Use this electronics calculation for a first-pass component, converter, signal, motor, or sensor estimate when the stated operating conditions and units match the device data.

Input power (W)

Required number input.

Output power (W)

Required number input.

Express a power ratio as a decibel gain. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Gain (dB)

The resulting gain returned as a number.

• Compact electronics formulas omit some combination of tolerances, temperature drift, bandwidth, loading, parasitics, noise spectrum, nonlinearity, clipping, calibration, layout, and device-specific limits. Typical datasheet values are not guaranteed limits.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Check the result against the current datasheet and worst-case operating corners, then verify the circuit or measurement with simulation and bench testing where failure matters.

• Voltage Gain dB

  Express a voltage ratio as a decibel gain.

• Gain dB To Linear

  Convert an antenna power gain in decibels to a linear power ratio.

• Linear Gain To dB

  Convert a linear antenna power ratio to an equivalent gain in decibels.