Physics calculators
50 calculators
Physics calculators rearrange textbook relations for mechanics and related topics. Inputs must use the units printed on each field.
These are idealised models. Friction, drag, and material limits are omitted unless a page includes them in the formula. Physics pages need no login; math runs in the browser.
Mechanics calculators
Force, motion, energy, momentum, and related first-year mechanics.
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Acceleration Calculator
Average acceleration from change in velocity and time.
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Angular Velocity Calculator
Compute average angular velocity ω = θ / t.
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Displacement (distance traveled) Calculator
1D displacement under constant acceleration: s = u t + ½ a t².
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Force Calculator
Newton's second law: F = m a.
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Free Fall Calculator
Distance and impact speed for free fall from rest: s = ½ g t², v = g t.
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Friction Calculator
Kinetic/static friction magnitude F = μ N.
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Gravitational Force Calculator
Newton's law of universal gravitation between two masses.
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Impulse and Momentum Calculator
Impulse J = F t = m Δv and resulting final velocity.
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Kinetic Energy Calculator
Translational kinetic energy KE = ½ m v².
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Magnitude Of Acceleration Calculator
Absolute value of average acceleration |Δv / Δt|.
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Moment Of Inertia Calculator
Solid cylinder/disk about central axis: I = ½ m r² (workbook capitalization).
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Newton's Second Law Calculator
Compute force from mass and acceleration (F = ma).
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Normal Force Calculator
Normal force on a mass on an incline: N = mg cosθ.
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Period Pendulum Calculator
Small-angle simple pendulum period T = 2π √(L/g).
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Potential Energy Calculator
Gravitational potential energy PE = m g h.
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Reduced Mass Calculator
Two-body reduced mass μ = m₁ m₂ / (m₁ + m₂).
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Rotational Kinetic Energy Calculator
Rotational kinetic energy KE = ½ I ω².
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Velocity Calculator
Average velocity v = d / t.
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Work Calculator
Mechanical work W = F d cosθ.
Fluids and materials calculators
Pressure, flow, density, stress, strain, and buoyancy.
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Bernoulli Equation Calculator
Solve for downstream pressure P₂ along a streamline.
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Buoyancy Calculator
Buoyant force F_b = ρ V g (Archimedes).
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Cylindrical Pipe Flow Rate Calculator
Volumetric flow Q = π r² v for a full circular pipe (workbook name).
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Density Calculator
Density ρ = m / V.
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Drag Equation Calculator
Quadratic drag force F_d = ½ ρ v² C_d A.
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Froude Number Calculator
Froude number Fr = v / √(g L).
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Hydraulic Pressure Calculator
Fluid pressure from force on a piston area.
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Hydraulic Radius Calculator (Full Pipe)
Full circular pipe hydraulic radius R_h = D/4 (workbook name).
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Hydrostatic Pressure Calculator
Pressure at depth: P = ρ g h.
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Knudsen Number Calculator
Knudsen number Kn = λ / L.
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Poisson's Ratio Calculator
Poisson's ratio ν = −ε_lateral / ε_axial.
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Pressure Calculator
Pressure as force over area, P = F / A.
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Strain Calculator
Engineering strain ε = ΔL / L₀.
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Stress Calculator
Engineering stress σ = F / A.
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Velocity Stack Calculator
Quarter-wave intake length from RPM, stroke, and harmonic order.
Electricity calculators
Ohm’s law, power, capacitance, and series/parallel resistance.
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Capacitance Calculator
Capacitance from charge and voltage: C = Q/V.
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Electric Power Calculator
Power from voltage and current: P = V I.
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Ohm's Law Calculator
Solve for voltage, current, or resistance with Ohm's law.
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Series Parallel Resistance Calculator
Equivalent resistance series and parallel for up to 3 resistors.
Waves and optics calculators
Wavelength, refraction, polarization, and aperture.
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Angular Resolution Calculator
Diffraction-limited angular resolution θ ≈ 1.22 λ / D.
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Aperture Area Calculator
Area of a circular aperture from its diameter.
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Brewster's Angle Calculator
Polarizing angle θ_B = arctan(n₂ / n₁).
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Frequency Wavelength Calculator
Convert frequency ↔ wavelength (mode 0: f→λ, 1: λ→f).
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Index Of Refraction Calculator
Refractive index n = c / v (workbook capitalization).
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Malus Law Calculator
Transmitted intensity I = I₀ cos²θ through a polarizer.
Other calculators
Relativity demos and one-off physics relations.
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E = mc² Calculator
Mass–energy equivalence E = m c² (workbook: E = mc²).
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Hooke's Law Calculator
Spring force F = k x.
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Ideal Gas Calculator
Ideal gas law (SI). Solve for P, V, n, or T.
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Length Contraction Calculator
Relativistic length contraction L = L₀ √(1 − v²/c²).
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Lightning Distance Calculator
Estimate storm distance from thunder delay using the speed of sound.
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Mach Number Calculator
Mach number M = v / a.