RF Power Milestone Verified: Low-Power RF Reference
-27 dBm to Watts
-27 dBm equals 1.9953e-6 Watts (0.002 mW). Real-world engineering benchmark: 1.995 µW calculated RF power level.
dBm
Reference Domain: Low-Power RF Reference
1.9953e-6 W
Milliwatts: 0.002 mW dBW: -57.00 dBW
Microwatts (μW)
2 μW
VRMS (@ 50Ω)
9.99 mV Peak-to-Peak (Vpp)
0.0283 V Voltage (dBμV)
80.0 dBμV
Exact Mathematical Derivation for -27 dBm
Step 1: P(mW) = 10^(-27 / 10) = 10^(-2.70) = 0.002 mW
Step 2: P(W) = 0.002 mW ÷ 1,000 = 1.9953e-6 Watts
Step 3: V_RMS (@ 50Ω) = √(1.995e-6 W × 50 Ω) = 9.99 mV RMS (80.0 dBμV)
Step 2: P(W) = 0.002 mW ÷ 1,000 = 1.9953e-6 Watts
Step 3: V_RMS (@ 50Ω) = √(1.995e-6 W × 50 Ω) = 9.99 mV RMS (80.0 dBμV)
Relative Delta Analysis
Adjacent Relative Power Comparisons
See how power changes when increasing or decreasing from -27 dBm by standard logarithmic step sizes:
| Delta (Δ dB) | Resulting Level (dBm) | Power in Watts | Milliwatts (mW) | Physical Effect |
|---|---|---|---|---|
| -10 dB | -37.0 dBm | 0.20 µW | 0.000 mW | 1/10th Power |
| -3 dB | -30.0 dBm | 1.00 µW | 0.001 mW | 1/2 Half Power |
| -1 dB | -28.0 dBm | 1.58 µW | 0.002 mW | -1 dB Attenuation |
| 0 dB | -27.0 dBm | 2.00 µW | 0.002 mW | Baseline Level |
| +1 dB | -26.0 dBm | 2.51 µW | 0.003 mW | +1 dB Increase |
| +3 dB | -24.0 dBm | 3.98 µW | 0.004 mW | 2× Double Power |
| +10 dB | -17.0 dBm | 19.95 µW | 0.020 mW | 10× Power |
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Knowledge Base
Frequently Asked Questions: -27 dBm
Common questions about RF power conversions, negative dBm, and voltage calculations.
-27 dBm is exactly 1.9953e-6 Watts, which equals 0.002 milliwatts (mW).
1.995 µW calculated RF power level. In RF telecommunications, this power level is standard for Low-Power RF Reference.
At 50 Ω impedance, -27 dBm produces 9.99 mV RMS, 0.0141 V Peak, 0.0283 Vpp, and 80.0 dBμV.
-27 dBm equals -57.00 dBW (calculated by subtracting the 30 dB milliwatt offset: -27 − 30).
Doubling the power (+3 dB) increases the level to -24.0 dBm, which equals 3.991e-6 W (0.004 mW).