Driving Range Calculator — Hours vs Fuel
Two tanks limit every day: legal hours and diesel. Enter both — the smaller one is your real range.
HOURS BIND
$—
REALISTIC RANGE TODAY (MI)
Legal range (hours × mph)—
Fuel range (gal × MPG)—
Worked example: 5 hours, 100 gallons
Legal: 5 × 55 = 275 miles. Fuel: 100 × 6.5 = 650 miles. Hours bind — plan a 275-mile day and stop for the 10-hour break, not the pump.
Range questions
How far can I legally drive today?
Drive hours left × realistic average mph. At 5 hours left and 55 mph, 275 miles — mountains, traffic, and fuel stops lower the real average.
What limits range more often, hours or fuel?
Hours, on most OTR days: 11 hours × 55 mph is ~605 miles while dual 120-gallon tanks at 6.5 MPG cover ~1,400. Fuel binds on short-fuel or detour days.
Does this replace trip planning?
No. Check the 14-hour window and cycle in the HOS calculator too — range here covers only the 11-hour drive clock plus fuel.