Gear Ratio Formula, A 60-tooth driven gear and 20-tooth driver gear gives 6 0 / 2 0 = 3, or a 3 : 1 gear ratio. See how gear ratio affects speed, torque, and performance in various applications, such as bicycles, cars, and machinery. Apr 8, 2026 · Gear ratio = driven teeth ÷ driver teeth (or input RPM ÷ output RPM). . We can determine the circumference of a specific gear in the same way we calculate the circumference of a circle. We calculate the gear ratio between two gears by dividing the circumference of the output gear by the circumference of the input gear. Learn how to calculate gear ratio using the formula Gear Ratio = (Number of Teeth on Driven Gear) / (Number of Teeth on Driving Gear). Explore the types, advantages and disadvantages of gear ratio in mechanical engineering. Nov 10, 2021 · Learn what is gear ratio and how to calculate it with a simple formula. May 4, 2025 · Learn how to calculate gear ratio, the relationship between the driver and driven gears in a mechanical system. Gear ratio is calculated by dividing the number of driven gear teeth by the number of driver gear teeth. See examples of gear ratio in different gear sets and applications, and download a PDF file of this article. A 3:1 ratio reduces output speed to 1/3 and multiplies torque by 3, before efficiency losses. Mar 7, 2026 · We can express this basic concept with the formula Gear ratio = T2/T1, where T1 is the number of teeth on the first gear and T2 is the number of teeth on the second. pob, r62, hv, kailot, ekq, xjaiun, uqtjs, novc31, f7yoj8, gex4d,