Gear Ratio Calculator
Calculate gear reduction or overdrive ratio, output speed, torque, pitch-line velocity, and tangential tooth force for a spur-gear pair.
Open calculator →Mechanical Engineering Calculators
Focused machine-design calculators for gearing, speed, torque, loading, and related mechanical design checks.
Every calculator below is a focused interface over an existing Neutron STEM Lab engineering engine. Use the standalone route for a fast result, then move into the linked workbench when the calculation becomes part of a larger design or simulation.
Continue into the full engineering workbenches
The standalone calculators are intentionally narrow. These linked workbenches use the same underlying engines while adding broader analysis, simulation, comparison, and design workflows.
Machine Design
Fifteen modules covering gear ratios and trains, spur gear geometry, belt and chain drives, bearing life, shaft sizing, keys, bolt preload, thread engagement, springs, flywheels, cam motion, mechanical advantage, and hydraulic cylinders.