mechanical Calculators
Torque Calculator
Compute the rotational force (torque) produced when a force is applied at a distance from a pivot point. Use it when tightening bolts, designing levers, or sizing motors.
Gear Ratio Calculator
Find the gear ratio between two meshing gears by entering their tooth counts. Use it when designing drivetrains, selecting motor gears, or analysing speed-versus-torque trade-offs.
Spring Force Calculator
Calculate the restoring force a spring exerts when compressed or stretched using Hooke's Law. Ideal for engineering design, physics coursework, and selecting the right spring for a mechanism.
Belt Length Calculator
Determine the required belt length for a two-pulley drive system given pulley diameters and centre distance. Essential for designing conveyor systems, HVAC drives, and power transmission layouts.
Mechanical Advantage Calculator
Calculate the mechanical advantage of any simple machine by comparing output force to input force. Use it to evaluate levers, pulleys, ramps, and other force-multiplying devices.
Shaft Power Calculator
Calculates the mechanical power transmitted through a rotating shaft given its torque and rotational speed. Use this when sizing motors, gearboxes, or drive shafts in mechanical systems.
Bearing Load Calculator
Computes the equivalent dynamic load on a bearing by combining radial and axial forces with an application load factor. Use this when selecting bearings or verifying load ratings in rotating machinery.
Friction Force Calculator
Calculates the friction force resisting relative motion between two surfaces from the normal force and the coefficient of friction. Use it in braking, clamping, or sliding contact design problems.
Screw Torque Calculator
Calculates the torque needed to clamp a fastener to a target axial force, accounting for thread geometry and friction. Use it when tightening critical bolted joints to avoid under- or over-torquing.
Pulley Speed Calculator
Calculates the output shaft speed of a belt-and-pulley system based on pulley diameters and input speed. Use it when designing drive systems to achieve a target RPM ratio between driver and driven shafts.
Torque and Power Calculator
Convert between torque, rotational speed, and mechanical power for motors, engines, and drivetrain components. Use it when sizing a motor or verifying shaft power output at a given RPM and efficiency.
Beam Deflection Calculator
Find the maximum midpoint deflection of a simply supported or cantilever beam under a central point load. Essential for structural engineers checking serviceability limits and avoiding excessive sag.
Pressure Vessel Calculator
Compute the minimum required wall thickness for a thin-walled cylindrical pressure vessel per the ASME hoop-stress formula, including a corrosion allowance. Used by mechanical and process engineers during vessel design and code compliance checks.
Pulley System Calculator
Calculate the effort force required to lift a load using fixed, movable, or compound pulley systems at a given mechanical efficiency. Ideal for rigging engineers, physics students, and maintenance teams planning lifts.
Hydraulic Cylinder Calculator
Calculate the output force of a hydraulic cylinder during extension or retraction from bore diameter, rod diameter, and system pressure. Used by hydraulic system designers to verify actuator force capacity for machinery and presses.
Gear Ratio Calculator
Determine the output speed and mechanical advantage of a gear pair by entering tooth counts, input RPM, and system efficiency. Ideal for engineers and hobbyists designing gearboxes, drivetrains, or robotics.
Belt Drive Calculator
Calculate the driven pulley speed for a belt drive system by entering pulley diameters and the drive shaft RPM. Use it when sizing pulleys for motors, conveyor systems, or power tools.
Torque Calculator
Compute the effective torque produced by a force applied at a given distance and angle from a pivot, accounting for system efficiency. Use it for wrench sizing, lever design, and mechanical system analysis.
Spring Force Calculator
Calculate the total force exerted by a spring given its spring constant, displacement, preload force, and safety factor. Useful for mechanical design, suspension systems, and actuator sizing.
Bearing Load Calculator
Estimate the L10 bearing life in hours based on radial and axial loads, operating speed, and dynamic load rating. Essential for engineers selecting bearings and predicting maintenance intervals.
Screw Thread Calculator
Determines the clamping force a threaded fastener generates from applied torque, accounting for friction. Essential for engineers and mechanics sizing bolts or designing assemblies where clamping load is critical.
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. Used by mechanical engineers to verify shaft stiffness and prevent bearing misalignment.
Hydraulic Cylinder Calculator
Computes the output force produced by a hydraulic cylinder given its bore diameter, working pressure, and mechanical efficiency. Used by hydraulic system designers to size cylinders for presses, lifts, and mobile equipment.
Fan Performance Calculator
Calculates the motor power (HP) required to drive a fan based on airflow rate, static pressure, and combined fan and motor efficiencies. Used by HVAC engineers and system designers to select appropriately sized fan motors.
Chain Drive Calculator
Calculates the output speed of a chain drive system given sprocket tooth counts, input speed, and drive efficiency. Useful for mechanical designers selecting sprocket ratios for conveyors, motorcycles, and industrial machinery.
Bearing Life Calculator
Estimate how long a rolling-element bearing will last under a given load and speed. Use it when selecting bearings for motors, gearboxes, or any rotating machinery to meet a target service life.
Belt Tension Calculator
Find the tight-side tension required in a belt drive to transmit a given power at a known belt speed. Use it when designing V-belt or flat-belt systems to size belts, pulleys, and shafts correctly.
Shaft Torque Calculator
Determine the minimum shaft diameter needed to safely transmit a given power at a specified speed and shear stress limit. Essential for mechanical designers sizing drive shafts, motor shafts, and spindles.
Pump Power Calculator
Calculate the shaft power a centrifugal pump motor must deliver to move fluid against a given head at a specified flow rate. Use it when selecting pump motors or auditing energy consumption in piping systems.
Screw Thread Calculator
Compute the tensile load capacity of a metric screw thread based on nominal diameter, pitch, material strength, and safety factor. Use it when verifying bolt joint adequacy in structural or mechanical assemblies.
Heat Exchanger Calculator
Determine the Log Mean Temperature Difference (LMTD) and required heat transfer surface area for shell-and-tube heat exchangers. Essential for engineers designing or auditing industrial heating and cooling systems.
Belt Drive Length Calculator
Calculate the required belt length for open or crossed two-pulley drive systems given pulley diameters and center distance. Used by mechanical engineers and technicians when sizing V-belts or flat belts for machinery.
Bearing Load Capacity Calculator
Estimate the L10 bearing fatigue life in hours given the dynamic load rating, applied load, and shaft speed. Used by mechanical designers to verify bearing selection and predict maintenance intervals.
Shaft Torque and Stress Calculator
Calculate the maximum torsional shear stress in a solid circular shaft given applied torque and shaft diameter. Used in mechanical design to verify shafts against yield and fatigue limits before manufacture.
Pump Power Calculator
Calculate the shaft power required to drive a pump given flow rate, total head, efficiency, and fluid type. Ideal for engineers sizing pumps or estimating energy consumption in water supply, HVAC, and process systems.
Pressure Vessel Wall Thickness Calculator
Determines the minimum wall thickness required for cylindrical or spherical pressure vessels under internal pressure. Use it when designing tanks, boilers, or piping to meet safety codes.
Fan Airflow and Power Calculator
Calculates fan power consumption from blade swept area, rotational speed, and static pressure. Use it when sizing ventilation fans or verifying energy budgets for HVAC and industrial systems.
Screw Thread Stress Calculator
Calculates the shear stress on screw threads given applied force, thread geometry, and engagement length. Use it when verifying that a threaded joint won't strip under tensile or torsional loading.
Flywheel Energy Storage Calculator
Calculates the usable kinetic energy stored in a flywheel between maximum and minimum operating speeds, accounting for system efficiency. Use it when designing energy storage systems or regenerative braking applications.
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. Use it when assembling structural or mechanical joints to avoid under- or over-tightening.
Beam Deflection Calculator
Determine the maximum deflection of a simply supported beam under a concentrated point load. Use this when sizing structural beams to ensure they stay within allowable deflection limits.
Spring Rate Calculator
Compute the spring rate (stiffness) of a helical compression spring from its wire and coil geometry. Use this during spring selection or custom spring design to match a required force-deflection characteristic.
Pressure Vessel Wall Thickness Calculator
Calculate the minimum required wall thickness for a cylindrical pressure vessel shell under internal pressure, per the thin-wall design formula with a corrosion allowance. Essential for ASME-code vessel design and safety verification.
Shaft Torque and Stress Calculator
Determine the safe torque capacity and shear stress in a rotating shaft. Use this when designing drive shafts, axles, or couplings to ensure they won't fail under torsional load.
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. Use this when selecting a pump motor or auditing energy consumption in a piping system.
Rolling Bearing Life Calculator
Estimate how long a rolling bearing will last under real operating conditions. Enter load ratings, speed, and reliability factor to get predicted bearing life in hours.
Heat Exchanger Effectiveness Calculator
Calculate the actual heat transfer rate of a heat exchanger using the effectiveness-NTU method. Useful for sizing or evaluating shell-and-tube, plate, or counterflow heat exchangers.