dBm to Volt Calculator

This tool converts Power in dBm to Voltage.

The voltage represents the root-mean-square value or VRMS.

The default impedance (Z) is 50 ohm, although you can change that to any value.

Convert Volt to dBm

Formula

VRMS = SQRT(Z/1000)*10(PdBm/20)

Example Calculation

1 dBm into a 50 ohm impedance translates to Voltage of 251 millivolt.

The same power into half the impedance value (25 ohm) gives 177 mV.

dBm to Volt Conversion Table

This table shows dBm values and their equivalent in Volt.

dBmVolt
-1744.4615E-10
-1735.0059E-10
-1725.6167E-10
-1716.3021E-10
-1707.0711E-10
-1697.9339E-10
-1688.9019E-10
-1679.9881E-10
-1661.1207E-09
-1651.2574E-09
-1641.4109E-09
-1631.5830E-09
-1621.7762E-09
-1611.9929E-09
-1602.2361E-09
-1592.5089E-09
-1582.8150E-09
-1573.1585E-09
-1563.5439E-09
-1553.9764E-09
-1544.4615E-09
-1535.0059E-09
-1525.6167E-09
-1516.3021E-09
-1507.0711E-09
-1497.9339E-09
-1488.9019E-09
-1479.9881E-09
-1461.1207E-08
-1451.2574E-08
-1441.4109E-08
-1431.5830E-08
-1421.7762E-08
-1411.9929E-08
-1402.2361E-08
-1392.5089E-08
-1382.8150E-08
-1373.1585E-08
-1363.5439E-08
-1353.9764E-08
-1344.4615E-08
-1335.0059E-08
-1325.6167E-08
-1316.3021E-08
-1307.0711E-08
-1297.9339E-08
-1288.9019E-08
-1279.9881E-08
-1261.1207E-07
-1251.2574E-07
-1241.4109E-07
-1231.5830E-07
-1221.7762E-07
-1211.9929E-07
-1202.2361E-07
-1192.5089E-07
-1182.8150E-07
-1173.1585E-07
-1163.5439E-07
-1153.9764E-07
-1144.4615E-07
-1135.0059E-07
-1125.6167E-07
-1116.3021E-07
-1107.0711E-07
-1097.9339E-07
-1088.9019E-07
-1079.9881E-07
-1061.1207E-06
-1051.2574E-06
-1041.4109E-06
-1031.5830E-06
-1021.7762E-06
-1011.9929E-06
-1002.2361E-06
-992.5089E-06
-982.8150E-06
-973.1585E-06
-963.5439E-06
-953.9764E-06
-944.4615E-06
-935.0059E-06
-925.6167E-06
-916.3021E-06
-907.0711E-06
-897.9339E-06
-888.9019E-06
-879.9881E-06
-861.1207E-05
-851.2574E-05
-841.4109E-05
-831.5830E-05
-821.7762E-05
-811.9929E-05
-802.2361E-05
-792.5089E-05
-782.8150E-05
-773.1585E-05
-763.5439E-05
-753.9764E-05
-744.4615E-05
-735.0059E-05
-725.6167E-05
-716.3021E-05
-707.0711E-05
-697.9339E-05
-688.9019E-05
-679.9881E-05
-661.1207E-04
-651.2574E-04
-641.4109E-04
-631.5830E-04
-621.7762E-04
-611.9929E-04
-602.2361E-04
-592.5089E-04
-582.8150E-04
-573.1585E-04
-563.5439E-04
-553.9764E-04
-544.4615E-04
-535.0059E-04
-525.6167E-04
-516.3021E-04
-507.0711E-04
-497.9339E-04
-488.9019E-04
-479.9881E-04
-461.1207E-03
-451.2574E-03
-441.4109E-03
-431.5830E-03
-421.7762E-03
-411.9929E-03
-402.2361E-03
-392.5089E-03
-382.8150E-03
-373.1585E-03
-363.5439E-03
-353.9764E-03
-344.4615E-03
-335.0059E-03
-325.6167E-03
-316.3021E-03
-307.0711E-03
-297.9339E-03
-288.9019E-03
-279.9881E-03
-261.1207E-02
-251.2574E-02
-241.4109E-02
-231.5830E-02
-221.7762E-02
-211.9929E-02
-202.2361E-02
-192.5089E-02
-182.8150E-02
-173.1585E-02
-163.5439E-02
-153.9764E-02
-144.4615E-02
-135.0059E-02
-125.6167E-02
-116.3021E-02
-107.0711E-02
-97.9339E-02
-88.9019E-02
-79.9881E-02
-61.1207E-01
-51.2574E-01
-41.4109E-01
-31.5830E-01
-21.7762E-01
-11.9929E-01
02.2361E-01
12.5089E-01
22.8150E-01
33.1585E-01
43.5439E-01
53.9764E-01
64.4615E-01
75.0059E-01
85.6167E-01
96.3021E-01
107.0711E-01
117.9339E-01
128.9019E-01
139.9881E-01
141.1207E+00
151.2574E+00
161.4109E+00
171.5830E+00
181.7762E+00
191.9929E+00
202.2361E+00
212.5089E+00
222.8150E+00
233.1585E+00
243.5439E+00
253.9764E+00
264.4615E+00
275.0059E+00
285.6167E+00
296.3021E+00
307.0711E+00
317.9339E+00
328.9019E+00
339.9881E+00
341.1207E+01
351.2574E+01
361.4109E+01
371.5830E+01
381.7762E+01
391.9929E+01
402.2361E+01
412.5089E+01
422.8150E+01
433.1585E+01
443.5439E+01
453.9764E+01
464.4615E+01
475.0059E+01
485.6167E+01
496.3021E+01
507.0711E+01
517.9339E+01
528.9019E+01
539.9881E+01
541.1207E+02
551.2574E+02
561.4109E+02
571.5830E+02
581.7762E+02
591.9929E+02
602.2361E+02
612.5089E+02
622.8150E+02
633.1585E+02
643.5439E+02
653.9764E+02
664.4615E+02
675.0059E+02
685.6167E+02
696.3021E+02
707.0711E+02
717.9339E+02
728.9019E+02
739.9881E+02
741.1207E+03
751.2574E+03
761.4109E+03
771.5830E+03
781.7762E+03
791.9929E+03
802.2361E+03
812.5089E+03
822.8150E+03
833.1585E+03
843.5439E+03
853.9764E+03
864.4615E+03
875.0059E+03
885.6167E+03
896.3021E+03
907.0711E+03
917.9339E+03
928.9019E+03
939.9881E+03
941.1207E+04
951.2574E+04
961.4109E+04
971.5830E+04
981.7762E+04
991.9929E+04
1002.2361E+04

dBm to Volt Excel Calculator

Use Excel to calculate a range of dBm to RMS Volt values. Use the following formula to calculate the value of voltage

B4 = (SQRT($B$1/1000))*10^(A4/20)

Voltage values are in Column B, while dBm values are in column A. The impedance value is fixed and in Cell B1.

📥 Excel File for dBm to Volt conversion