EMF/EMR units conversion

Electromagnetic Radiation(EMR/EMF) Knowledge‎ > ‎

So many types and units?

One of the reasons for the confusion around Electromagnetic none ionizing radiation must be the many types of it and the different units in which we measure each and every type of EMR.

ELF types and units

Eextrem Low Frequency EMR has 2 types of fields: Electric and Magnetic fields.

The electric filed is usually left a side unattended, but the units are Volt per meter (V/m).

The magnetic fields has 2 units: milli Gouse(mG) and microTesla(UT)

The conversion between the 2 is very simple:

10mG=1uT

RF types and units

When referring to Radio Frequency (High Frequency) Electromagnetic none ionizing radiation there are 2 types of fields: Electric and Magnetic fields. This time the Magnetic field is usually left out. The Electric field is measured in units of Volt per meter (V/m).

When measuring RF radiation you usually measure the Electric field or The power density. The power density is measured in units of mW/m2 or uW/cm2.

Conversion from Electric Field to RF power density

It is possible to convert between the Electric field and the power density, but only in the far field.
In the following formulas S is the electromagnetic radiation power density and V is the electric field strength.

In order to convert from electric field (marked as V, units are Volt per meter) to units of electromagnetic radiation power density(marked in S), in units of micro Watts per square Centimeters, you need to use the following formula:

In order to convert from electric field (marked as V, units are volt to meter)to units of electromagnetic radiation power density(marked in S), in units of mWatts per square meter, you need to use the following formula:

The following is a partial conversion table:

V/M	uW/cm2	mW/m2
0.01	0.00002653	0.00026525
0.02	0.00010610	0.00106101
0.03	0.00023873	0.00238727
0.04	0.00042440	0.00424403
0.05	0.00066313	0.00663130
0.06	0.00095491	0.00954907
0.07	0.00129973	0.01299735
0.08	0.00169761	0.01697613
0.09	0.00214854	0.02148541
0.10	0.00265252	0.02652520
0.20	0.01061008	0.10610080
0.30	0.02387268	0.23872679
0.40	0.04244032	0.42440318
0.50	0.06631300	0.66312997
0.60	0.09549072	0.95490716	EU 2011
0.70	0.12997347	1.29973475
0.80	0.16976127	1.69761273
0.90	0.21485411	2.14854111
1.00	0.26525199	2.65251989
1.20	0.38196286	3.81962865
1.40	0.51989390	5.19893899
1.60	0.67904509	6.79045093
1.80	0.85941645	8.59416446
2.00	1.06100796	10.61007958
2.20	1.28381963	12.83819629
2.40	1.52785146	15.27851459
2.60	1.79310345	17.93103448
2.80	2.07957560	20.79575597
3.00	2.38726790	23.87267905
3.20	2.71618037	27.16180371
3.40	3.06631300	30.66312997
3.60	3.43766578	34.37665782
3.80	3.83023873	38.30238727
4.00	4.24403183	42.44031830
4.20	4.67904509	46.79045093
4.40	5.13527851	51.35278515
4.60	5.61273210	56.12732095
4.80	6.11140584	61.11405836
5.00	6.63129973	66.31299735
5.20	7.17241379	71.72413793
5.40	7.73474801	77.34748011
5.60	8.31830239	83.18302387
5.80	8.92307692	89.23076923
6.00	9.54907162	95.49071618
6.20	10.19628647	101.96286472
6.40	10.86472149	108.64721485
6.60	11.55437666	115.54376658
6.80	12.26525199	122.65251989
7.00	12.99734748	129.97347480
7.20	13.75066313	137.50663130
7.40	14.52519894	145.25198939
7.60	15.32095491	153.20954907
7.80	16.13793103	161.37931034
8.00	16.97612732	169.76127321
8.20	17.83554377	178.35543767
8.40	18.71618037	187.16180371
8.60	19.61803714	196.18037135
8.80	20.54111406	205.41114058
9.00	21.48541114	214.85411141
9.20	22.45092838	224.50928382
9.40	23.43766578	234.37665782
9.60	24.44562334	244.45623342
9.80	25.47480106	254.74801061
10.00	26.52519894	265.25198939
12.29	40.06474801	400.64748011	IL 800MHZ
15.00	59.68169761	596.81697613
19.42	100.00527560	1000.05275597	IL 2GHZ
20.00	106.10079576	1061.00795756
25.00	165.78249337	1657.82493369
30.00	238.72679045	2387.26790451
35.00	324.93368700	3249.33687003
36.00	343.76657825	3437.66578249
37.00	363.12997347	3631.29973475
38.00	383.02387268	3830.23872679
39.00	403.44827586	4034.48275862	ICNIRP 800MHZ
40.00	424.40318302	4244.03183024
41.00	445.88859416	4458.88594164
42.00	467.90450928	4679.04509284
43.00	490.45092838	4904.50928382
44.00	513.52785146	5135.27851459
45.00	537.13527851	5371.35278515
46.00	561.27320955	5612.73209549
47.00	585.94164456	5859.41644562
48.00	611.14058355	6111.40583554
49.00	636.87002653	6368.70026525
50.00	663.12997347	6631.29973475
51.00	689.92042440	6899.20424403
52.00	717.24137931	7172.41379310
53.00	745.09283820	7450.92838196
54.00	773.47480106	7734.74801061
55.00	802.38726790	8023.87267905
56.00	831.83023873	8318.30238727
57.00	861.80371353	8618.03713528
58.00	892.30769231	8923.07692308
59.00	923.34217507	9233.42175066
60.00	954.90716180	9549.07161804
61.00	987.00265252	9870.02652520
61.40	1000.02196313	10000.21963130	ICNIRP 2GHZ