounding remainders handled?
Amounts are rounded to cents. The largest group receives any rounding remainder so the total matches the bill. Approximate values use ≈.
Web app
Shared Expense Ledger
How can we manage shared costs each month?
For two roommates or a couple, Shared Expense Ledger keeps mutually confirmed expenses and calculates the settlement balance.
✓✓ Both people approve🔒 Original records stay intact⚡ Settle the balance