How Tank Range Calculator Works?
This tool works by multiplying tank capacity by your average miles per gallon (MPG). The result is the distance a full tank covers.
Enter tank capacity
Type the tank size in gallons. The default is 14.5 gallons (54.9 L).
Enter average MPG
Type the MPG you get in normal driving. Highway MPG gives a longer range.
Read the full-tank range
The tool returns miles per tank.
Plan with a buffer
Subtract 10% to 15% for the reserve you keep before refueling.
Tank Range Calculator Formula
The formula is Range = Tank Capacity × MPG.
Range = Tank Capacity × MPGFormula variables
- Tank Capacity
- Full tank size in US gallons (3.785 L each).
- MPG
- Average miles per gallon.
Worked example
- Tank Capacity: 14.5 gallons
- Average MPG: 32 MPG
- Multiply 14.5 gallons by 32 MPG: 14.5 × 32 = 464.0 miles (746.7 km).
Result: 464.0 (miles)
Real range runs 5% to 10% below the result, since the usable tank volume sits slightly under the rated capacity and MPG shifts with conditions.
Tank Range Calculator Conversion Table
The table lists full-tank range for 5 tank sizes at 4 MPG ratings.
Rows: Tank Capacity (gallons). Columns: Average MPG (MPG). Cells: miles.
| gallons | 18 MPG | 25 MPG | 32 MPG | 45 MPG |
|---|---|---|---|---|
| 10 gallons | 180.0 | 250.0 | 320.0 | 450.0 |
| 12 gallons | 216.0 | 300.0 | 384.0 | 540.0 |
| 14.5 gallons | 261.0 | 362.5 | 464.0 | 652.5 |
| 18 gallons | 324.0 | 450.0 | 576.0 | 810.0 |
| 24 gallons | 432.0 | 600.0 | 768.0 | 1,080 |
A 24-gallon (90.8 L) SUV tank at 18 MPG covers 432 miles, less than a 10-gallon hybrid tank at 45 MPG, which covers 450 miles.
What is Tank Range Calculator?
The Tank Range Calculator is a tool that estimates how far a vehicle travels on 1 full tank. Range sets the spacing of fuel stops on long trips.
Range depends on 2 factors: tank size and fuel economy. A large tank in a thirsty truck often covers less distance than a small tank in an efficient hybrid.
The tool returns range in miles. Multiply by 1.609 for kilometers.
What are the uses of Tank Range Calculator?
There are 4 main uses of the Tank Range Calculator: planning fuel stops, comparing vehicle range, checking remote-area travel, and choosing a long-distance vehicle.
Planning fuel stops
Road trippers space stops inside the full-tank range.
Comparing vehicle range
Buyers compare range between models with different tanks.
Checking remote-area travel
Drivers in deserts and rural areas confirm range covers gaps between stations.
Choosing a long-distance vehicle
Commuters with long drives pick a vehicle that refuels once per week.
Need every metric in one place? Open the main MPG Cost Calculator or browse all 101 fuel calculators.