US fuel prices
Each state shaded by its latest gasoline price. Hover a state for gasoline, diesel and annual figures.
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Convert a fuel price
Pick a state to load its latest EIA price, then read it per litre or in your currency. Edit the price to convert any what-if figure.
Source · EIA$3.60/gal · Gasoline · PADD regional avg · weekly · 2026-07-20
| Converted | per litre | per gallon |
|---|---|---|
| US dollars | $0.952/L | $3.60/gal |
Conversions are RoadRange's, not EIA figures. Volume: 1 US gallon = 3.785411784 L. Currency: European Central Bank euro reference rates (reference date 2026-06-15) via the Frankfurter API — indicative daily rates, not transaction rates.
Source data: retail fuel prices from the U.S. Energy Information Administration (EIA), eia.gov/opendata — weekly prices from petroleum/pri/gnd (USD/gal), annual figures from SEDS (USD/MMBtu). EIA data are in the public domain; API terms & documentation.
RoadRange interpretation: the per-litre figure and any non-USD amount are converted by RoadRange — not EIA numbers. Volume uses 1 US gallon = 3.785411784 L; currency uses the European Central Bank's euro reference rates (reference date 2026-06-15), served via the open-source Frankfurter API. ECB reference rates are indicative daily figures, not transaction rates. See data sources.
Cheapest and priciest states
Extremes of the latest weekly regular-gasoline figures across states, from the U.S. Energy Information Administration. For the official US national average (volume-weighted, not a simple mean of states), see the EIA Gasoline and Diesel Fuel Update.
How US fuel prices work
Fuel in the United States is priced in US dollars per US gallon (3.785 litres), and what you pay swings widely by state — mostly down to fuel taxes and how far the fuel has to travel from a refinery. Pumps offer regular (87 octane), mid-grade and premium; a regular fill is right for almost every rental car. Diesel is sold from separate pumps at a separate price.
The map shades each state by its latest gasoline price and the figures come straight from the U.S. Energy Information Administration. For the practical side of actually filling up — prepay rules, self- vs full-service states, and why a foreign card can be declined at the pump — see the guide to refueling a car in the USA.
Frequently asked questions
- Why do gas prices differ so much between states?
- Two big reasons: taxes and supply. Combined federal + state fuel taxes range from around 40¢ to over 80¢ a gallon depending on the state, and states far from refineries or on special clean-fuel blends (California, for one) pay more to get fuel to the pump. Local competition and seasonal blend changes move the number too.
- Are these prices per gallon or per litre?
- The source figures are US dollars per US gallon (one US gallon is 3.785 litres), which is how fuel is sold and priced across the United States. The converter on this page can restate any state's price per litre or in another currency, but those are RoadRange conversions — the pump and the EIA both work in dollars per gallon.
- How current are these numbers?
- The gasoline and diesel figures come from the U.S. Energy Information Administration's weekly retail price survey, refreshed as EIA publishes. A handful of states show a regional (PADD) average or an older annual figure where EIA doesn't publish a weekly state number — the map labels which is which on hover.
- Is the cheapest gas always the best deal on a road trip?
- Not always. Driving well out of your way to save a few cents a gallon rarely pays for the extra miles, and warehouse clubs like Costco are often cheaper than the posted average but need a membership. Use the state map to spot big regional differences before a long leg, then fill up where it's convenient.