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Energy-Shock Calculator: What Higher Gas, Power and Airfare Prices Cost Your Household

Gas, heating oil and airfares jumped over the past year; electricity and piped gas rose more slowly. Enter how you drive, heat and travel to see what that adds up to for your household, what it does to your monthly budget, and which moves pay for themselves.

✍️ Built by DigitalWealthSource

🔍 Reviewed by Derek Giordano

📅 Updated Sep 28, 2026

🔒 Runs in your browser

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Driving

Miles you drive a week

Your car’s miles per gallon

Gas price where you live ($ a gallon)The default is the U.S. average for regular, week of Sep 21, 2026 (EIA)

Home energy and travel

Electricity bill ($ a month)

Natural gas bill ($ a month)

Heating oil ($ a month, averaged over the year)

Round-trip flights a year

Typical round-trip fare ($)

Moves to test

Miles you could cut a week

A more efficient car’s mpg

What that car costs you extra ($)Price difference or cost to switch; no tax credit assumed

A home efficiency project ($)

Share of your energy bills it saves (%)Setting the thermostat back can save up to 10% of heating and cooling (Energy Department)

Extra cost vs a year ago

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Monthly budget hit

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Energy spending now

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Cost	Now, a year	A year ago	Change	CPI, 12 months

What each move saves

Move	Saves a year	Costs	Pays back

Bills are your own; last year’s costs are backed out with the CPI. Nothing you type leaves your browser.

How the Calculator Works

Gasoline: miles a week × 52 ÷ mpg gives gallons a year; gallons × your price is this year’s cost.
Bills and flights: your monthly bills × 12, and flights × fare.
A year ago: each cost ÷ (1 + that category’s 12-month CPI change): what the same gallons, kilowatt-hours and trips cost last year.
Payback: a move’s cost ÷ what it saves a year at today’s prices. Driving less costs nothing, so it pays back right away.

The price changes come from our figures registry and update on each CPI release day. The gas price is yours to enter, because it varies by state and station.

Reading the Result

For most drivers, gasoline is the biggest line, and miles driven matter more than anything else you control. Homes that heat with oil feel the sharpest increase. The monthly budget hit is the number to plan around: give fuel and utilities their own budget line while prices stay high. Our energy-shock budget guide covers the moves that help most, and the personal inflation calculator puts energy next to everything else you spend.

What the Calculator Leaves Out

Regional and seasonal swings. National CPI changes stand in for your area, and heating bills are averaged over the year.
Other car costs. Maintenance, insurance and financing for a new car aren’t included, and neither is charging cost for an electric car.
Where prices go next. It measures the past 12 months, not a forecast.
Propane and wood, which follow their own prices.

Frequently Asked Questions

How much more am I paying for gas than last year?

Divide your yearly miles by your car’s miles per gallon to get gallons, multiply by today’s price, and compare with the same gallons at last year’s price. The calculator works out last year’s price from the latest 12-month change in the CPI gasoline index, so the answer is your own driving at this year’s and last year’s prices.

Why use the CPI instead of last year’s pump price?

The CPI is the official monthly measure of what households pay, and the same source covers electricity, piped gas, heating oil and airfares, so every line uses one consistent yardstick. Weekly pump prices move faster; enter your local price, and the calculator pairs it with the CPI’s 12-month change.

Does a more fuel-efficient car pay for itself?

Divide the extra price you would pay for the better car by what it saves in fuel each year. At $4.48 gas and 13,000 miles a year, going from 25 to 35 mpg saves about $666 a year, so a $5,000 premium takes about 7.5 years to pay back. The calculator assumes no federal tax credit for the new car.

Which home energy moves pay back fastest?

The free ones: the Energy Department says setting the thermostat back 7 to 10 degrees for eight hours a day can save up to 10% a year on heating and cooling. After that, cheap sealing and insulation jobs usually beat big purchases. Enter any project’s cost and the share of your bills it saves to see its payback.

Is airfare part of the energy shock?

Yes. Jet fuel is a large share of an airline’s costs, and airfares tend to follow it. The calculator applies the latest 12-month change in the CPI airline fares index to the trips you plan.

Sources: BLS CPI release · EIA weekly regular gasoline price (FRED) · Energy Saver: thermostats. Checked Sep 28, 2026.

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