Free gas detour calculator
Is cheaper gas worth the extra drive?
Compare pump savings with the fuel burned by the detour. Add the value of your time only if it matters to this trip.
Compare real stops along my routeHow the calculation works
The pump-price difference equals the closer price minus the farther price, multiplied by the gallons purchased. Detour fuel cost equals extra miles divided by MPG, multiplied by the farther station price.
What the quick check cannot know
The interactive calculator also explains that current station prices, road routing, eligibility and opening hours require a route-specific WorthStop comparison.