Automotive & Travel
Displaying all 3 tools in this category.
Gear Ratio Calculator
Calculate your exact vehicle speed from engine RPM, transmission gear ratio, rear axle ratio, and tire diameter. Perfect for Tremec swaps and custom gearing.
Tire Size Calculator
Compare two tire sizes instantly. Calculate the difference in diameter, sidewall height, circumference, and exact speedometer error for plus-sizing your wheels.
Fuel Efficiency Calculator
Calculate your exact trip cost and fuel efficiency. Convert between MPG, km/L, and L/100km to budget your road trips and track your vehicle's gas mileage.