Online Wavelength & Frequency Calculator
Instantly convert between wavelength and frequency of electromagnetic waves. An essential tool for students, physicists, and engineers working with the electromagnetic spectrum.
Wave Properties
Select a mode and enter your values.
Speed of Light (in vacuum)
This calculator uses the constant c = 299,792,458 m/s for calculations.
How to Use
- Select Mode: Choose whether you want to calculate Wavelength or Frequency.
- Enter Value: Input your known value (e.g., '550' for wavelength in nm).
- Select Units: Use the dropdown menus to select the correct units for both your input and desired output.
- Calculate: Click the "Calculate" button to see the instant result.
Example Calculation
Let's find the frequency of green light:
- Calculate For: Frequency
- Wavelength: 550 nm
The calculator will show that the corresponding frequency is approximately 5.45 x 10¹⁴ Hz (or 545 THz).
Frequently Asked Questions
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