VSWR Conversion Table

VSWR (Voltage Standing Wave Ratio) and Return Loss both measure the same parameter i.e., the signal reflected back in a transmission line. VSWR is defined as the ratio of the maximum to minimum voltage on a loss-less transmission line (expressed as 3.0:1, 2.0:1). This ratio represented in dB is called as Return Loss. The table below converts between VSWR, return loss, reflection coefficient, mismatch loss, reflected power and through power. Click here to use the VSWR Calculator.

VSWR (:1)Return Loss (dB)Reflection Coefficient (Γ)Mismatch loss (dB)Reflected Power (%)Through Power (%)
1.00166.0250.00050099.99998
1.00260.0090.00100.000199.9999
1.00356.4910.00150.000010.000299.99978
1.00453.9970.0020.000020.000499.9996
1.00550.4840.0030.000040.000999.9991
1.00650.4840.0030.000040.000999.9991
1.00749.1490.00350.000050.001299.99878
1.00847.9930.0040.000070.001699.9984
1.00946.9750.00450.000090.00299.99798
1.0146.0640.0050.000110.002599.9975
1.01145.240.00550.000130.00399.99698
1.01244.4890.0060.000160.003699.9964
1.01343.7980.00650.000180.004299.99578
1.01443.1590.0070.000210.004999.9951
1.01542.5640.00740.000240.005599.99452
1.01642.0070.00790.000270.006299.99376
1.01741.4850.00840.000310.007199.99294
1.01840.9930.00890.000340.007999.99208
1.01940.5280.00940.000380.008899.99116
1.0240.0860.00990.000430.009899.9902
1.02139.6670.01040.000470.010899.98918
1.02239.8670.01020.000450.010499.9896
1.02338.8850.01140.000560.01399.987
1.02438.520.01190.000620.014299.98584
1.02538.70.01160.000580.013599.98654
1.02637.8330.01280.000710.016499.98362
1.02737.510.01330.000770.017799.98231
1.02837.1980.01380.000830.01999.98096
1.02936.8950.01430.000890.020499.97955
1.0336.6070.01480.000950.021999.9781
1.03136.3270.01530.001020.023499.97659
1.03236.0550.01570.001070.024699.97535
1.03335.7920.01620.001140.026299.97376
1.03435.5370.01670.001210.027999.97211
1.03535.290.01720.001290.029699.97042
1.03635.0490.01770.001360.031399.96867
1.03734.8160.01820.001440.033199.96688
1.03834.5880.01860.00150.034699.9654
1.03934.3670.01910.001580.036599.96352
1.0434.1510.01960.001670.038499.96158
1.04133.9410.02010.001750.040499.9596
1.04233.7630.02050.001830.04299.95798
1.04333.5360.0210.001920.044199.9559
1.04433.3410.02150.002010.046299.95378
1.04533.150.0220.00210.048499.9516
1.04632.9630.02250.00220.050699.94938
1.04732.780.0230.00230.052999.9471
1.04832.6020.02340.002380.054899.94524
1.04932.4270.02390.002480.057199.94288
1.0532.2560.02440.002590.059599.94046
1.05132.0880.02490.002690.06299.938
1.05231.9230.02530.002780.06499.93599
1.05331.7620.02580.002890.066699.93344
1.05431.6040.02630.003010.069299.93083
1.05531.4490.02680.003120.071899.92818
1.05631.2970.02720.003210.07499.92602
1.05731.1470.02770.003330.076799.92327
1.058310.02820.003460.079599.92048
1.05930.8560.02870.003580.082499.91763
1.0630.7140.02910.003680.084799.91532
1.06130.5750.02960.003810.087699.91238
1.06230.4380.03010.003940.090699.9094
1.06330.3030.03050.004040.09399.90698
1.06430.1710.0310.004180.096199.9039
1.06530.040.03150.004310.099299.90078
1.06629.9120.03190.004420.101899.89824
1.06729.7850.03240.004560.10599.89502
1.06829.6610.03290.00470.108299.89176
1.06929.5380.03340.004850.111699.88844
1.0729.4170.03380.004960.114299.88576
1.07129.2980.03430.005110.117699.88235
1.07229.1810.03470.005230.120499.87959
1.07329.0660.03520.005380.123999.8761
1.07428.9520.03570.005540.127499.87255
1.07528.8390.03610.005660.130399.86968
1.07628.7280.03660.005820.13499.86604
1.07728.6190.03710.005980.137699.86236
1.07828.5110.03750.006110.140699.85938
1.07928.4050.0380.006280.144499.8556
1.0828.2990.03850.006440.148299.85178
1.08128.1960.03890.006580.151399.84868
1.08228.0930.03940.006750.155299.84476
1.08327.9920.03980.006880.158499.8416
1.08427.8920.04030.007060.162499.83759
1.08527.7940.04080.007240.166599.83354
1.08627.6960.04120.007380.169799.83026
1.08727.60.04170.007560.173999.82611
1.08827.5050.04210.00770.177299.82276
1.08927.4110.04260.007890.181599.81852
1.0927.3180.04310.008080.185899.81424
1.09127.2660.04330.008150.187599.81251
1.09227.1350.0440.008420.193699.8064
1.09327.0460.04440.008570.197199.80286
1.09426.9570.04490.008760.201699.7984
1.09526.8690.04530.008920.205299.79479
1.09626.7820.04580.009120.209899.79024
1.09726.6970.04630.009320.214499.78563
1.09826.6120.04670.009480.218199.78191
1.09926.5280.04720.009690.222899.77722
1.126.4440.04760.009850.226699.77342
1.10226.2810.04850.010230.235299.76478
1.10426.120.04940.010610.24499.75596
1.10625.9630.05030.0110.25399.74699
1.10825.8090.05120.01140.262199.73786
1.1125.6580.05210.01180.271499.72856
1.11225.510.0530.012220.280999.7191
1.11425.3640.05390.012640.290599.70948
1.11625.2210.05480.013060.300399.6997
1.11825.0810.05570.013490.310299.68975
1.1224.9430.05660.013940.320499.67964
1.12224.8080.05750.014380.330699.66938
1.12424.6750.05840.014840.341199.65894
1.12624.5440.05930.01530.351699.64835
1.12824.4150.06020.015770.362499.6376
1.1324.2890.0610.016190.372199.6279
1.13224.1640.06190.016670.383299.61684
1.13424.0420.06280.017160.394499.60562
1.13623.9210.06370.017660.405899.59423
1.13823.8030.06450.018110.41699.58398
1.1423.6860.06540.018620.427799.57228
1.14223.5710.06630.019130.439699.56043
1.14423.4570.06720.019660.451699.54842
1.14623.3460.0680.020130.462499.5376
1.14823.2350.06890.020670.474799.52528
1.1523.1270.06980.021210.487299.5128
1.15223.020.07060.02170.498499.50156
1.15422.9140.07150.022260.511299.48878
1.15622.810.07240.022820.524299.47582
1.15822.7080.07320.023330.535899.46418
1.1622.6070.07410.023910.549199.45092
1.16222.5070.07490.024430.56199.439
1.16422.4080.07580.025020.574699.42544
1.16622.3110.07660.025560.586899.41324
1.16822.2150.07750.026160.600699.39938
1.1722.120.07830.026710.613199.38691
1.17222.0270.07920.027330.627399.37274
1.17421.9340.080.027880.6499.36
1.17621.8430.08090.028520.654599.34552
1.17821.7530.08170.029090.667599.33251
1.1821.6640.08260.029730.682399.31772
1.18221.5760.08340.030310.695699.30444
1.18421.4890.08420.03090.70999.29104
1.18621.4030.08510.031570.724299.2758
1.18821.3180.08590.032160.737999.26212
1.1921.2340.08680.032840.753499.24658
1.19221.1510.08760.033460.767499.23262
1.19421.0690.08840.034070.781599.21854
1.19620.9880.08920.034690.795799.20434
1.19820.9070.09010.03540.811899.1882
1.220.8280.09090.036030.826399.17372
1.2120.4430.0950.039370.902599.0975
1.2220.0790.09910.042860.982199.01792
1.2319.7320.10310.046411.06398.93704
1.2419.4010.10710.05011.14798.85296
1.2519.0850.11110.053941.234398.76568
1.2618.7830.1150.057821.322598.6775
1.2718.4930.11890.061841.413798.58628
1.2818.2160.12280.065991.50898.49202
1.2917.9490.12660.070171.602898.39724
1.317.6920.13040.074481.700498.29958
1.3117.4450.13420.078931.80198.19904
1.3217.2070.13790.083381.901698.09836
1.3316.9770.14160.087962.005197.99494
1.3416.7550.14530.092672.111297.88879
1.3516.540.14890.097372.217197.78288
1.3616.3220.15270.102472.331797.66827
1.3716.1310.15610.107142.436797.56328
1.3815.9360.15970.11222.550497.44959
1.3915.7470.16320.117242.663497.33658
1.415.5630.16670.122392.778997.22111
1.4115.3850.17010.127512.893497.1066
1.4215.2110.17360.13293.013796.9863
1.4315.0430.17690.138083.129496.87064
1.4414.8790.18030.143533.250896.74919
1.4514.7190.18370.149093.374696.62543
1.4614.5640.1870.154593.496996.5031
1.4714.4120.19030.160193.621496.37859
1.4814.2640.19360.165913.748196.2519
1.4914.120.19680.171553.87396.12698
1.513.9790.20.17729496
1.5213.7080.20630.188884.25695.74403
1.5413.4490.21260.200874.519995.48012
1.5613.2010.21880.213054.787395.21266
1.5812.9640.22480.225215.053594.9465
1.612.7360.23080.237735.326994.67314
1.6212.5180.23660.250195.59894.40204
1.6412.3080.24240.262995.875894.12422
1.6612.1070.24810.275916.155493.84464
1.6811.9130.25370.288936.436493.56363
1.711.7250.25930.302286.723693.27635
1.7211.5450.26470.315487.006692.99339
1.7411.370.27010.328997.295492.7046
1.7611.2020.27540.342557.584592.41548
1.7811.0390.28060.356167.873692.12636
1.810.8810.28570.36988.162491.83755
1.8210.2790.30620.427569.375890.62416
1.8410.5810.29580.397668.749891.25024
1.8610.4370.30070.411599.04290.95795
1.8810.2980.30560.42589.339190.66086
1.910.1630.31030.439699.628690.37139
1.9210.0320.31510.454149.928890.0712
1.949.9040.31970.4682410.220889.77919
1.969.780.32430.482610.51789.48295
1.989.660.32890.497210.817589.18248
29.5420.33330.5114211.108988.89111
2.18.9990.35490.5846612.595487.4046
2.28.5190.3750.6581714.062585.9375
2.38.0910.3940.7326515.523684.4764
2.47.7070.41180.8070216.957983.04208
2.57.360.42850.8810418.361281.63878
2.67.0440.44440.955519.749180.25086
2.76.7550.45951.0321.11478.88598
2.86.490.47371.1035822.439277.56083
2.96.2460.48721.1768323.736476.26362
36.0210.51.249392575
3.15.8110.51221.3214926.234973.76512
3.25.6170.52381.3928327.436672.56336
3.35.4350.53491.4637428.611871.3882
3.45.2650.54541.533329.746170.25388
3.55.1050.55561.6032830.869169.13086
3.64.9560.56521.6714131.945168.0549
3.74.8150.57441.7388332.993567.00646
3.84.6820.58331.8061334.023965.97611
3.94.5560.59181.8723835.022764.97728
44.4370.61.93823664
4.14.3240.60792.0034436.954263.04576
4.24.2170.61542.0671137.871762.12828
4.34.1150.62272.1307538.775561.22447
4.44.0180.62972.1933939.652260.34779
4.53.9260.63642.2548740.500559.4995
4.63.8380.64282.3150441.319258.68082
4.73.7530.64922.3766742.146157.85394
4.83.6730.65522.4358242.928757.0713
4.93.5960.6612.4943143.692156.3079
53.5220.66672.5530744.448955.55111
5.23.3830.67742.6669945.887154.11292
5.43.2550.68752.7790647.265652.73438
5.63.1360.69692.8875848.56751.43304
5.83.0250.70592.9955149.829550.17052
62.9230.71423.0987651.008248.99184
6.22.8270.72223.2018452.157347.84272
6.42.7370.72973.3018353.246246.75379
6.62.6530.73683.3996454.287445.71258
6.82.5730.74363.4963555.294144.7059
72.4990.753.5902256.2543.75
7.22.4280.75613.6823957.168742.83128
7.42.3620.76193.7725958.049241.95084
7.62.2990.76743.8605558.890341.10972
7.82.2390.77283.9493259.72240.27802
82.1830.77784.0337360.497339.50272
8.22.1290.78264.1168761.246338.75372
8.42.0780.78724.1985561.968438.03162
8.62.0290.79174.2804562.678937.32111
8.81.9830.79594.3587563.345736.65432
91.9380.84.436976436
9.21.8960.80394.513164.625535.37448
9.41.8550.80774.5889465.237934.76207
9.61.8160.81134.6623865.820834.17923
9.81.7790.81484.735366.389933.6101
101.7430.81824.8076466.945133.05488
111.5840.83335.1483169.438930.56111
121.4510.84625.4676571.605428.39456
131.3390.85715.7613273.46226.53796
141.2430.86676.0409575.116924.88311
151.160.8756.3008976.562523.4375
161.0870.88246.5488177.86322.13702
171.0230.88896.7807779.014320.98568
180.9660.89477.0003180.048819.95119
190.9150.97.212468119
200.8690.90487.4151481.866318.1337
220.790.91317.7924383.375216.62484
240.7240.928.1360984.6415.36
260.6680.9268.4611285.747614.2524
280.6210.9318.7536986.676113.3239
300.5790.93559.0364787.51612.48398
320.5430.93949.298688.247211.75276
340.5110.94299.5491388.90611.09396
360.4830.94599.7768289.472710.52732
380.4570.948710.0013890.00329.99683
400.4340.951310.2214790.49729.50283
420.4140.953510.4173490.91629.08377
440.3950.955510.6038291.2988.70198
460.0380.995620.5647499.12190.87806
480.3620.959210.9726192.00657.99354
500.3470.960811.1428192.31377.68634
550.3160.964311.5412492.98747.01255
600.290.967211.9027893.54766.45242
650.2670.969712.2415794.03185.96819
700.2480.971912.5640994.4595.54104
750.2320.973612.8313794.78975.2103
800.2170.975313.116795.1214.87899
850.2040.976813.3854995.41384.58618
900.1930.97813.6135195.64844.3516
950.1830.979213.8544795.88334.11674
1000.1740.980214.0662696.07923.9208