Mechanics Calculator

  • Radius of Gyration Calculator
    Calculate the radius of gyration k from moment of inertia and mass (k=āˆš(I/m)) or area (k=āˆš(I/A)). Free, instant, with worked example and formula.
  • Parallel Axis Theorem Calculator
    Calculate moment of inertia about any parallel axis using the parallel axis theorem I = I_cm + mĀ·dĀ². Enter I_cm, mass, and axis distance.
  • Moment of a Force Calculator
    Calculate the moment of a force (torque) instantly with M = FĀ·d. Enter force in newtons and perpendicular distance in metres to get NĀ·m.
  • Vertical Jump Height Calculator
    Calculate your vertical jump height from hang time using physics. Enter your air time in seconds to get jump height in cm, meters, and inches.
  • Work Calculator (W = Fs)
    Solve the physics work equation W = F.s, or W = F.s.cos(theta), for work, force, or displacement. Multiple units and significant-figure control.
  • Velocity Calculator (vĀ² = uĀ² + 2as)
    Solve the kinematic equation vĀ² = uĀ² + 2as for final velocity, initial velocity, acceleration, or displacement. Multiple units and significant-figure control.
  • Kinetic Energy Calculator
    Solve the kinetic energy equation KE = 1/2 m v^2 for kinetic energy, mass, or velocity. Supports many units (J, kJ, kWh, kg, lb, m/s, km/h) with auto conversion.
  • Uniformly Accelerated Motion Calculator
    Solve 1D constant-acceleration (SUVAT) motion. Enter any 3 of u, v, s, a, t and get the other two, with the kinematic equations used and unit conversion.
  • Velocity Calculator (v = u + at)
    Solve v = u + at for final velocity, initial velocity, acceleration, or time. Supports m/s, km/h, mph, knots and more with automatic unit conversion.
  • Pressure Calculator (P = F / A)
    Solve pressure, force, or area with P = F / A. Enter any two values with their own units (Pa, bar, psi, atm, N, lbf, m2, in2) and get the third instantly.
  • Momentum Calculator (p = mv)
    Solve linear momentum p = mĀ·v for momentum, mass, or velocity with selectable units (kg, g, lb, m/s, km/h, NĀ·s and more) and significant-figure control.
  • Impulse Calculator (J = Ft)
    Solve the impulse equation J = F·t for impulse, force, or time. Supports many force, time and impulse units plus significant-figure rounding.
  • Force Calculator (F = ma)
    Solve Newton's second law F = m a for force, mass, or acceleration. Full unit selection on every variable plus significant-figure control.
  • Displacement, Velocity & Time Calculator
    Solve s = v x t for displacement, average velocity, or time. Supports metric and imperial units (m, ft, mi, km/h, mi/h) with significant-figure rounding.
  • Momentum Unit Converter
    Convert momentum (impulse) between kgĀ·m/s, NĀ·s, dyneĀ·s, kNĀ·s, MNĀ·s, lbfĀ·s and poundĀ·ft/s. Enter a value, pick from/to units, get an instant result and factor.
  • Stefan-Boltzmann Radiation Calculator
    Calculate thermal radiation power with the Stefan-Boltzmann law P = ĪµĻƒATā“. Enter emissivity, surface area and absolute temperature to get watts radiated.
  • Hull Speed Calculator
    Calculate the theoretical hull speed of a displacement boat from its waterline length (LWL) in feet. Get results in knots, mph, and km/h instantly.
  • Human Punch Force Calculator
    Calculate human punch force in newtons, pounds-force and kgf using fist mass, impact velocity and contact time with the impulse-momentum formula.
  • Torque Unit Conversion Calculator
    Convert torque (moment of force) between 12 units across metric SI, gravitational-metric and imperial systems: N.m, kgf.m, lbf.ft, ozf.in and more.
  • Period and Frequency Calculator
    Convert between period and frequency instantly. Compute T = 1/f or f = 1/T plus angular frequency for any wave or oscillation.
  • Density Calculator
    Calculate density from mass and volume using Ļ = m / V. Get results in kg/mĀ³ and g/cmĀ³ instantly. Free, accurate physics density calculator.
  • Thermal Efficiency Calculator
    Calculate the thermal efficiency of a heat engine from heat input and rejected heat. Get Ī· as a fraction and percent, plus net work output.
  • Thermal Conductivity Calculator
    Calculate thermal conductivity k from heat transferred, thickness, area, temperature difference and time using Fourier's law of heat conduction.
  • Thermal Diffusivity Calculator
    Calculate thermal diffusivity (Ī±) from thermal conductivity, density, and specific heat using Ī± = k / (Ļ Ɨ cp). Results in mĀ²/s and mmĀ²/s.

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