ALLIED'S ELECTRONICS DATA HANDBOOK

Decibel - Voltage, Current and Power Ratio Table

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Voltage
or
Current
Ratio		 Power
Ratio		 Voltage
or
Current
Ratio		 Power
Ratio		   Voltage
or
Current
Ratio		 Power
Ratio		 Voltage
or
Current
Ratio		 Power
Ratio
1.0000 1.0000 0 1.000 1.000   .4898 .2399 6.2 2.042 4.169
.9886 .9772 .1 1.012 1.023   .4842 .2344 6.3 2.065 4.266
.9772 .9550 .2 1.023 1.047   .4786 .2291 6.4 2.089 4.365
.9661 .9333 .3 1.035 1.072   .4732 .2239 6.5 2.113 4.467
.9550 .9120 .4 1.047 1.096   .4677 .2188 6.6 2.138 4.571
.9441 .8913 .5 1.059 1.122   .4624 .2138 6.7 2.163 4.677
.9333 .8710 .6 1.072 1.148   .4571 .2089 6.8 2.188 4.786
.9226 .8511 .7 1.084 1.175   .4516 .2042 6.9 2.213 4.898
.9120 .8318 .8 1.096 1.202   .4467 .1995 7.0 2.239 5.012
.9016 .8128 .9 1.109 1.230   .4416 .1950 7.1 2.265 5.129
.8913 .7943 1.0 1.122 1.259   .4365 .1905 7.2 2.291 5.248
.8810 .7762 1.1 1.135 1.288   .4315 .1862 7.3 2.317 5.370
.8710 .7586 1.2 1.148 1.318   .4266 .1820 7.4 2.344 5.495
.8610 .7413 1.3 1.161 1.349   .4217 .1778 7.5 2.371 5.623
.8511 .7244 1.4 1.175 1.380   .4169 .1738 7.6 2.399 5.754
.8414 .7079 1.5 1.189 1.413   .4121 .1698 7.7 2.427 5.888
.8318 .6918 1.6 1.202 1.445   .4074 .1660 7.8 2.455 6.026
.8222 .6761 1.7 1.216 1.479   .4027 .1622 7.9 2.483 6.166
.8128 .6607 1.8 1.230 1.514   .3981 .1585 8.0 2.512 6.310
.8035 .6457 1.9 1.245 1.549   .3969 .1549 8.1 2.541 6.457
.7943 .6310 2.0 1.259 1.585   .3890 .1514 8.2 2.570 6.607
.7852 .6166 2.1 1.274 1.622   .3846 .1479 8.3 2.600 6.761
.7762 .6026 2.2 1.288 1.660   .3802 .1445 8.4 2.630 6.918
.7674 .5888 2.3 1.303 1.698   .3758 .1413 8.5 2.661 7.079
.7586 .5754 2.4 1.318 1.738   .3715 .1380 8.6 2.692 7.244
.7499 .5623 2.5 1.334 1.778   .3673 .1349 8.7 2.723 7.413
.7413 .5495 2.6 1.349 1.820   .3631 .1318 8.8 2.754 7.586
.7328 .5370 2.7 1.365 1.862   .3589 .1288 8.9 2.786 7.762
.7244 .5248 2.8 1.380 1.905   .3548 .1259 9.0 2.818 7.943
.7161 .5129 2.9 1.396 1.950   .3508 .1230 9.1 2.851 8.128
.7079 .5012 3.0 1.413 1.995   .3467 .1202 9.2 2.884 8.318
.6998 .4898 3.1 1.429 2.042   .3428 .1175 9.3 2.917 8.511
.6918 .4786 3.2 1.445 2.089   .3388 .1148 9.4 2.951 8.710
.6839 .4677 3.3 1.462 2.138   .3350 .1122 9.5 2.985 8.913
.6761 .4571 3.4 1.479 2.188   .3311 .1096 9.6 3.020 9.120
.6683 .4467 3.5 1.496 2.239   .3273 .1072 9.7 3.055 9.333
.6607 .4365 3.6 1.514 2.291   .3236 .1047 9.8 3.090 9.550
.6531 .4266 3.7 1.531 2.344   .3199 .1023 9.9 3.126 9.772
.6457 .4169 3.8 1.549 2.399   .3162 .1000 10.0 3.162 10.000
.6383 .4074 3.9 1.567 2.455   .2985 .08913 10.5 3.350 11.22
.6310 .3981 4.0 1.585 2.512   .2818 .07943 11.0 3.548 12.59
.6237 .3890 4.1 1.603 2.570   .2661 .07079 11.5 3.758 14.13
.6166 .3802 4.2 1.622 2.630   .2512 .06310 12.0 3.981 15.85
.6095 .3715 4.3 1.641 2.692   .2371 .05623 12.5 4.217 17.78
.6026 .3631 4.4 1.660 2.754   .2239 .05012 13.0 4.467 19.95
.5957 .3548 4.5 1.679 2.818   .2113 .04467 13.5 4.732 22.39
.5888 .3467 4.6 1.698 2.884   .1995 .03981 14.0 5.012 25.12
.5821 .3388 4.7 1.718 2.951   .1884 .03548 14.5 5.309 28.18
.5754 .3311 4.8 1.738 3.020   .1778 .03162 15.0 5.623 31.62
.5689 .3236 4.9 1.758 3.090   .1585 .02512 16.0 6.310 39.81
.5623 .3162 5.0 1.778 3.162   .1413 .01995 17.0 7.079 50.12
.5559 .3090 5.1 1.799 3.236   .1259 .01585 18.0 7.943 63.10
.5495 .3020 5.2 1.820 3.311   .1122 .01259 19.0 8.913 79.43
.5433 .2951 5.3 1.841 3.388   .1000 .01000 20.0 10.000 100.00
.5370 .2884 5.4 1.862 3.467   .03162 .00100 30.0 31.62 1,000.00
.5309 .2818 5.5 1.884 3.548   .01 .00010 40.0 100.00 10,000.00
.5248 .2754 5.6 1.905 3.631   .003162 .00001 50.0 316.20 10 e5
.5188 .2692 5.7 1.928 3.715   .001 10 e-6 60.0 1,000.00 10 e6
.5129 .2630 5.8 1.950 3.802   .0003162 10 e-7 70.0 3,162.00 10 e7
.5070 .2570 5.9 1.972 3.890   .0001 10 e-8 80.0 10,000.00 10 e8
.5012 .2512 6.0 1.995 3.931   .00003162 10 e-9 90.0 31,620.00 10 e9
.4955 .2455 6.1 2.018 4.074   10 e-5 10 e-10 100.0 10 e5 10 e10

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