Fuel cost calculator · About 160 miles
Gas cost from Miami to Key West
The drive from Miami, FL to Key West, FL is about 160 miles, so a round trip costs about $40.44 in gas at this week's average of $3.79 a gallon. Change the car, fuel or distance below for your own figure.
What the trip costs by vehicle
| Vehicle | One way | Round trip |
|---|---|---|
| Compact car (33 mpg) | $18.38 | $36.76 |
| Midsize sedan (30 mpg) | $20.22 | $40.44 |
| Hybrid (50 mpg) | $12.13 | $24.26 |
| Minivan (22 mpg) | $27.57 | $55.14 |
| SUV (24 mpg) | $25.27 | $50.55 |
| Pickup truck (19 mpg) | $31.92 | $63.85 |
Regular gas at $3.791 a gallon, this week's Florida price, from the EIA’s weekly survey. Fuel only: tolls and parking are not included.
Fuel economy figures are round examples for each kind of vehicle, not official ratings. Your own car's EPA rating is on fueleconomy.gov.
Distance: fastest route between city centres, rounded to the nearest 5 miles, calculated with OSRM on OpenStreetMap road data (© OpenStreetMap contributors), measured November 2026.
160 miles in Florida
$20.22
5.3 gallons at $3.79 a gallon
$1.93 less than the same trip at the national average.
- Per mile
- 12.6¢
- A full tank
- $56.87
- about 450 miles
- A year of driving
- $1,516
- $126 a month
Miami to Key West by car
- How much does gas cost from Miami to Key West?
- About $20.22 one way, or $40.44 for the round trip, in a car that gets 30 mpg. That assumes 160 miles and this week's average regular price of $3.79 a gallon. An SUV at 24 mpg spends about $25.27 one way; a hybrid at 50 mpg about $12.13.
- How far is Miami from Key West by car?
- About 160 miles on the fastest route between the two city centres, measured on OpenStreetMap road data. Your own start and end points may make it a little longer or shorter; type your distance into the calculator for an exact figure.
- How many gallons of gas does the drive take?
- About 5.3 gallons one way at 30 mpg. That fits in a typical 15-gallon tank, so most cars can make it without stopping for fuel.