Electromagnetic Waves & Frequency Calculator
Convert frequency (MHz/GHz) to wavelength (m/cm/nm), photon energy (eV/J), and spectrum band.
Last reviewed by the myCalculator Editorial Team
Input Parameters
Calculation Results
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Formula & How Electromagnetic Waves & Frequency Calculator Works
All electromagnetic waves travel at the speed of light, so wavelength and frequency are linked by λ = c ÷ f, and photon energy is E = h × f. FM radio at 100 MHz has a wavelength of 3 m. A 2.4 GHz Wi-Fi signal has a wavelength of 12.5 cm. Green light at about 5.4 × 10¹⁴ Hz has a wavelength of about 555 nm and a photon energy of about 2.2 eV. Moving up the spectrum from radio waves through microwaves, infrared, visible light, ultraviolet, X-rays and gamma rays, frequency and photon energy rise while wavelength falls. Higher-energy radiation is more able to ionise atoms, which is why X-rays and gamma rays are hazardous.
- Enter Frequency in Megahertz (MHz): Input your target parameter value.
- Apply Formula: Calculate using
Wavelength λ = c / f | Photon Energy E = h × f. - Review Results: View exact computed answers, metrics, and worked mathematical proofs.
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MyCalculator.com.au. (2026). Electromagnetic Waves & Frequency Calculator. Retrieved October 24, 2026, from https://www.mycalculator.com.au/calculators/physics/electromagnetic-spectrum
MyCalculator.com.au. (2026) 'Electromagnetic Waves & Frequency Calculator'. Available at: https://www.mycalculator.com.au/calculators/physics/electromagnetic-spectrum (Accessed: 24 October 2026).
Frequently Asked Questions (FAQs)
What frequency band is Wi-Fi and 5G?
Wi-Fi operates primarily at 2.4 GHz (2,400 MHz) and 5 GHz (5,000 MHz) in the Microwave spectrum.
What is the wavelength of visible light?
Visible light ranges from approximately 400 nm (violet) to 700 nm (red).
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Calculations and mathematical logic on this page are grounded in published statutory rules, regulatory standards, and official government data published by the following bodies:
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