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Bill calculators that actually answer the question
Work out what your electricity, water, gas or propane bill should be — and split a restaurant bill so the tax and tip land on whoever ordered the expensive thing. Every calculation runs in your browser. We take no money from energy suppliers, so the number you get is the number.
The calculators
The calculators
Sixteen tools, no sign-up, no upsell
Each one shows its working and cites where its default numbers come from. None of them asks for your email or connects to your bank.
Electricity Bill Calculator
Estimate your whole monthly electric bill from your usage and your state's rate.
kWh Cost Calculator
Turn a rate in cents per kilowatt-hour into a cost per hour, day, month and year.
Appliance Energy Cost Calculator
Work out what any single appliance costs to run, from its wattage and runtime.
Water & Sewer Bill Calculator
Estimate a water and sewer bill from tiered rates, in gallons or CCF.
Natural Gas & Propane Calculator
Estimate a gas bill in therms or CCF, or price a propane fill by the gallon.
Split Bill Calculator
Split an itemised bill with tax and tip apportioned to what each person actually ordered.
Water Leak Calculator
Two meter readings two hours apart tell you whether you have a leak, and what it is costing.
Electric Bill Increase Calculator
Compare two bills and see how much of the rise was the rate, the usage, and the length of the billing period.
Budget Billing Calculator
Work out what a levelized payment would be, and whether smoothing your bill is worth it.
Utility Split Calculator
Split a utility bill between roommates by days present, by room, or evenly.
Tiered Electric Rate Calculator
Work out a bill on a tiered or baseline rate, and see the marginal price of the next kilowatt-hour.
Time-of-Use Rate Calculator
Price your usage across peak and off-peak windows, and see whether a time-of-use plan would actually beat a flat rate.
Invoice Late Fee Calculator
Interest and late fees on an overdue invoice, with each state's statutory rate and what the law actually permits.
Invoice Due Date Calculator
Net 15, 30, 45 or 60 — the exact due date, in calendar or business days, and how overdue an invoice already is.
Rent Late Fee Calculator
What a landlord may charge for late rent in your state, including grace periods and statutory caps.
Negotiation Fee Break-Even Calculator
What a bill negotiation service actually costs you, and how much you must save before it is worth using.
Average bills
What people actually pay, state by state
Residential electricity rates and average monthly bills for all 50 states and the District of Columbia, from the U.S. Energy Information Administration. The national average is $159.14 a month at 18.44¢ per kWh on 863 kWh of use.
Average Electric Bill in Texas
Texas households average $180.18 a month at 16.44 cents per kWh across 1,096 kWh — and in most of the state, the rate you pay is the one you agreed to.
Average Electric Bill in California
California averages $167.25 a month at 33.25 cents per kWh — the country's most extreme combination of very high prices and very low household consumption.
Average Electric Bill in New York
New York averages $170.90 a month at 29.93 cents per kWh — the country's second-highest rate applied to some of its lowest household usage.
Average Electric Bill in Florida
Florida averages 15.17 cents per kWh, below the national rate, but 1,104 kWh a month of usage pushes the typical bill to about $167.48.
Average Electric Bill in Ohio
Ohio averages $165.14 a month at 19.52 cents per kWh — close to the national figure on rate, usage and bill alike.
Average Electric Bill in Hawaii
Hawaii averages 52 cents per kWh, the highest in the nation, and about $257.40 a month even though households use less electricity than anywhere else.
Two very different markets
Whether you can shop for electricity changes everything
In fourteen jurisdictions you choose who supplies your electricity and the utility only delivers it. In the other thirty-seven the utility does both and the rate is set by a regulator. The advice that helps you in one is useless in the other.
Deregulated electricity states
You pick a supplier. That means real savings are available — and so are teaser rates, minimum-usage fees and contracts that roll onto a variable rate the month after the promotion ends.
Regulated electricity states
One utility, one rate, set in a public rate case. You cannot shop, but you can move usage, change rate plan, and read the tariff that decides what you pay.
Appliances
What is actually running up the bill
Thirty-two appliances with honest runtime figures. A refrigerator is plugged in twenty-four hours a day but its compressor runs about eight — most calculators get that wrong and overstate the cost threefold.
How Much Electricity Does a Central Air Conditioner Use?
3,500 watts typical, about 638.4 kWh a month.
How Much Electricity Does a Electric Furnace / Heat Pump Use?
5,000 watts typical, about 532.0 kWh a month.
How Much Electricity Does a Electric Water Heater (Tank) Use?
4,500 watts typical, about 232.6 kWh a month.
Browse by region
Regional averages hide enormous variation, but they explain most of it: climate sets consumption, and the age of the delivery network sets the rate.
Northeast
9 states · avg $166/moThe nine states from Maine to Pennsylvania. Old housing stock, expensive delivery infrastructure, and the highest concentration of deregulated residential supply markets in the country.
Midwest
12 states · avg $141/moTwelve states across the Great Lakes and Plains. Cold winters push heating load onto gas more often than electricity, which keeps average electric bills below the national figure in most of them.
South
17 states · avg $171/moSixteen states plus the District of Columbia. Long cooling seasons and widespread electric heating produce the highest average consumption in the country, even where the rate per kilowatt-hour is low.
West
13 states · avg $141/moThirteen states from the Rockies to Hawaii. The widest spread of any region — mild coastal climates with low consumption alongside the highest rates in the nation.
Work out your own bill in about thirty seconds
No account, no email, no bank connection. Every calculation runs in your browser and nothing you type is sent anywhere.