Mechanical Calculators
Last updated: September 2026
Pump Head and Power Calculator
Calculate the hydraulic power required to drive a pump based on flow rate, total head (static plus friction), fluid density, and pump efficiency.
Shaft Power Calculator
Calculates the mechanical power transmitted through a rotating shaft given its torque and rotational speed.
Belt Drive Length Calculator
Calculate the required belt length for open or crossed two-pulley drive systems given pulley diameters and center distance.
Pulley System Calculator
Calculate the effort force required to lift a load using fixed, movable, or compound pulley systems at a given mechanical efficiency.
Belt Drive Calculator
Calculate the driven pulley speed for a belt drive system by entering pulley diameters and the drive shaft RPM.
Pump Power Calculator
Calculate the shaft power and motor input power needed to pump a fluid against a given head.
Shaft Torque and Stress Calculator
Determine the safe torque capacity and shear stress in a rotating shaft.
Fan Airflow and Power Calculator
Calculates fan power consumption from blade swept area, rotational speed, and static pressure.
Heat Exchanger Calculator
Determine the Log Mean Temperature Difference (LMTD) and required heat transfer surface area for shell-and-tube heat exchangers.
Spring Force Calculator
Calculate the restoring force a spring exerts when compressed or stretched using Hooke's Law.
Belt Tension Calculator
Find the tight-side tension required in a belt drive to transmit a given power at a known belt speed.
Bearing Load Calculator
Computes the equivalent dynamic load on a bearing by combining radial and axial forces with an application load factor.
Screw Torque Calculator
Calculates the torque needed to clamp a fastener to a target axial force, accounting for thread geometry and friction.
Screw Thread Calculator
Determines the clamping force a threaded fastener generates from applied torque, accounting for friction.
Torque Calculator
Calculate the rotational force (torque) produced when a force is applied at a distance from a pivot point.
Chain Drive Calculator
Calculates the output speed of a chain drive system given sprocket tooth counts, input speed, and drive efficiency.
Shaft Torque Calculator
Determine the minimum shaft diameter needed to safely transmit a given power at a specified speed and shear stress limit.
Screw Thread Stress Calculator
Calculates the shear stress on screw threads given applied force, thread geometry, and engagement length.
Bolt Torque Calculator
Calculates the tightening torque required to achieve a target clamp load in a bolted joint, based on bolt diameter, material strength, and friction.
Hydraulic Cylinder Calculator
Calculate the output force of a hydraulic cylinder during extension or retraction from bore diameter, rod diameter, and system pressure.
Shaft Deflection Calculator
Calculates the midpoint or tip deflection of a rotating or static shaft under a transverse load, for both simply supported and cantilever configurations.
Bearing Life Calculator
Estimate how long a rolling-element bearing will last under a given load and speed.
Spring Rate Calculator
Compute the spring rate (stiffness) of a helical compression spring from its wire and coil geometry.
Gear Ratio Calculator
Calculate the gear ratio between two meshing gears from their tooth counts.
Pressure Vessel Wall Thickness Calculator
Determines the minimum wall thickness required for cylindrical or spherical pressure vessels under internal pressure.