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Fuel range calculator

Estimate how far you can drive on a full tank from its size and fuel consumption.

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Need Range (km)? The Fuel range calculator derives it from Tank size (L), Consumption (L/100 km) in one step. For instance, with Tank size (L) = 50 and Consumption (L/100 km) = 6.5 it returns Range (km) = 769.231.

How to use it

  1. Enter your values: Tank size (L), Consumption (L/100 km).
  2. Read the result instantly: Range (km).

Frequently asked questions

What does the Fuel range calculator actually compute?

It takes Tank size (L) and Consumption (L/100 km) and derives Range (km) from them. The calculation is live as you type, so the result updates on every change.

What information do I need to provide?

2 values: Tank size (L) and Consumption (L/100 km). Nothing else is required — no account, no file upload.

Can you show a worked example?

With Tank size (L) = 50 and Consumption (L/100 km) = 6.5, the calculator returns Range (km) = 769.231. Those figures come from running this exact tool, so you can reproduce them by entering the same values.

What happens if I enter larger values?

It moves a lot. Using Tank size (L) = 55 and Consumption (L/100 km) = 13 instead, Range (km) goes from 769.231 to 423.077 — which is why it is worth testing a few scenarios rather than trusting a single figure.

What does it give for smaller values?

Scaled down to Tank size (L) = 45 and Consumption (L/100 km) = 3.3, Range (km) comes out at 1,364. The relationship is worth checking at both ends before you rely on a single result.

When would I actually use this?

Deciding between two cars, or between keeping one and replacing it: fuel or charging, insurance, depreciation and what a kilometre really costs.

What is the most common mistake?

Comparing on fuel alone. Depreciation is usually the largest line in the first years and dwarfs the difference in consumption between two comparable cars.

What is the difference between the Fuel range calculator and the EV range calculator?

Both return Range (km). What differs is what they ask for: this one wants Tank size (L) and Consumption (L/100 km), the EV range calculator wants Battery capacity (kWh) and Consumption (kWh/100 km). Use whichever matches the numbers you already have.

Is there a tool for the next step?

Fuel consumption calculator is the closest one after this: Work out your fuel consumption per 100 km and its cost.

What else is worth having open alongside it?

Fuel cost calculator and Fuel savings calculator — they come up in the same task often enough to be worth a second tab.

Further reading

All guides →
How-toHow Far Can I Drive on the Fuel I Have Left?Estimate remaining range from fuel left and your car's economy. A simple method for gas and diesel, with a worked example and a safety margin.ExplainerWhat Affects an Electric Car's Range?Battery size, efficiency, speed, cold weather and terrain all move an EV's real range far from the sticker figure. Here's how each factor works.How-toSpeed, Distance and Time: The Formula and How to Rearrange ItOne triangle, three formulas. Learn speed = distance / time, rearrange it for distance or time, and keep your units consistent so the answer is right.How-toThe Real Cost Per Mile of Driving: Beyond Just FuelFuel is only part of what a mile costs. Add depreciation, insurance and maintenance to find your true cost per mile — and why it is higher than the pump suggests.ExplainerThe Fuel Saving That Is Not LinearGoing from 10 to 20 mpg saves six times more fuel than going from 30 to 40, over the same distance. The reason is that fuel used is the reciprocal of fuel economy — and it changes which vehicle you should replace first.GuideThe Real Cost of a Trip Is Not the FuelComparing a drive with a train ticket on fuel alone understates the car by a factor of five. Here is how to build the marginal cost of a trip, how to separate it from the fixed cost of ownership, and why both numbers are correct answers to different questions.