Engineering Calculators
Free, verified engineering calculators with step-by-step guides and reference data.
Crosswind Component Calculator for Pilots
Calculate crosswind and headwind from wind direction, speed, and runway. Includes gust components, opposite runway, aircraft limit check, and clock method tip.
Pulley RPM Calculator: Speed Ratio, Belt Length & Torque
Calculate driven pulley RPM, belt length, speed ratio, and torque for any belt drive. Imperial and metric. Supports V-belt, flat belt, and timing belt drives.