Dipole Calculator
Our dipole calculator is a simple tool that allows you to compute the length of a simple antenna  it'll also provide you with the value of the wavelength and the adjustment factor [k].
In the text below, we will cover the basic rules of antenna construction, how to calculate dipole antenna length, and explain how to put our wire antenna calculator to work.
How to use the dipole calculator?
In order to use our antenna calculator, you'll need to know the frequency on which you want your antenna to operate.
Your result will consist of:
 Your total antenna length (L);
 Length of one arm of the antenna (l); and
 Wavelength, as well as its portions: 1/2, 1/4 (it'll also allow you to use it as a 1/2 wave dipole calculator).
In the advanced mode:
You may enter the diameter of your conductor to obtain the adjustment factor [k]. You may need it for high frequencies and thick wires, or if your antenna will be made out of the tube.
💡 The lengths used in our dipole calculator are inches, centimeters and all other popular units. Feel free to play with the numbers however you like! 
Try our other essential tools:
 The wire gauge tool  assess the properties of a wire, such as its diameter and resistance 📎
 Resonant frequency calculator
 Harmonic wave tool 🌊
How is dipole antenna length calculated?
The antenna length formulas used in our dipole length calculator are as follows:
L = 468 / f
l = L / 2
Where:
 L  the length of the total dipole antenna in feet (ft);
 l  the length of the arm of the dipole antenna in feet (ft); and
 f  the desired frequency.
We also used the simple wavelength formula:
Wavelength = c / f
Where:
 c  the speed of light: 299,792,458 m/s; and
 f  frequency.
If you want to use the adjustment factor [k], you'll need the following version:
L = 0.5 * k * c / f
Where:
 c means the speed of light; and
 k is the adjustment factor, calculated with a following equation (simplified version):
k= 0.9787  [(11.86497 / (1 + (R/0.000449)^{1.7925})^{0.3})]
Where:
R = ½ wavelength / Diameter of a conductor
.
Dipole FM antenna length and construction
Dipole antennas are the easiest and probably the cheapest antennas to construct. They can give you a great insight into how antennas work and can be an excellent start for a beginner.
What will I need?

Some wire  usually made out of copper;

Insulators  should be placed on both ends of the wire;

A dipole centerpiece (an insulator can serve this purpose);

... with a feeder attached to it  usually a coax cable with an impedance of 50 Ω (remember to seal the endings!);

Fixings;

Two highlocated, obstructionfree points to plant the antenna  the dipole's length is the most crucial feature to consider; and

Of course  our simple dipole calculator to assess the length of the device
It is recommended to cut the wire a little bit longer than calculated, and then trim it to the length that provides you with the best results.