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Equivalent Isotropically Radiated Power Calculator — result sheet
Calculate ideal effective isotropic radiated power from transmitter power, antenna gain, and cable loss.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: EIRP watts=transmitter power×10^((antenna gain−cable loss)/10); EIRP dBm=10×log10(EIRP watts×1000).
The calculator separates a power budget from coverage, exposure, or regulatory conclusions and keeps gain and loss in decibels.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Transmitter power — minimum 1.0E-6; maximum 1000000000000
- Antenna gain — minimum -100; maximum 100
- Cable and connector loss — minimum 0; maximum 100
Worked example
| Input | Value |
|---|---|
| Transmitter power | 10 |
| Antenna gain | 6 |
| Cable and connector loss | 1 |
EIRP ≈31.62 W; ≈45.00 dBm.
Assumptions and limits
- Power is in watts and gain/loss are in decibels.
- The supplied antenna gain and losses describe the same frequency and direction.
- Terrain, polarization, mismatch, atmospheric loss, duty cycle, and regional limits are not modeled.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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