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Jun 24, 2026

Gas cost calculator: Find out how much gas price increases have cost you since the start of the war

A sign displays fuel prices at a Mobil gas station
A sign displays fuel prices at a Mobil gas station in San Diego on May 4. California gas prices are the highest in the U.S., but they have increased less since the war in Iran began than in most states.Ariana Drehsler / Bloomberg via Getty Images
June 20, 2026, 5:00 AM EDT / Updated June 23, 2026, 7:38 AM EDTBy Ashley Mowreader

After nearly four months of war, does your wallet feel lighter?

Since the war started, Americans have spent an additional $33 billion on gasoline, according to a Brown University estimate. Increased gas prices have resulted in higher monthly expenses for individuals — anywhere from less than $20 to more than $300 for a driver who fills up twice a month, according to an NBC News analysis of AAA’s average national gas price data.

Just how much has the spike in gas prices bitten into your budget? Use our calculator to estimate your additional expenses at the pump since the start of the war in Iran. The calculator updates with the latest data daily.

The cost model used in the calculator takes a sample of the average daily gas price in the U.S. since the start of the war, simulating how gas prices vary depending on which day you fuel up. The results you get will fall in a range of average costs and change slightly as you use the tool.

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