dBm to Watt

About This Tool

This tool provides a precise, fast translation from dBm to watts for RF power analysis. It accepts a single numeric input in dBm and outputs power in watts, enabling direct use in link-budget calculations and transmitter comparisons. The core calculation uses P(W) = 10^((P_dBm - 30)/10), equivalent to P(mW) = 10^(P_dBm/10) and P(W) = P(mW)/1000. Examples: 0 dBm yields 0.001 W; -30 dBm yields 0.000001 W. The tool validates inputs within -100 to 50 dBm to prevent nonsensical results and returns a numeric power value with up to six decimal places for engineering precision. It treats dBm as decibels relative to 1 mW, aligning with standard RF practice. Use cases include RF link-budget checks, transmitter selection, compliance assessments, and educational demonstrations. Unique value lies in real-time, exact conversions without manual logarithmic calculation, reducing error-prone steps in field and lab workflows. Core features include strict numeric input, direct watt output, and explicit formula exposure for transparency. Typical workflows involve entering a measured or specified dBm value and using the resulting watt value in further RF calculations, simulations, or documentation.

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