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Electromagnetism · $\lambda = c / f$ · Quantum Optics

Wavelength to Frequency Calculator

High-precision wavelength to frequency and conversion factor calculator. Convert hertz to nanometers, megahertz to meters, giga hertz to hertz, m to hertz, and use the hz to joules calculator.

Electromagnetic Wave Calculator ($\lambda = c / f$)

Calculates vacuum speed of light $c \approx 299,792,458\text{ m/s}$. Works for radio, microwave, infrared, visible, and UV light.

e.g. 550 nm = Green visible light
hz ghz mhz selector
Electromagnetic Band
Visible Light
Wavelength in Meters
5.50e-7 m
Frequency in Hz
5.45e+14 Hz
Period (T)
1.83 fs

Wavelength & Frequency Physics Guide

What is the formula for wavelength to frequency?

The standard wave equation is λ = c / f, where $\lambda$ is wavelength in meters, $c \approx 299,792,458\text{ m/s}$ is the speed of light, and $f$ is frequency in Hertz. Inverting yields f = c / λ.

How do you convert hertz to nanometers?

To convert hertz to nanometers (and learn how to convert hertz to nanometers): calculate wavelength in meters ($\lambda = c / f$), then multiply by $10^9$. For example, a 500 THz wave ($5 \times 10^{14}\text{ Hz}$) equals 599.58 nm.

How to convert MHz to meters?

Knowing how to convert mhz to meters: use the convenient RF shortcut λ (meters) ≈ 300 / f (MHz). For 144 MHz amateur radio: $300 / 144 \approx 2.08\text{ meters}$.

What is angular frequency conversion?

The angular frequency conversion relates rotational radian frequency ($\omega$) to cyclical frequency ($f$) by ω = 2πf. 1 Hz equals $2\pi \approx 6.28318\text{ rad/s}$.