Torqmetry / Motorcycle Guide
Motorcycle Fuel Cost & Range Guide
Knowing your realistic fuel use makes trip planning easier. Combine measured consumption, usable tank capacity and local fuel prices to estimate costs and stops.
Try the Fuel Cost & Range Calculator →The essentials
- In L/100 km, a lower number means lower consumption. In mpg, a higher number means better fuel economy; US and UK gallons are different sizes.
- Real-world fuel economy changes with speed, wind, temperature, hills, load and throttle use.
- Plan to refuel before reaching the theoretical maximum range. The full nominal tank capacity may not be usable.
Step-by-step
- 1
Measure realistic consumption
Use several normal rides or fill-up records rather than relying on a best-case manufacturer claim.
- 2
Enter tank size and fuel price
Use the tank capacity in your manual and the price actually charged at the pump.
- 3
Calculate travel costs
For mpg, divide trip miles by mpg to estimate gallons used. For L/100 km, multiply trip km by consumption and divide by 100.
- 4
Plan refueling with margin
The calculator estimates ideal full-tank range. Allow a safety margin for fuel reserve, traffic and unexpected detours.
Understanding the calculation
Enter your tank size, fuel consumption, fuel price per gallon or litre, and trip distance. The calculator converts everything to consistent units, then divides fuel price by consumption to get the cost per mile or km, multiplies by trip distance for the total trip cost, and multiplies tank capacity by consumption to find your full-tank range.
In imperial mode consumption is in US mpg (miles per US gallon) — a higher number is better. In metric mode consumption is in L/100km — a lower number is better. The calculator handles the conversion automatically when you switch units.
Example: 300-mile trip on a 650cc bike
- 1. Tank size: 4.6 gallons (17.4 L)
- 2. Consumption: 55 mpg
- 3. Fuel price: $3.75/gallon
- 4. Trip distance: 300 miles
- 5. Cost per mile = $3.75 / 55 = $0.068/mi
- 6. Trip cost = $0.068 × 300 = $20.45
- 7. Range = 4.6 gal × 55 mpg = 253 miles
Trip fuel cost: $20.45, Cost per mile: $0.068, Full-tank range: 253 miles
Frequently Asked Questions
Why does my real fuel economy differ from the manufacturer claim?
Manufacturer figures come from controlled laboratory tests. Real-world riding involves throttle changes, wind, hills, cargo, and riding style — all of which lower fuel economy. Aggressive acceleration and high-speed highway riding can reduce mpg by 15-25% versus the sticker figure.
Should I use mpg or L/100km?
Use whichever your bike manual or local fuel pump uses. In the US, mpg is common; UK imperial gallons are larger and UK mpg must be converted to US mpg before using this calculator. In Canada, Australia, and most of Europe, L/100km is standard. The tool converts the numbers you entered when you toggle units.
How accurate is the range estimate?
The range assumes you maintain your current average consumption and use every drop in the tank. In practice, the low-fuel light comes on with 0.5-1 gallon remaining, so usable range is lower. Plan to fill up at 80-85% of the calculated range.
Does fuel price include taxes?
Enter the price you actually pay at the pump, which includes all taxes. This gives you the true out-of-pocket cost for your trip. If you want to compare pre-tax costs, enter the pre-tax price instead — the calculation works either way.