When to use this calculator
Estimate range from usable fuel and average consumption. Does not include a reserve unless you subtract it from usable fuel.
Explore the fuel use & cost calculators for other questions in this topic. For a related calculation, use the Miles Per Gallon UK Calculator: Calculate fuel economy using imperial gallons and miles.
PUTTING IT INTO PRACTICE
Fuel Range: a worked example
The values below are an illustrative example, not a recommendation. Replace them with measurements or assumptions that match your question.
| Input | Example value |
|---|---|
| Usable fuel (L) | 50 |
| Consumption (L/100 km) | 7 |
| Result | 714.285714 km |
- Check the input labels and enter the example values above.
- Apply the relationship: Range = usable litres ÷ consumption × 100.
- The result is 714.285714 km, rounded for display.
How to interpret your result
Does not include a reserve unless you subtract it from usable fuel.
State the fuel-economy convention: UK imperial and US liquid gallons have different volumes. L/100 km is consumption, so lower values indicate less fuel used per distance. Input prices are scenario values.
Frequently asked questions
Are UK MPG and US MPG comparable without conversion?
No. Both use miles but different gallon volumes, so their numerical values differ for the same vehicle consumption.
How do I use the fuel range calculator?
Enter usable fuel (l), consumption (l/100 km). The result updates automatically. Use the units shown beside each input; the example values illustrate the method.
Which formula does this calculator use?
Range = usable litres ÷ consumption × 100.
What should I check before using the result?
Does not include a reserve unless you subtract it from usable fuel.
How are results rounded?
Scalar numbers display up to six decimal places, with scientific notation for very large or small values. Text, fraction, date and schedule outputs use the format described on the tool. Intermediate calculations use JavaScript floating-point arithmetic. Keep sensible precision for your measurements.
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