Antenna Length Chart in Feet and Meters

 Thanks to W7LK and QSL.net for this handy antenna length chart.

Accessed on 31 December 2025, 2231 UTC.

Content and Source:  https://www.qsl.net/w/w7lk/site/antennachart.htm

Please check email link or scroll down to read your chart.

Russ Roberts (KH6JRM).

Antenna Length Chart in Feet and Meters

---

Antenna Length Chart in Feet and Meters
Ham Band	Frequency (Mhz)	1/4 λ (Feet)	1/2 λ Dipole (Feet)	1 λ Loop (Feet)		1/4 λ (Meters)	1/2 λ Dipole (Meters)	1 λ Loop (Meters)
160	1.800	130' 0''	260' 0''	558' 4''		39.6	79.3	170.2
	1.850	126' 6''	253' 0''	543' 3''		38.6	77.1	165.6
	1.900	123' 2''	246' 4''	528' 11''		37.5	75.1	161.2
	2.000	117' 0''	234' 0''	502' 6''		35.7	71.3	153.2
80	3.500	66' 10''	133' 9''	287' 2''		20.4	40.8	87.5
	3.750	62' 5''	124' 10''	268' 0''		19.0	38.0	81.7
	3.900	60' 0''	120' 0''	257' 8''		18.3	36.6	78.5
	4.000	58' 6''	117' 0''	251' 3''		17.8	35.7	76.6
60	5.330.5	43' 9''	87' 8''	188' 5''		13.4	26.8	57.5
	5.346.5	43' 7''	87' 5''	188' 0''		13.3	26.7	57.3
	5.366.5	43' 6''	87' 2''	187' 3''		13.3	26.6	57.1
	5.371.5	43' 5''	87' 1''	187' 1''		13.2	26.5	57.0
	5.403.5	43' 3''	86' 6''	186' 0''		13.2	26.4	56.7
40	7.000	33' 5''	66' 10''	143' 7''		10.2	20.4	43.8
	7.150	32' 9''	65' 5''	140' 7''		10.0	20.0	42.8
	7.300	32' 1''	64' 1''	137' 8''		9.8	19.5	42.0

 

 

 

Ham Band	Frequency (Mhz)	1/4 λ (Feet)	1/2 λ Dipole (Feet)	1 λ Loop (Feet)		1/4 λ (Meters)	1/2 λ Dipole (Meters)	1 λ Loop (Meters)
30	10.100	23' 2''	46' 4''	99' 6''		7.1	14.1	30.3
	10.150	23' 1''	46' 1''	99' 0''		7.0	14.1	30.2
20	14.000	16' 9''	33' 5''	71' 9''		5.1	10.2	21.9
	14.150	16' 6''	33' 1''	71' 0''		5.0	10.1	21.6
	14.300	16' 4''	32' 9''	70' 3''		5.0	10.0	21.4
	14.350	16' 4''	32' 7''	70' 0''		5.0	9.9	21.3
17	18.068	12' 11''	25' 11''	55' 7''		3.9	7.9	17.0
	18.168	12' 11''	25' 9''	55' 4''		3.9	7.9	16.9
15	21.000	11' 2''	22' 3''	47' 10''		3.4	6.8	14.6
	21.200	11' 0''	22' 1''	47' 5''		3.4	6.7	14.4
	21.450	10' 11''	21' 10''	46' 10''		3.3	6.7	14.3
12	24.890	9' 5''	18' 10''	40' 5''		2.9	5.7	12.3
	24.990	9' 4''	18' 9''	40' 3''		2.9	5.7	12.3
10	28.000	8' 4''	16' 9''	35' 11''		2.5	5.1	10.9
	28.500	8' 3''	16' 5''	35' 3''		2.5	5.0	10.7
	29.700	7' 11''	15' 9''	33' 10''		2.4	4.8	10.3

 

 

 

Ham Band	Frequency (Mhz)	1/4 λ (Feet)	1/2 λ Dipole (Feet)	1 λ Loop (Feet)		1/4 λ (Meters)	1/2 λ Dipole (Meters)	1 λ Loop (Meters)
6	50.000	4' 8''	9' 4''	21' 1''		1.4	2.9	6.1
	54.000	4' 4''	8' 8''	18' 7''		1.3	2.6	5.7
2	144.000	1' 8''	3' 3''	7' 0''		0.5	1.0	2.1
	148.000	1' 7''	3' 2''	6' 9''		0.5	1.0	2.1
Antenna length based on the following formulars:
1/2 λ dipole (feet)= 468 / frequency in Mhz.
1/2 λ dipole (meters) = 142.65 / frequency in Mhz
Full wave loop (feet) = 1005 / frequency in Mhz
Full wave loop (meters) = 306.32 / frequency in Mhz
Cut wire slightly longer for connecting insulators and pruning.