Calculadora de Cobertura Wi-Fi (FSPL)

The Wi-Fi Coverage Calculator uses the FSPL (Free-Space Path Loss) model to estimate signal loss in free space between a router and a device, considering only distance and frequency. The formula FSPL = 20·log10(d_km) + 20·log10(f_MHz) + 32.44 calculates attenuation in decibels (dB). Higher values mean weaker signals. This tool is useful for planning wireless networks, especially in open areas or with few obstacles.

To use the calculator, enter the distance between router and device (in meters or kilometers) and the signal frequency (2.4 GHz or 5 GHz, common for Wi-Fi). The result shows signal loss in dB. Note that FSPL does not account for walls, furniture, or interference; it represents the ideal scenario. In real situations, loss will be higher. Use this value as a minimum reference to estimate the maximum theoretical range.

When to use? When planning router placement in a home or office to check if a distant point will receive enough signal. Also useful for comparing performance between frequencies: 5 GHz suffers more attenuation than 2.4 GHz but offers higher speed. Caution: do not replace real measurements with this calculation, as obstacles like concrete and metal can drastically reduce range. For indoor environments, add a margin of 10 to 20 dB to the result.

This calculator is an educational and initial planning tool. For critical projects, use simulation software or practical measurements with Wi-Fi apps. Remember that transmitter power and receiver sensitivity also affect range. Check your equipment specifications for a more accurate estimate.