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c=λf  ν  E=hν

Waves and Optics Calculators

43 free online tools for waves, sound, frequency, wavelength, light, motion, forces, energy, and structural mechanics. Calculate physical relationships quickly with clear formulas and reliable results.

Wave Basics

∿

Wave Calculator

Calculate basic wave properties including speed, frequency, and wavelength.

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v

Wave Speed Calculator

Calculate wave propagation speed from frequency and wavelength.

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f

Frequency Calculator

Determine frequency from period, wavelength, or wave speed.

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λ

Wavelength Calculator

Calculate wavelength using frequency and propagation velocity.

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λf

Wavelength and Frequency Calculator

Convert between wavelength and frequency using wave propagation speed.

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f→λ

Frequency to Wavelength Calculator

Convert frequency values directly into corresponding wavelengths.

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↔

Frequency Wavelength Converter

Convert wavelength and frequency across common scientific units.

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f₀

Resonance Frequency Calculator

Estimate the natural resonant frequency of oscillating systems.

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Δf

Doppler Effect Calculator

Calculate frequency shifts caused by relative motion between source and observer.

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Sound & Acoustics

cₛ

Speed of Sound Calculator

Calculate sound velocity under different temperature conditions.

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λₛ

Sound Wavelength Calculator

Determine acoustic wavelength from sound frequency and speed.

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dB

Decibel Calculator

Calculate sound intensity levels, ratios, and decibel differences.

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Light & Photon Physics

E

Photon Energy Calculator

Calculate photon energy from wavelength or electromagnetic frequency.

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c

Light Speed Calculator

Calculate relationships involving the speed of light, time, and distance.

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Motion & Forces

M

Mechanics Calculator

Solve common mechanical relationships involving motion, force, and energy.

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Φ

Physics Calculator

Access general physics calculations for common mechanical quantities.

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F

Force Calculator

Calculate force from mass and acceleration using Newton’s law.

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v

Velocity Calculator

Calculate velocity from displacement and elapsed time.

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x(t)

Kinematics Calculator

Solve displacement, velocity, acceleration, and time relationships.

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θ

Projectile Motion Calculator

Calculate projectile range, flight time, and maximum height.

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ΣF

Net Force Calculator

Determine the resultant force acting on an object.

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μ

Friction Calculator

Calculate friction force from normal force and friction coefficient.

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T

Tension Calculator

Determine tension forces in ropes, cables, and supported systems.

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Fg

Gravitational Force Calculator

Calculate gravitational attraction between two masses.

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Fi

Impact Force Calculator

Estimate forces generated during impacts and rapid deceleration.

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Energy & Mechanics

U

Potential Energy Calculator

Calculate stored gravitational or mechanical potential energy.

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W

Work Calculator Physics

Calculate mechanical work from force and displacement.

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W

Work Done Calculator

Calculate work performed by a force over a distance.

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p

Momentum Calculator

Determine linear momentum using mass and velocity.

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E↔

Energy Conversion Calculator

Convert energy between common scientific and engineering units.

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Ug

Gravitational Energy Calculator

Calculate gravitational potential energy from mass and height.

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I

Moment of Inertia Calculator

Calculate rotational inertia for common object geometries.

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Structures, Stress & Statics

σ

Stress Calculator

Calculate normal stress from applied force and area.

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ε

Strain Calculator

Determine material deformation relative to original length.

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E

Young Modulus Calculator

Calculate Young’s modulus using stress and strain.

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τ

Shear Stress Calculator

Determine shear stress caused by tangential loading.

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M

Bending Moment Calculator

Calculate bending moment for beams under applied loads.

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δ

Beam Deflection Calculator

Estimate beam displacement under common loading conditions.

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I

Beam Calculator Online

Analyze beam loading, reactions, bending, and deflection.

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F

Load Calculator

Calculate applied loads for basic structural systems.

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Σ

Statics Calculator

Solve forces and moments in static equilibrium systems.

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=

Equilibrium Calculator

Determine balanced forces and moments in equilibrium.

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CM

Center of Mass Calculator

Calculate the combined center of mass of multiple objects.

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FAQ

Frequently Asked Questions

Learn how to use our wave, optics, acoustics, mechanics, and physics calculators.

These tools can calculate frequency, wavelength, wave speed, sound properties, photon energy, Doppler shifts, resonance, motion, forces, energy, and related physical quantities.

Wave speed is related to wavelength and frequency by v = fλ. For electromagnetic waves in vacuum, the wave speed is the speed of light, c.

Yes. For a constant wave speed, increasing frequency decreases wavelength, while decreasing frequency increases wavelength.

Yes. The collection includes calculators for sound wavelength, speed of sound, decibels, photon energy, light speed, frequency, and wavelength conversion.

Yes. The calculators listed on this page are free online tools and can be used without a subscription.