Electricity Bill Splitter — Split Power Bills Fairly by Usage
Split the electricity bill by equal shares, room size, or actual usage — including AC season, working from home, and EV charging. Free, private, no signup.
Open Free CalculatorSplit equally when everyone's schedule and appliance use are similar. Weight the split when they aren't — one roommate working from home all day, running a portable AC, or charging an EV can easily drive a third of the bill. Because heating and cooling are the biggest single driver of most power bills, start the fairness conversation there, and use a simple weighting like 60/40 instead of chasing exact kilowatt-hours.
How to Use the Electricity Bill Splitter
Here's exactly how it works — usually under a minute from open to settled.
Add everyone on the meter
List each roommate sharing the electricity account — no limit on group size.
Enter the bill total
Type the amount from your electricity statement, in any currency.
Weight the shares
Equal, by room size, or nudge heavy users up — 60/40 when someone runs AC or charges an EV.
Settle up
Spllito shows exactly who owes whom — with the fewest transactions.
Tips for Splitting Electricity Fairly
Agree on the rule before the spike
Summer AC and winter heating can double a bill. Decide the split rule in a calm month, not after the first $300 statement.
Photograph the meter on move-in day
A dated meter photo makes mid-cycle move-ins and move-outs trivial to prorate — no estimating, no arguing.
Name the big loads out loud
A space heater running nightly or a portable AC adds real money. Agree on a small surcharge for the owner up front instead of resenting it later.
Ask your utility about budget billing
Many providers offer level-pay plans that average the year into equal monthly amounts — a flat bill is far easier to split consistently.
Equal split vs. usage-based split — which is fair?
Equal splits work when everyone is home about the same amount with similar appliances. Usage-weighted splits are fairer when there's a real asymmetry — one roommate home all day, gaming rigs, portable AC, or EV charging. You rarely need precision: a simple 60/40 or 55/45 weighting settles most disputes, and Spllito applies it without a spreadsheet.
Frequently Asked Questions
How do you split an electricity bill between 3 roommates?
Equal thirds is the default when schedules and appliance use are similar. Enter the bill total in Spllito, add three names, and it computes each share plus the simplest way to settle. If one person uses noticeably more power, weight their share up before splitting.
What uses the most electricity in a shared apartment?
Heating and cooling dominate — typically around half of a household's electricity use. Water heating, laundry, and refrigeration come next. Lights and phone chargers are nearly negligible, so they're rarely worth arguing over.
How should we split electricity when one roommate works from home?
Working from home adds daytime heating, cooling, and device use the others don't cause. A common compromise is shifting 5–15% of the bill toward the work-from-home roommate rather than trying to meter usage precisely.
How do we handle EV charging on a shared meter?
Home EV charging can add several hundred kWh a month, which shouldn't be split evenly. Estimate the cost from the car's efficiency and miles driven, have the owner cover that amount, then split the rest of the bill normally.
How do we prorate electricity when someone moves out mid-month?
Multiply the bill by days lived there ÷ days in the billing cycle to get the departing person's share, then split the remainder among everyone else. A dated meter photo on move-out day removes the guesswork.
Should we use smart plugs to split by exact kWh?
You can meter individual devices with cheap smart plugs, but chasing every kWh usually costs more goodwill than it saves. Reserve metering for genuinely large loads like portable AC units, space heaters, or high-end gaming rigs.
Whose name should the electricity account be in?
The account holder is legally responsible for the whole bill, so rotate the role between leases or pair it with control of a shared reimbursement pot. Either way, keep payment confirmations in a folder everyone can see.
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