Convert RF power between dBm, watts, milliwatts, and dBW. Interactive calculator with power conversion table, dBm to dBuV formula, and common RF power level reference.
Interactive Power Converter
RF Power Unit Converter
dBm
—
dBW
—
Watts
—
milliwatts
—
dBuV (in 50 Ω)
—
Common RF Power Level Reference
dBm
Watts
Typical Use
−174 dBm/Hz
4×10⁻²¹ W/Hz
Thermal noise floor at 290 K
−100 dBm
0.1 pW
Typical receiver sensitivity (LTE)
−60 dBm
1 nW
Weak RF signal, far-field measurement
0 dBm
1 mW
VNA source power (typical)
+10 dBm
10 mW
BT Class 1 max TX power
+20 dBm
100 mW
WiFi access point typical TX
+30 dBm
1 W
Small PA, LTE handset peak TX
+33 dBm
2 W
LTE Band 8 max EIRP (handset)
+43 dBm
20 W
Small cell PA output
+53 dBm
200 W
Macro base station carrier power
Power Formulas
P (dBm) = 10·log₁₀(P_mW)
P (dBW) = P(dBm) − 30
P (dBuV) at 50Ω = P(dBm) + 107 [V_rms in µV across 50 Ω]
P (dBuV/m) = EIRP(dBm) + 20·log₁₀(f_MHz) + 74.77 [at 1 m distance]