How many gallons do you need from DC to TX?

Answer 1

Texas is pretty big - where in Texas are you headed? And what are you driving - it'll depend on your gas mileage. If you use Google Maps, the center of DC to the center of Texas is roughly 1600 miles. You might want to look this up with more specific locations.

You need to know the distance (we'll assume 1600) and the gas mileage your car gets (we'll assume 25 mpg's for this). You'll also want to build in a buffer since cars get different mileage depending on traffic conditions and you may hit a variety of situations on the way there.

When you have the info to plug in, the calculation is DISTANCE / MPG. In the above example, 1600/25 is 64, you'd need roughly 64 gallons.