Estimate how many kilometers or miles you can drive on the fuel remaining in your tank, from your tank capacity, current fuel level, and consumption rate.
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This tool estimates how much farther you can drive on the fuel currently in your tank. It works by multiplying your tank's total capacity by your current fuel level (as a percentage, matching what most fuel gauges display) to find the volume of fuel remaining, then dividing that by your car's fuel consumption rate to estimate a distance. You can enter your tank capacity in liters or U.S. gallons, and your consumption rate in either L/100km (the standard metric measure) or MPG (the standard U.S. measure) — the calculator handles the unit conversion and the underlying math automatically. This is especially useful for deciding whether you can safely reach your destination, or the next fuel station, before needing to refuel.
"Can I make it to the next town before I need gas?" is a question every driver has faced, usually while glancing nervously between the fuel gauge and a stretch of highway with no visible fuel stations. This calculator answers that question with a straightforward estimate, using three numbers you likely already know or can find quickly: your tank's total capacity, your current fuel level as a percentage, and your car's typical fuel consumption rate.
The calculation itself is simple arithmetic once you have those three inputs. Multiplying tank capacity by the current fuel percentage gives the actual volume of fuel remaining — a 50-liter tank at 25% has 12.5 liters left, for instance. From there, if you know your consumption rate in liters per 100 kilometers, dividing your remaining fuel by that rate (and multiplying by 100) gives your estimated remaining distance in kilometers. If you work in miles per gallon instead, the calculator converts your remaining fuel into gallons first, then multiplies by your MPG figure to get remaining miles directly, since MPG already expresses distance per unit of fuel rather than fuel per unit of distance.
The trickiest part of getting an accurate estimate isn't the math — it's the inputs. Fuel gauges are useful but imperfect: many vehicles are calibrated to stay on "Full" for the first several percent of fuel used, then drop more linearly, and some intentionally read "Empty" while a small reserve still remains, as a built-in safety margin from the manufacturer. If your car has a trip computer that shows a more precise fuel percentage or remaining-range estimate of its own, that reading will generally be more reliable than eyeballing a needle gauge. Likewise, your fuel consumption rate is only as good as your last measurement of it — a figure calculated from stop-and-go city driving will overestimate your range on a highway trip, and vice versa, since consumption can easily vary by 20-30% or more between driving conditions.
This is precisely why the result here should be treated as a planning estimate rather than a hard number to cut it close against. Real-world fuel consumption is affected by driving speed and style (aggressive acceleration and high speeds burn noticeably more fuel), terrain (hills and headwinds increase consumption), traffic (idling in stop-and-go traffic wastes fuel relative to distance covered), vehicle load (a fully loaded car or one towing a trailer uses more fuel), tire pressure (underinflated tires increase rolling resistance), and even outside temperature (cold engines and increased use of climate control both reduce efficiency). None of these factors are captured by a single consumption-rate number, which is exactly why they can cause your actual range to differ meaningfully from this estimate.
The practical takeaway: use this calculator as a helpful planning tool for everyday decisions — deciding whether to refuel now or at the next stop, or estimating whether you'll comfortably make it to your destination — but build in a reasonable safety margin, especially before long trips through remote areas with sparse fuel stations. If your estimated range is close to your remaining trip distance, it's almost always the safer choice to refuel sooner rather than risk running dry.
It multiplies your tank capacity by your current fuel level percentage to find the fuel remaining, then divides that amount by your car's fuel consumption rate (in L/100km or MPG) to estimate how far you can drive before running out.
Real-world range varies with driving style, terrain, traffic, weather, vehicle load, and tire pressure, all of which change your actual fuel consumption rate from trip to trip — this tool gives a straightforward estimate based on the average consumption rate you enter, not a live reading from your car's sensors.
Fuel gauges are generally reliable but not perfectly linear — many vehicles show 'Full' for a while even after using some fuel, and some gauges are deliberately calibrated to sit on empty a bit before the tank is truly dry, as a safety margin. For the most accurate estimate, use your trip computer's more precise percentage or the fuel amount from your last fill-up if you know it.
Many modern cars display an average consumption figure on the trip computer or infotainment screen. You can also calculate it yourself from a recent fill-up using this site's Fuel Consumption Calculator, which converts your trip distance and fuel used into L/100km or MPG.
No — treat this as a helpful planning estimate, not a precise measurement. Because real-world consumption varies, it's safest to refuel well before your estimated range reaches zero, especially before long trips through areas with few fuel stations.