> Source: https://amayakavya.com/labs/rf

# RF & Telecom Calculator

Working tools for radio and telecommunications: wavelength and frequency, power in dBm, mW and W, free-space path loss, channel capacity, and a link budget. Everything runs in your browser.

## Wavelength & frequency

Convert between frequency and wavelength ( = c / f).

Mode Frequency to wavelength Wavelength to frequency
Frequency (MHz)
Wavelength (m)

## Power: dBm / mW / W

Enter a power in any unit; see it in all three.

Value
Unit dBm mW W

## Free-space path loss

Ideal line-of-sight loss between two antennas.

Distance (km)
Frequency (MHz)

## Channel capacity

Shannon-Hartley limit, plus the Nyquist rate if you give a number of signal levels.

Bandwidth (MHz)
SNR (dB)
Signal levels M (optional)

## Link budget

Received power and margin. Total loss includes path loss and any other losses, in dB.

Transmit power (dBm)
Tx antenna gain (dBi)
Rx antenna gain (dBi)
Total loss (dB)
Rx sensitivity (dBm, optional)

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