Calculate your result
Source: Check current provider or route information
Quick answer
Fuel left = tank capacity × fuel percentage ÷ 100, or enter litres. Adjusted L/100 km = measured consumption × (1 + your conditions estimate ÷ 100). Safe range = max(0, fuel left − tank reserve litres) ÷ adjusted consumption × 100.
How it works
Use this fuel range calculator to estimate full-tank range, remaining range and safe range from litres or a tank percentage, with a reserve for refuelling.
Formula
Fuel left = tank capacity × fuel percentage ÷ 100, or enter litres. Adjusted L/100 km = measured consumption × (1 + your conditions estimate ÷ 100). Safe range = max(0, fuel left − tank reserve litres) ÷ adjusted consumption × 100.
Assumptions and common mistakes
Check units, input values and the method before relying on an estimate. Review the existing tool notes and official sources below.
Quick answer
Fuel left = tank capacity × fuel percentage ÷ 100, or enter litres. Adjusted L/100 km = measured consumption × (1 + your conditions estimate ÷ 100). Safe range = max(0, fuel left − tank reserve litres) ÷ adjusted consumption × 100.
A 50-litre tank at 60% contains 30 litres. Keeping 10% of tank capacity (5 litres) in reserve leaves 25 usable litres. At 8 L/100 km, safe range is 312.5 km, versus 375 km before reserve. Example only.
How to use the fuel range calculator
Enter tank capacity, choose percent or litres, and enter fuel remaining. Choose L/100 km or km per litre. Set the percentage of the full tank to keep in reserve and any estimated consumption increase. Add trip distance to estimate refuels.
What the result includes
The reserve is a percentage of full tank capacity. Empty fuel levels are allowed and give zero range. Refuel counts assume each stop fills the tank and the same consumption throughout; they do not locate stations.
Fuel gauge limitations
Fuel gauges and consumption displays are estimates. Hills, load and traffic can change use. A conditions percentage is your own assumption, not a measured effect of towing or air conditioning. Refuel before the reserve and confirm station availability.
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Frequently asked questions
How does the fuel range calculator work?
Fuel left = tank capacity × fuel percentage ÷ 100, or enter litres. Adjusted L/100 km = measured consumption × (1 + your conditions estimate ÷ 100). Safe range = max(0, fuel left − tank reserve litres) ÷ adjusted consumption × 100.
Are the prices in the form current?
No. Sample prices explain the calculation. Replace them with your own dated quote, measurement or current pump price.
When does the result update?
Select Calculate after changing the fields. Copy result and Print let you keep the result. Reset restores the example values.
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