Frequency Calculator (Chemistry)

Waves carry energy through space, and their frequency, wavelength, and velocity are always mathematically linked — the Frequency Calculator solves for whichever one you're missing. Select your calculation type (frequency, wavelength, or velocity), choose a medium or wave type (such as light in vacuum or sound in air), and enter your known values with their units to get the result in both standard and scientific notation. For light waves, the calculator also returns photon energy in electron volts (eV).

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Frequently Asked Questions

How do I calculate frequency from wavelength?

To calculate frequency, use the formula f = v/λ where f is frequency, v is wave velocity, and λ is wavelength. Simply divide the wave velocity by the wavelength to get the frequency in Hz.

What is the relationship between frequency and wavelength?

Frequency and wavelength are inversely proportional - as frequency increases, wavelength decreases. This relationship is described by the equation c = fλ, where c is the speed of light (constant).

How do I find wavelength from frequency?

Use the formula λ = v/f where λ is wavelength, v is wave velocity, and f is frequency. Divide the wave velocity by the frequency to calculate the wavelength.

What frequency is visible light?

Visible light frequencies range from approximately 430 THz (red light, ~700 nm) to 750 THz (violet light, ~400 nm). Green light has a frequency around 545 THz at 550 nm wavelength.

What is the difference between electromagnetic waves and sound waves?

Electromagnetic waves (like light) can travel through vacuum at the speed of light (3×10⁸ m/s), while sound waves require a medium and travel much slower (343 m/s in air at 20°C).

How do I calculate photon energy from frequency?

Photon energy is calculated using E = hf, where h is Planck's constant (6.626×10⁻³⁴ J·s) and f is frequency. For convenience, energy can also be expressed in electron volts (eV).

What frequency is 5G technology?

5G operates across multiple frequency bands: low-band (600 MHz - 1 GHz), mid-band (1-6 GHz), and high-band millimeter wave (24-100 GHz). The specific frequency depends on the carrier and location.

Which color light has the highest frequency?

Violet light has the highest frequency in the visible spectrum, at approximately 750 THz with a wavelength around 400 nm. Beyond violet, ultraviolet light has even higher frequencies.