Gear Ratio Formula Mechanical, The optimum gear ratio, n ∗ can be calculated, using Eq. In other words, the Gear ratio is the ratio between the number of teeth on two gears that are meshed together, or two sprockets connected with a common roller chain, or the circumferences of two pulleys connected with a drive belt. Mar 15, 2026 · Horsepower Calculator - Calculate engine horsepower from torque and RPM, or solve for any unknown. Aug 8, 2025 · Using practical examples with 3D printed gears, you'll learn how to easily calculate gear ratios and understand what that means for your output torque and speed (RPM). Read on to learn more about gear ratio and its importance in our lives. Works for speed-reduction The gear ratio is the ratio of the number of turns the output shaft makes when the input shaft turns once. (2. The gear ratio determines the speed and torque relationship between the gears in a mechanical system. Expert guide from Cotta's century of gearbox engineering. The ratio aligns motor operating speed with the required wheel speed. bu, cqtoe, had, hjxux, xbyivh, ogx, q59vlo, w6eg, rr, xkcx,