Physics Calculators
Instant, accurate physics calculations with step-by-step explanations. Built for students, educators, and curious minds — free forever.
Featured Calculators
The tools our readers use most — complete with formulas and worked examples.
Kinematic Calculator
Solve any linear motion problem — find velocity, displacement, acceleration, or time from SUVAT equations. Ideal for projectile and free-fall problems.
Open Calculator →Ohm’s Law Calculator
Enter any two of voltage (V), current (I), or resistance (R) — instantly finds the third. Also calculates power dissipation. Perfect for circuit design.
Open Calculator →All Calculators
Growing library — more tools added every month based on reader requests.
Kinematic Calculator
Solve SUVAT equations for linear motion. Find any unknown when given three values — covers velocity, displacement, acceleration, and time.
Ohm’s Law Calculator
Enter any two of voltage, current, or resistance — solves for the third instantly. Also calculates all four power formulas.
Wave Calculator
Calculate wave speed, frequency, wavelength, and period. Includes speed of light and sound presets for electromagnetic and mechanical waves.
Newton’s Second Law Calculator
Calculate force, mass, or acceleration instantly using Newton’s Second Law of Motion. Ideal for mechanics and motion problems.
Thermodynamics Calculator
Heat, work, internal energy, and efficiency for thermodynamic processes — ideal gas law, Carnot efficiency, and specific heat capacity.
Gravitational Force Calculator
Calculate gravitational attraction between two masses. Newton’s universal gravitation — planetary orbits, surface gravity, and escape velocity.
- v = u + atFinal velocity — SUVAT (Kinematics)
- V = IROhm’s Law — Voltage, Current, Resistance
- v = fλWave speed = frequency × wavelength
- F = maNewton’s Second Law of Motion
- E = mc²Mass-energy equivalence (Einstein)
- P = VIElectrical power dissipation
💡 How to Use
- Enter known values in the input fields
- Select the correct units from the dropdown
- Click Calculate — results show instantly
- Read the step-by-step solution below
- Reset for a new problem anytime
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Request a Tool →Want to understand the theory behind these formulas?
Our in-depth articles explain every equation — with diagrams, proofs, and real-world examples.