Choose the fuel stop that is actually cheaper.
Compare realistic stops using the price your payment method can actually get, the gallons already planned, any separate transaction fee, and the extra miles required to reach the pump.
A cheaper gallon is only cheaper after the miles needed to reach it.
Enter only the facts that change today’s stop choice.
Use the current net price available to your account and payment method. Enter a separate transaction fee explicitly instead of hiding it inside a headline discount.
The buying result appears here after gallons, MPG, and complete price, fee, and added-mile facts for at least two stops are entered.
Fuel Stop Comparison Result
The sign gets a vote. The price your account can buy gets the number.
This page uses direct arithmetic from entered facts. It does not import a national average, guess a discount, or convert an unknown fee into zero.
- Pump cost
- Planned gallons × entered net price.
- Added-mile fuel cost
- Added round-trip miles ÷ observed MPG × that stop’s entered net price.
- Modeled all-in cost
- Pump cost + added-mile fuel cost + entered transaction fee.
- Effective price
- Modeled all-in cost ÷ planned gallons.
- Break-even against Stop 1
- The highest candidate price that would match Stop 1 after the candidate’s entered added miles and fee.
- Evidence boundary
- The added-mile fuel value is a replacement-cost assumption using that stop’s price. Route, time, access, and the final receipt remain separate facts.
Method reviewed September 6, 2026. Weekly EIA averages are market context on Fuel Desk Page 1. They do not establish the price available to a particular card, account, or stop and are never inserted into this calculator.
Three Guides support this buying decision.
The Guides explain price evidence, detour economics, and the break-even threshold. This tool performs the entered-stop arithmetic.
Posted Price, Cash Price, Card Price, or Net Price?
Identify the price the selected payment method can actually buy before comparing stops.
Detour Economics: When Cheaper Diesel Costs More
Trace how added miles can reverse an apparent pump-price advantage.
How Much Cheaper Must Fuel Be Before the Detour Pays?
Use the break-even price to see how far the candidate price must fall.
Keep today’s stop choice separate from the longer-term card setup.
If the question is whether the card or payment setup creates usable value across the operation, compare that written setup on its own page.
Fuel Card Comparison + Provider Fit
Compare usable card economics and written provider terms without changing today’s stop result.
Educational decision support only. Verify the live account-specific price, separate transaction fee, route access, fuel availability, parking, remaining driving time, and operating conditions before changing a stop plan. This tool does not choose gallons, estimate IFTA, rank providers, or establish the final receipt price.