Calculating your driving range is straightforward once you know the Fuel Tank Range formula and what each input means. This guide explains the method in plain language, walks through a manual calculation, and gives worked examples you can follow — then you can do it instantly with the Fuel Tank Range Calculator.
What is Fuel Tank Range?
The Fuel Tank Range calculation tells you your driving range from a few simple inputs. The figure you are solving for here is the driving range.
The Fuel Tank Range formula
The core formula is:
Driving range = Fuel tank capacity × Fuel economyHere is what each input means:
- Fuel tank capacity — a value measured in litres. Example: 45 litres.
- Fuel economy — a value measured in km/l. Example: 15 km/l.
How to calculate it step by step
- Write down the fuel tank capacity (for example, 45 litres).
- Write down the fuel economy (for example, 15 km/l).
- Apply the formula above to get your driving range.
- Double-check the result with the Fuel Tank Range Calculator.
Worked examples
Example 1
| Input / Output | Value |
|---|---|
| Fuel tank capacity | 45 litres |
| Fuel economy | 15 km/l |
| Driving range | 675 |
With fuel tank capacity of 45 litres and fuel economy of 15 km/l, the driving range works out to 675.
Example 2
With fuel tank capacity of 90 litres and fuel economy of 15 km/l, the driving range works out to 1,350.
| Result | Value |
|---|---|
| Driving range | 1,350 |
Example 3
With fuel tank capacity of 23 litres and fuel economy of 15 km/l, the driving range works out to 345.
| Result | Value |
|---|---|
| Driving range | 345 |
Tips for an accurate result
- Keep your units consistent — mixing, say, months with years or grams with kilograms is the most common source of error.
- Round only at the very end. Rounding inputs early can shift the final answer noticeably.
- Re-run the numbers whenever an input changes, rather than estimating from an old result.
Prefer not to do the maths by hand? — the Fuel Tank Range Calculator does it instantly, for free, with the formula and a worked example built in.
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