Gas cost calculator: How much have higher gas prices cost you?

Data GraphicsGas cost calculator: How much more have you paid at the pump since February?Added gas expenses have cost Americans more than $30 billion, according to one analysis.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 ImagesShareAdd NBC News to GoogleJune 20, 2026, 5:00 AM EDTBy Ashley MowreaderAfter nearly four months of war, does your wallet feel lighter? Subscribe to read this story ad-free Get unlimited access to ad-free articles and exclusive content.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. Since Feb. 28, when the U.S. first struck Iran, average gas prices nationally have risen 34%. A recent peace deal announcement and subsequent memorandum of understanding have indicated the war could finally be close to the finish line. Gas prices hit the 10th-highest weekly rate in the past 10 years the week of May 11, at an average of $4.63 per gallon nationally, according to data from the U.S. Energy Information Administration. The average gas price last to...