Pulley Calculator
Calculate pulley effort, mechanical advantage, rope travel, and work
Machines and Mechanisms Calculators
Discover free, easy-to-use Machines and Mechanisms in our Physics collection. Find the right calculator, simplify complex calculations, understand your results, and export them for use and citation in project reports and research.
Pump Horsepower Calculator
Estimate hydraulic, shaft, and motor power for pumps
Twist Rate Calculator
Determine twist rate from rotational and linear speeds
Crawl Ratio Calculator
Measure drivetrain reduction, wheel torque, and low-speed vehicle capability
Carburetor CFM Calculator
Estimate ideal carburetor airflow for performance engine sizing
Lever Calculator
Calculate lever forces, mechanical advantage, efficiency, and torque
Shaft Size Calculator
Determine solid shaft diameter from torque, bending, and allowable stress.
Linear Actuator Force Calculator
Calculate actuator force, torque, power, and mechanical requirements
Belt Length Calculator
Estimate belt length from pulley diameters and center distance
Piston Force Calculator
Calculate piston extension and retraction forces accurately
Piston Speed Calculator
Determine mean piston speed from stroke length and RPM
Fulcrum Calculator
Determine lever forces, torque, mechanical advantage, and efficiency easily.
Gear Ratio Calculator
Calculate gear ratios, speeds, torque, power, and efficiency
NPSH Calculator – Net Positive Suction Head
Calculate available, required, and safety margin NPSH values
BMEP Calculator (Brake Mean Effective Pressure Calculator)
Calculate brake mean effective pressure from torque and displacement
Engine Displacement Calculator
Calculate total engine displacement from bore, stroke, and cylinders
Torsion Spring Calculator
Analyze torque, stress, geometry, energy, and performance of torsion springs
Speeds and Feeds Calculator
Calculate optimal machining speeds, feeds, power, and material removal
Transmission Calculator
Calculate output torque, speed, and power through mechanical transmissions
Spring Calculator
Calculate spring rate, force, energy, stress, and dimensions
Spring Rate Calculator
Calculate spring stiffness, deflection, and design characteristics from geometry
Spring Rate Converter
Convert spring stiffness values across common engineering measurement scales accurately
Wing Loading Calculator
Determine aerodynamic wing loading from aircraft weight and wing area
Exhaust Diameter Calculator
Estimate exhaust pipe diameter from engine airflow and operating conditions
Mechanical Advantage Calculator
Calculate actual and ideal mechanical advantage plus machine efficiency accurately
Diametral Pitch Calculator
Calculate gear diametral pitch, module, and circular pitch
Prop Pitch Calculator
Calculate propeller pitch from speed, RPM, gearing, and slip
Prop Slip Calculator
Estimate propeller slip from pitch, rotation, and boat speed
