Electricity Bill Splitter
Split a shared electricity bill fairly, not just evenly. Choose equal shares, days stayed, room size, or fixed fee plus one heavy user — and everyone sees exactly why they owe what they owe.
How do you want to split it?
Pick the method that matches your household. Switch anytime — nothing is lost.
$180
3 people · Equal split
Who owes what
Everyone pays an equal share of the total bill.
- $60.00
Alex
1 / 3 equal share
- $60.00
Sam
1 / 3 equal share
- $60.00
Jordan
1 / 3 equal share
Four ways to split a shared electricity bill
Equal split
The total is divided equally between everyone in the household. It works best when usage and time spent at home are roughly similar for all housemates.
By days stayed
If someone travelled or moved in or out partway through the billing period, each share is weighted by the days they actually lived there. The tool computes person-days automatically so a half-month tenant only pays for their half.
By room size
Assign each person a weight — square footage, or just a bigger number for a larger room — and the bill is split in proportion. Useful when a master bedroom clearly uses more space and power than a box room.
Fixed + one heavy user
The fixed service charge is split equally. From the usage cost, each person’s own extra usage — a space heater or AC unit running in their room — is billed straight to them first, and only the remainder is shared equally. This is the fix for the most common roommate argument: why should everyone pay for the AC in one person’s room?
Related calculators
Electricity Bill Calculator
Estimate your electricity bill from usage or appliance power — flat or tiered rates.
Appliance Cost Calculator
See what any appliance costs to run per day, month, and year.
Reverse Bill Calculator
Work backwards from a bill amount to estimate how many kWh you used.
Time-of-Use Calculator
Calculate bills with peak, off-peak, and shoulder tariff periods.