Physics Calculators
Mechanics, motion, fluids, heat, optics, electricity.
A full Physics suite — velocity, acceleration, force, momentum, work, power, energy, free fall, projectile & circular motion, pressure, density, buoyancy, hydrostatic pressure, heat, specific heat, thermal expansion, efficiency, lens & mirror equations, refractive index, Coulomb's law, electric field, and capacitance. CODATA 2018 constants, offline-first.
Popular
Most used in Physics.
Velocity Calculator
v = d / t.
Acceleration Calculator
a = Δv / Δt.
Distance Calculator
d = v·t + ½·a·t².
Time Calculator
t = d / v.
Force Calculator
F = m·a.
Momentum Calculator
p = m·v.
Work Calculator
W = F·d·cosθ.
Power Calculator
P = W / t.
New
Recently added.
Capacitance Calculator
C = Q / V.
Electric Field Calculator
E = F / q.
Coulomb's Law Calculator
F = k·q₁·q₂ / r².
Refractive Index Calculator
Snell's law refractive index.
Mirror Calculator
Mirror equation.
Lens Calculator
1/f = 1/dₒ + 1/dᵢ.
Efficiency Calculator
η = P_out / P_in · 100.
Thermal Expansion Calculator
ΔL = L₀·α·ΔT.
All Physics Calculators
32 tools available.
Acceleration Calculator
a = Δv / Δt.
Coulomb's Law Calculator
F = k·q₁·q₂ / r².
Density Calculator
ρ = m / V.
Energy Calculator
Total mechanical energy KE + PE.
Force Calculator
F = m·a.
Free Fall Calculator
Free-fall distance and impact velocity.
Heat Calculator
Q = m·c·ΔT.
Kinetic Energy Calculator
KE = ½·m·v².
Power Calculator
P = W / t.
Pressure Calculator
P = F / A.
Projectile Motion Calculator
Range, max height, and flight time.
Velocity Calculator
v = d / t.
FAQ
About Physics Calculators.
Which unit system do the calculators use?
SI throughout — metres, kilograms, seconds, newtons, joules, pascals, volts. Where mixed units are common (rpm, degrees, cm optics) the input labels state the unit explicitly.
What value of g do you use?
Standard gravity g = 9.80665 m/s² by default, editable per calculator so you can model any planet or elevation.
How precise are the results?
Physical constants are CODATA 2018. Results are formatted with 4–6 significant figures and switch to scientific notation for very small or very large magnitudes.
Do these calculators require an internet connection?
No — every physics engine is pure JavaScript running in your browser. Nothing is uploaded, cached, or logged.
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