Physics calculators

Kinematics, dynamics, and classical-physics shortcuts.

Solve the common physics textbook calculations — velocity, acceleration, force, and energy — with units correctly tracked end to end.

Calculators

372

Topics: All Mechanics (114) Electricity (48)

Physics

Moving Source Stationary Observer Sound Frequency Calculator

Calculates the observed frequency heard by a stationary observer when a sound source is moving towards or away from them...

basic

15,397 4.2 1 min

Physics / Mechanics

Perfectly Inelastic Collision Calculator

Compute the common final velocity of two bodies after a perfectly inelastic 1D collision (they stick together), using co...

basic

14,749 4.9 1 min

Physics / Mechanics

Circular Orbit Period from Radius and Central Mass Calculator

Calculates orbital period T = 2π√(r³/GM), orbital velocity v = √(GM/r), and centripetal acceleration for a circular orbi...

basic

11,750 4.7 1 min

Physics

Kepler's Third Law Orbital Period Calculator

Calculates the orbital period of a satellite or planet using Kepler's third law given the semi-major axis and central bo...

basic

11,404 4.3 1 min

Physics / Mechanics

Elastic Spring Energy & Extension Calculator

Calculates the elastic potential energy stored in a spring and the restoring force using Hooke's Law from spring constan...

basic

9,790 4.1 1 min

Physics

Electron Kinetic Energy from Accelerating Voltage Calculator

Calculates KE = q·V for a particle accelerated through potential difference V. For an electron, q = 1.602×10⁻¹⁹ C. Also...

basic

8,166 4.3 1 min

Physics / Mechanics

Terminal Velocity Calculator

Compute the terminal velocity of a falling object in a fluid (typically air) when drag balances gravity, using v_t = √(2...

basic

6,519 3.8 1 min

Physics

Terminal Velocity from Weight and Drag Calculator

Computes terminal velocity v_t = √(2mg / (ρ · A · C_d)), the speed at which drag equals weight and acceleration is zero.

basic

1,418 4.0 1 min

Physics / Mechanics

Angular Momentum from Moment of Inertia and Angular Velocity Calculator

Calculates angular momentum L = I · ω, where I is the moment of inertia (kg·m²) and ω is angular velocity (rad/s). Also...

basic

24,978 4.1 1 min

Physics

Doppler Effect Observed Frequency Calculator

Calculates the observed frequency of a sound or wave due to the Doppler effect from source and observer velocities.

basic

24,503 4.4 1 min

Physics

Hydrogen Atom Energy Level from Principal Quantum Number Calculator

Calculates the energy level E_n = −13.6 eV / n² for hydrogen and the energy of a photon emitted/absorbed in a transition...

basic

23,917 4.6 1 min

Physics

Fiber Optic Numerical Aperture and Acceptance Angle Calculator

Calculates the Numerical Aperture (NA) and maximum acceptance angle of an optical fiber from the refractive indices of c...

basic

23,396 4.0 1 min

Physics / Mechanics

Gravitational Potential Energy Between Two Masses Calculator

Calculates gravitational potential energy U = −G·M·m/r and gravitational force F = G·M·m/r² between two point masses sep...

basic

22,250 4.7 1 min

Physics / Mechanics

Telescope Magnification Calculator

Compute the magnification of a telescope from the focal lengths of the objective lens (or mirror) and the eyepiece, plus...

basic

20,163 3.9 1 min

Physics / Mechanics

Projectile Motion Range & Apex Calculator

Calculates the range, maximum height, and time of flight of a projectile launched at an angle from horizontal, ignoring...

basic

4,678 3.9 1 min

Physics

Vis-Viva Elliptical Orbit Velocity Calculator

Compute the orbital speed at distance r from the central body for an elliptical orbit of semi-major axis a, using the vi...

basic

3,419 4.8 1 min

Physics

Electric Field from Point Charge Calculator

Computes the electric field magnitude at a distance r from a point charge Q using Coulomb's constant.

basic

1,126 4.8 1 min

Physics

Wave Speed from Frequency and Wavelength Calculator

Calculates wave speed v = f·λ, and solves for any missing variable. Includes period T = 1/f and wavenumber k = 2π/λ.

basic

21,870 4.8 1 min

Physics

Telescope Angular Magnification and Resolving Power Calculator

Calculates telescope angular magnification and minimum resolvable angle using the Rayleigh criterion. Larger aperture an...

basic

19,159 4.1 1 min

Physics / Mechanics

Centripetal Force & Circular Orbit Calculator

Calculates centripetal force, centripetal acceleration, and orbital speed needed for uniform circular motion from mass,...

basic

12,060 4.8 1 min

Physics

Capacitor Energy Stored Calculator

Calculates energy stored in a capacitor from capacitance and voltage, along with charge stored Q = CV.

basic

11,626 3.9 1 min

Physics / Mechanics

Flywheel Rotational Kinetic Energy from Mass, Radius, and RPM Calculator

Calculates the kinetic energy stored in a solid-disc flywheel: KE_rot = ½·I·ω² = ¼·m·r²·ω², where ω = 2π·RPM/60.

basic

9,282 4.6 1 min

Physics

Ampere Force on a Current-Carrying Wire Calculator

Calculates the magnetic force on a straight current-carrying conductor in an external magnetic field from current, lengt...

basic

5,108 4.9 1 min

Physics / Mechanics

Escape Velocity from Planet Surface Calculator

Calculates escape velocity v_esc = √(2GM/R) and the corresponding kinetic energy needed per kg of payload. For Earth: M...

basic

2,256 3.9 1 min

Showing 121 to 144 of 372 results

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Solve the common physics textbook calculations — velocity, acceleration, force, and energy — with units correctly tracked end to end.

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Physics calculators

Moving Source Stationary Observer Sound Frequency Calculator

Perfectly Inelastic Collision Calculator

Circular Orbit Period from Radius and Central Mass Calculator

Kepler's Third Law Orbital Period Calculator

Elastic Spring Energy & Extension Calculator

Electron Kinetic Energy from Accelerating Voltage Calculator

Terminal Velocity Calculator

Terminal Velocity from Weight and Drag Calculator

Angular Momentum from Moment of Inertia and Angular Velocity Calculator

Doppler Effect Observed Frequency Calculator

Hydrogen Atom Energy Level from Principal Quantum Number Calculator

Fiber Optic Numerical Aperture and Acceptance Angle Calculator

Gravitational Potential Energy Between Two Masses Calculator

Telescope Magnification Calculator

Projectile Motion Range & Apex Calculator

Vis-Viva Elliptical Orbit Velocity Calculator

Electric Field from Point Charge Calculator

Wave Speed from Frequency and Wavelength Calculator

Telescope Angular Magnification and Resolving Power Calculator

Centripetal Force & Circular Orbit Calculator

Capacitor Energy Stored Calculator

Flywheel Rotational Kinetic Energy from Mass, Radius, and RPM Calculator

Ampere Force on a Current-Carrying Wire Calculator

Escape Velocity from Planet Surface Calculator