Calculate force, energy, kinematics, and power in physics
Solve common physics problems without rearranging formulas by hand. Choose a topic, kinematics, forces, energy, waves, electricity, or optics, enter the known quantities, and the calculator solves for the unknowns. Units are handled automatically so you can focus on understanding the physics rather than the algebra.
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A free-fall problem: an object dropped from rest, how fast is it moving after 3 seconds?
Inputs
u = 0 m/s, a = 9.8 m/s², t = 3 s (use v = u + at)
Result
v = 0 + 9.8 × 3 = 29.4 m/s
Picking the right kinematic equation for the known quantities is most of the difficulty; the tool lets you choose the relationship and solve for any variable while keeping units consistent. It spans kinematics, forces, energy, and circuits with the same approach.
Solve common physics problems without rearranging formulas by hand. Choose a topic, kinematics, forces, energy, waves, electricity, or optics, enter the known quantities, and the calculator solves for the unknowns. Units are handled automatically so you can focus on understanding the physics rather than the algebra.
Plug in known values and let the tool isolate the unknown instead of rearranging equations manually.
Cross-check experimental results against theoretical predictions using the same formulas.
Practice a variety of problems across topics and verify solutions instantly.
Get ballpark answers for force, energy, or electrical values during early-stage design.
Demonstrate how changing one variable affects others in a live classroom setting.
Set initial velocity = 0, acceleration = 9.8 m/s², displacement = 20 m. The solver returns t ≈ 2.02 s.
Enter voltage = 12 V, resistance = 4 Ω, and find current = 3 A.
Each physics module stores the relevant equations and can solve for any variable when the others are provided. Kinematics covers constant-acceleration motion in one dimension. Force calculations include Newton's second law, friction, and gravitational force. The energy module handles kinetic energy, potential energy, and work-energy relationships. Wave calculations cover frequency, wavelength, and wave speed. Electrical modules address Ohm's law, power, and series/parallel resistance. All inputs accept SI units, and results are displayed with appropriate significant figures.
Enter values in SI units (meters, kilograms, seconds, etc.) for consistent results.
Yes. Leave the target variable blank and fill in the rest, the solver rearranges the equation for you.
One-dimensional constant-acceleration kinematics is fully supported. For 2D projectile motion, solve the horizontal and vertical components separately.
Every calculation runs locally in your browser. Your numbers and expressions are not transmitted or stored.