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

114

Topics: All Mechanics (114) Electricity (48)

Physics / Mechanics

Coefficient of Restitution from Pre/Post-Collision Velocities Calculator

Compute the dimensionless coefficient of restitution e (a measure of energy lost in a collision) from the pre- and post-...

basic

13,300 4.6 1 min

Physics / Mechanics

Parallel-Axis Theorem Calculator

Compute the moment of inertia of a rigid body about an axis parallel to its centre-of-mass axis, using the parallel-axis...

basic

4,165 4.1 1 min

Physics / Mechanics

Mass-Spring Angular Frequency Calculator

Compute the natural angular frequency ω, ordinary frequency f, and period T of a Hookean mass-spring oscillator: ω = √(k...

basic

2,340 3.8 1 min

Physics / Mechanics

Pendulum Length from Desired Period Calculator

Compute the length needed for a simple pendulum to swing with a desired period (small-angle approximation): L = T² · g /...

basic

21,983 4.7 1 min

Physics / Mechanics

Angular-Momentum Conservation: Final ω from I₁ω₁ = I₂ω₂ Calculator

When no external torque acts, angular momentum I·ω is conserved. Given an initial moment of inertia I₁ and angular veloc...

basic

14,762 4.5 1 min

Physics / Mechanics

Radioactive Decay Remaining Mass Fraction Calculator

Compute the fraction of an unstable isotope remaining after time t given the half-life t½: fraction = exp(−ln(2) · t / t...

basic

5,872 4.1 1 min

Physics / Mechanics

Simple Harmonic Motion Period (Mass-Spring) Calculator

Compute the period and frequency of a mass-spring oscillator undergoing simple harmonic motion from the mass m and sprin...

basic

24,544 4.5 1 min

Physics / Mechanics

Rolling Resistance Force from Load and Coefficient Calculator

Computes rolling resistance force F_r = C_rr · N, where C_rr is the dimensionless rolling resistance coefficient and N i...

basic

23,746 4.6 1 min

Physics / Mechanics

Apparent Weight in an Accelerating Elevator Calculator

Compute the apparent weight (the normal force read by a bathroom scale) of a person in an elevator that is accelerating:...

basic

15,040 4.4 1 min

Physics / Mechanics

Compound (Physical) Pendulum Period Calculator

Compute the small-amplitude oscillation period of a compound (physical) pendulum: a rigid body that rotates about a hori...

basic

11,256 4.4 1 min

Physics / Mechanics

Wedge Mechanical Advantage Calculator

Compute the ideal mechanical advantage of a wedge from its slope length L (the distance the wedge is driven) and its thi...

basic

8,640 4.3 1 min

Physics / Mechanics

Banked-Curve No-Friction Speed Calculator

Compute the design speed (no friction needed) at which a vehicle can traverse a banked curve of given radius and bank an...

basic

2,785 4.8 1 min

Physics / Mechanics

Torque from Force and Lever Arm Calculator

Compute the torque produced by a force applied to a lever arm at an angle: τ = F · r · sin θ. Reports the torque in N·m,...

basic

20,569 4.0 1 min

Physics / Mechanics

Solid Cylinder Moment of Inertia Calculator

Compute the moment of inertia of a uniform solid cylinder (or disc) about its central long axis: I = ½ · M · R². Also re...

basic

16,257 4.3 1 min

Physics / Mechanics

Sound Intensity Level (Decibels) from Intensity Calculator

Compute the sound intensity level β (in decibels) from a sound's physical intensity I (W/m²) referenced to the threshold...

basic

12,495 5.0 1 min

Physics / Mechanics

Projectile Maximum Height from Launch Angle and Speed Calculator

Compute the apex height a projectile reaches when launched at speed v₀ and angle θ above flat ground (no air resistance)...

basic

12,026 4.2 1 min

Physics / Mechanics

Work-Energy Theorem Calculator

Apply the work-energy theorem: the net work done on a particle equals the change in its kinetic energy: W_net = ½·m·(v_f...

basic

11,851 4.6 1 min

Physics / Mechanics

Spring Elastic Potential Energy Calculator

Compute the elastic potential energy stored in a Hookean spring stretched (or compressed) by a displacement x from its n...

basic

16,616 4.2 1 min

Physics / Mechanics

Standing-Wave Fundamental Frequency on a String Calculator

Compute the fundamental frequency f₁ and the first two overtones of a stretched string fixed at both ends from the strin...

basic

16,271 4.1 1 min

Physics / Mechanics

Open Organ Pipe Fundamental Frequency Calculator

Compute the fundamental (lowest) frequency of a cylindrical organ pipe (or open-ended flute) with both ends open from th...

basic

12,956 4.0 1 min

Physics / Mechanics

Spherical Wave Intensity (Inverse-Square) Calculator

Compute the wave-power intensity at distance r from an isotropic point source emitting total power P: I = P / (4π · r²)....

basic

4,872 4.7 1 min

Physics / Mechanics

Newton's Gravitational Force Calculator

Compute the gravitational attraction between two point masses (or spherical bodies) at a centre-to-centre distance r, us...

basic

10,695 4.4 1 min

Physics / Mechanics

Drag Force from Coefficient, Fluid Density, Area, and Velocity Calculator

Calculates drag force F_d = ½ · ρ · v² · C_d · A, where ρ is fluid density, v is velocity, C_d is drag coefficient, and...

basic

18,272 3.8 1 min

Physics / Mechanics

1D Elastic Collision Calculator

Compute the post-collision velocities of two bodies undergoing a one-dimensional elastic collision, conserving both kine...

basic

14,299 4.5 1 min

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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

Coefficient of Restitution from Pre/Post-Collision Velocities Calculator

Parallel-Axis Theorem Calculator

Mass-Spring Angular Frequency Calculator

Pendulum Length from Desired Period Calculator

Angular-Momentum Conservation: Final ω from I₁ω₁ = I₂ω₂ Calculator

Radioactive Decay Remaining Mass Fraction Calculator

Simple Harmonic Motion Period (Mass-Spring) Calculator

Rolling Resistance Force from Load and Coefficient Calculator

Apparent Weight in an Accelerating Elevator Calculator

Compound (Physical) Pendulum Period Calculator

Wedge Mechanical Advantage Calculator

Banked-Curve No-Friction Speed Calculator

Torque from Force and Lever Arm Calculator

Solid Cylinder Moment of Inertia Calculator

Sound Intensity Level (Decibels) from Intensity Calculator

Projectile Maximum Height from Launch Angle and Speed Calculator

Work-Energy Theorem Calculator

Spring Elastic Potential Energy Calculator

Standing-Wave Fundamental Frequency on a String Calculator

Open Organ Pipe Fundamental Frequency Calculator

Spherical Wave Intensity (Inverse-Square) Calculator

Newton's Gravitational Force Calculator

Drag Force from Coefficient, Fluid Density, Area, and Velocity Calculator

1D Elastic Collision Calculator