Machines and mechanisms Calculators

Belt Length Calculator The belt length calculator will tell you the length of a belt spread out between two pulleys. BMEP Calculator (Brake Mean Effective Pressure Calculator) Calculate engine efficiency with our BMEP calculator using the BMEP formula. Accurate and easy to use for all your brakes mean effective pressure needs. Carburetor CFM Calculator This carburetor cfm calculator will help you to estimate the correct carburetor size for your engine. Crawl Ratio Calculator Calculate the crawl ratio of a vehicle from the transmission ratio, transfer case ratio, and axle gear ratio. Engine Displacement Calculator Determine the capacity of the engine using engine displacement calculator. Exhaust Diameter Calculator Use the engine's RPM and cylinder's volume to calculate the exhaust diameter of your vehicle. Fulcrum Calculator Use this fulcrum calculator to determine a lever's fulcrum location from the load you want to lift. Gear Ratio Calculator This gear ratio calculator determines the rate of mechanical advantage or disadvantage a gear train produces in a gear system. Read on to learn more about gear ratio and its importance in our lives. Lever Calculator Discover one of the simplest machine ever invented with our lever calculator. Linear Actuator Force Calculator Our linear actuator force calculator computes the maximum force required for the linear actuator. Mechanical Advantage Calculator Mechanical advantage calculator finds out the force amplification when using levers, pulleys, screws, wedges, ramps, and wheels & axles. NPSH Calculator – Net Positive Suction Head The NPSH calculator – net positive suction head – is a handy tool that will help you obtain the available NPSH of your system, so you can avoid having cavitation in your pump. Piston Force Calculator Calculate the force in a cylindrical piston from the pressure applied. Piston Speed Calculator Our piston speed calculator calculates the mean speed a piston moves in the cylinder bore. Prop Pitch Calculator Use this tool to calculate the prop pitch of a boat from its speed, gear ratio, engine speed, and propeller slip. Prop Slip Calculator Use this tool to calculate the prop slip of a boat propeller. Pulley Calculator Pulley calculator finds all parameters of a belt drive system: the RPM, speed, belt length, belt tension, and torque. Pump Horsepower Calculator Determine the hydraulic and shaft power of pumps using the pump horsepower calculator. Shaft Size Calculator Determine the minimum diameter of your shaft using our shaft size calculator. Speeds and Feeds Calculator This speeds and feeds calculator will help you set the rotation speed and feed rate of your machine tool. Spring Calculator The famous spring calculator helps you determine the relationship between spring deformation and the force or torque applied. Spring Rate Calculator The spring rate calculator can help you obtain the spring rate (spring constant) for any given spring. Spring Rate Converter Use the spring rate converter to switch quickly between multiple spring stiffness units. Torsion Spring Calculator Omni's torsion spring calculator makes calculating the parameters of such a device quick and easy! Transmission Calculator The transmission calculator helps you quickly determine vehicle speed, RPM, and the right transmission and differential gear ratios. Twist Rate Calculator Use the twist rate calculator to estimate the bullet stability factor and the right twist rate for the bullet. Wing Loading Calculator Determine the wing loading parameter to kick-start your aircraft design process using the wing loading calculator.