Mechanics Calculator

  • Projectile Motion Trajectory Calculator
    Compute projectile trajectory without air resistance: height and distance over time, plus time of flight, maximum height and range from initial speed and launch angle.
  • Lift Coefficient Calculator
    Calculate the lift coefficient (CL) from lift force, air density, velocity and wing area using CL = 2L / (ρ·v²·A). Free aerodynamics tool.
  • Magnus Force Calculator
    Calculate the Magnus force on a spinning ball from air density, velocity, ball radius and lift coefficient using F = ½·ρ·v²·A·CL.
  • Distance & Time to Speed Calculator
    Calculate speed easily with distance and time inputs. Convert your journey details into velocity measurements for accurate travel planning and analysis.
  • Electric Motor Torque Calculator
    Calculate electric motor torque in N·m and lb·ft from power (kW) and speed (RPM) using T = P / (2πN/60). Free, instant, and accurate.
  • Kinetic Energy Calculator
    Calculate kinetic energy fast: enter mass (kg) and velocity (m/s) to get energy in joules (J). Ideal for physics problems, labs, and quick checks.
  • Nm to Joules Calculator
    Convert newton-metres (N·m) to joules (J) instantly. Since 1 N·m of work equals exactly 1 joule of energy, this calculator gives a direct 1:1 result.
  • Buoyant Force Calculator
    Calculate buoyant force from fluid density, displaced volume, and gravity using Archimedes' principle (Fb = ρgV). Free, instant, with worked example.
  • Bulk Modulus Calculator
    Calculate the bulk modulus (K) of a material from pressure change, initial volume, and volume change using K = -V·(ΔP/ΔV). Free physics tool.
  • Servo Torque Calculator
    Estimate servo torque from operating voltage, current, and speed (RPM). Uses electrical power and RPM to compute torque for quick motor sizing.
  • Torsion Spring Calculator
    Calculate the torsional spring rate of a helical torsion spring from wire diameter, coil diameter, active coils, and modulus of elasticity.
  • Spring Rate Calculator
    Calculate the spring rate (spring constant) of a helical compression coil spring from shear modulus, wire diameter, coil diameter and active coils.
  • Speeds and Feeds Calculator
    Free speeds and feeds calculator for CNC milling and machining. Enter SFM, tool diameter, chip load and flutes to find spindle RPM and feed rate (IPM).
  • Pump Horsepower Calculator
    Calculate pump brake horsepower (BHP) and hydraulic horsepower from flow rate (GPM), total head, specific gravity, and efficiency.
  • Pulley Calculator
    Free pulley calculator using D1×N1 = D2×N2. Solve driver/driven pulley diameter, speed (RPM), or belt speed ratio by entering any three values.
  • Gravitational Force Calculator
    Calculate gravitational force between two objects with this Gravitational Force Calculator. Input masses and distance to determine the attraction force instantly.
  • Linear Actuator Force Calculator
    Calculate the output force of a hydraulic or pneumatic linear actuator from operating pressure and piston bore diameter. Get results in N, kgf and lbf.
  • Buckling Load (Euler) Calculator
    Calculate the Euler critical buckling load of a column from modulus E, moment of inertia I, length L and end condition factor K. Free engineering tool.
  • Mean Piston Speed Calculator
    Calculate mean piston speed (MPS) from stroke and RPM. Enter stroke in mm and engine speed to get piston speed in m/s and ft/min instantly.
  • Piston Force Calculator
    Calculate piston force from pressure and bore diameter using F = P × (π/4) × D². Supports SI (Pa, m → N) and Imperial (psi, in → lbf) units.
  • Lever Calculator
    Solve any lever problem using the law of moments. Enter three values to find effort, load, or arm length plus mechanical advantage.
  • Mechanical Advantage Calculator
    Calculate mechanical advantage (MA) from output force (load) and input force (effort). Free, instant MA calculator for levers, pulleys and machines.
  • Fulcrum Calculator
    Free fulcrum calculator using the law of the lever (F1 × d1 = F2 × d2). Solve for an unknown force or distance to balance a lever about a fulcrum.
  • BSFC (Brake Specific Fuel Consumption) Calculator
    Calculate Brake Specific Fuel Consumption (BSFC) from fuel consumption rate and power output. Get results in kg/(kW·h) and g/(kW·h) instantly.

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