Riding

Motorcycle Fuel Range & Cost Calculator

Know how far a tank really takes you — and what the fuel costs. Tank size, mpg, and reserve in; range to reserve, cost per mile, and trip cost out.

Tank & economy

Reserve, trip, and gas price are optional — leave blank to skip the cost estimate.

Tank capacity

gal

Fuel economy

mpg

Reserve fuel

gal

Fuel left when the light comes on. 0 if you run it dry.Trip distance

Optional — for fuel and cost of a specific ride.Gas price

$/gal

Optional — enables cost per mile and trip cost.

Range to reserve

144 mi

Miles before you're on reserve

Full-tank range

180 mi

Tank × mpg (running it dry)

Fuel cost / mile

$0.08

Gas price ÷ mpg

Trip fuel

4.89 gal

≈ 1.5 fill-ups

Trip fuel cost

$17.60

Trip gallons × gas price

Real-world range varies with speed, headwind, load, and how hard you ride. Highway cruising often beats the EPA-style number; aggressive canyon riding can drop it 20–30%. Treat range-to-reserve as the point to start looking for a station, not the point you'll actually coast to a stop.

The formula

There is no mystery here — just distance = fuel × economy, applied twice so you get the number that actually matters on the road (range to reserve) alongside the theoretical maximum:

Full-tank range   = tank (gal) × mpg
Range to reserve  = (tank − reserve) × mpg
Fuel cost / mile  = gas price ÷ mpg
Trip fuel (gal)   = trip miles ÷ mpg
Trip fuel cost    = trip fuel × gas price

Worked example

A sport-tourer with a 4-gallon tank averaging 45 mpg, with about 0.8 gallon of reserve, on a 220-mile day at $3.60/gallon:

Full-tank range = 4 × 45 = 180 miles.
Range to reserve = (4 − 0.8) × 45 = 144 miles — plan your fuel stops around this.
Cost per mile = 3.60 ÷ 45 = $0.08/mile.
Trip fuel = 220 ÷ 45 ≈ 4.9 gallons → trip cost ≈ $17.60, about 1.5 fill-ups.

Range to reserve by tank size and mpg

A quick reference for full-tank range (miles). Subtract your own reserve to get the planning number. Most street bikes fall between 40 and 55 mpg; big cruisers and ADV bikes with the throttle open can dip into the 30s.

Tank	35 mpg	45 mpg	55 mpg	65 mpg
3.0 gal	105 mi	135 mi	165 mi	195 mi
4.0 gal	140 mi	180 mi	220 mi	260 mi
5.0 gal	175 mi	225 mi	275 mi	325 mi
6.0 gal	210 mi	270 mi	330 mi	390 mi

Heading out on a long ride in the cold? Pair this with the wind chill calculator so you plan fuel and warmth stops together.

Frequently asked questions

How do I calculate my motorcycle’s range? +

Multiply usable tank capacity by fuel economy: range = tank (gallons) × mpg. A 4-gallon tank at 45 mpg gives 180 miles on a full tank. Subtract your reserve to get the more useful number — how far you can go before the low-fuel light comes on.

What is “range to reserve” and why does it matter? +

Most tanks hold a reserve — the fuel still available after the warning light. Range to reserve = (tank − reserve) × mpg. That is the distance you can plan on before you need to start looking for a station, rather than the absolute distance to a dead stop, which you never want to test.

How is fuel cost per mile calculated? +

Cost per mile = gas price ÷ mpg. At $3.60/gallon and 45 mpg that is 8 cents per mile. For a specific ride, trip fuel = trip miles ÷ mpg, and trip cost = trip fuel × gas price.

Why is my real-world range lower than the calculator? +

The math assumes a steady mpg. Real economy drops with high speed, headwind, heavy load, luggage, and aggressive throttle. Highway cruising at a steady 60–70 mph is usually close to or better than the rated number; canyon or track riding can cut range 20–30%.

Does this work for liters and km? +

This tool uses US gallons, mpg, and miles. If you run metric, convert first: 1 US gallon ≈ 3.785 liters and 1 mile ≈ 1.609 km. The formulas (range = tank × economy, cost = distance ÷ economy × price) are identical in any consistent unit set.

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Last reviewed: August 11, 2026. Reviewed by the RiderCalc editorial team.