dBm ↔ mW ↔ Volts
Power - InputInput，
P(mW) = 10^(dBm/10)
: 0dBm = 1mW
dBm = 10×log₁₀(mW)
: 1000mW = 1W
Vrms = √(P×Z/1000)
Z = 50Ω
Results
Power (W)
1.000e-3 W
Voltage (Vpeak)
0.316218 V
Voltage (Vp-p)
0.632436 V
System
50 Ω
Formula Reference
dBm ↔ mW ()
P(mW) = 10^(dBm/10)
P(dBm) = 10×log₁₀(mW)
mW ↔ Vrms ()
Vrms = √(mW × Z / 1000)
mW = (Vrms² / Z) × 1000
Voltage
Vpeak = Vrms × √2 ≈ Vrms × 1.414
Vp-p = 2 × Vpeak
(50Ω)
0 dBm = 1 mW = 0.224 Vrms
+10 dBm = 10 mW = 0.707 Vrms
+20 dBm = 100 mW = 2.236 Vrms
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- • 75Ω: CATV/Standard
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