Antenna Loop Calculator



Antennas are essential components in the world of wireless communication, and their performance greatly depends on their dimensions, including the antenna loop length. Whether you’re an amateur radio enthusiast, a professional engineer, or just curious about antenna design, our Antenna Loop Calculator is here to help you determine the optimal loop length for your antenna.

How to Use the Antenna Loop Calculator

Using our Antenna Loop Calculator is straightforward. Follow these simple steps:

  1. Enter the Frequency: In the provided input field, enter the frequency (in Hertz) for which you want to calculate the antenna loop length.
  2. Click Calculate: After entering the frequency, click the “Calculate” button, and the calculator will instantly compute the antenna loop length for you.
  3. Get Your Result: The calculated antenna loop length (in meters) will be displayed below, helping you design your antenna for optimal performance.


The antenna loop length (L) can be calculated using the following formula:

L = (C / f) * 0.95


  • L: Antenna loop length (in meters)
  • C: Speed of light (approximately 299,792,458 meters per second)
  • f: Frequency of the antenna (in Hertz)


Let’s say you want to design an antenna for a frequency of 100 MHz. Using the formula:

L = (299,792,458 / 100,000,000) * 0.95 ≈ 2.85 meters

So, the antenna loop length for a 100 MHz frequency would be approximately 2.85 meters.

Frequently Asked Questions

1. Why is antenna loop length important?

Antenna loop length is crucial because it directly affects the antenna’s efficiency and resonance. Using the correct loop length ensures that your antenna performs optimally for a given frequency.

2. Can I use this calculator for any type of antenna?

Yes, this calculator is applicable to a wide range of antenna types, including dipole antennas, loop antennas, and more, as long as you know the target frequency.

3. What units does the calculator use for the result?

The calculator provides the antenna loop length in meters (m).

4. Is the given formula suitable for all frequencies?

The formula is valid for most frequencies, but it assumes that the antenna length is a fraction of the wavelength. For very low or very high frequencies, additional factors may need to be considered.


Our Antenna Loop Calculator simplifies the process of determining the ideal loop length for your antenna, helping you achieve better signal reception and transmission. Whether you’re a radio hobbyist or an antenna design professional, this tool can save you time and ensure your antenna performs at its best. Use it for your next antenna project and experience improved wireless communication.

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