Calculate force, energy, kinematics, and power in physics
Solve common physics problems without rearranging formulas by hand. Choose a topic - force, energy, kinematics, power, momentum, gravity, projectile motion, Ohm's law, waves, pendulum, or thermodynamics - enter the known quantities in SI units, and the calculator computes the result. Inputs are assumed to be in SI units (meters, kilograms, seconds, etc.).
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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 - force, energy, kinematics, power, momentum, gravity, projectile motion, Ohm's law, waves, pendulum, or thermodynamics - enter the known quantities in SI units, and the calculator computes the result. Inputs are assumed to be in SI units (meters, kilograms, seconds, etc.).
Each module applies the standard formula for its topic. Force uses Newton's second law (F = ma). Energy covers kinetic energy, gravitational potential energy, and related work-energy quantities. Kinematics handles constant-acceleration motion. Momentum combines two masses and velocities. Gravity applies Newton's law of universal gravitation. Projectile motion is a full two-dimensional calculation returning maximum height, range, time of flight, and the horizontal and vertical velocity components from a launch speed and angle. Ohm's law solves for V, I, or R; waves relate frequency, wavelength, and speed; the pendulum module finds the period from length and gravity; and thermodynamics computes heat from mass, specific heat, and temperature change. Results are formatted to a sensible number of significant figures.
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.
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.
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.
Yes. The Projectile Motion mode takes a launch speed and angle (and optional initial height) and returns the maximum height, range, time of flight, and the horizontal and vertical velocity components.
Every calculation runs locally in your browser. Your numbers and expressions are not transmitted or stored.