Score a Wi-Fi estate across coverage, SNR, channel utilisation, retries, roaming and headroom, and find the weakest dimension.
Each dimension is normalised to a 0–100 subscore, inverting the ones where lower is better, then combined with weights that reflect how strongly each predicts a user-visible problem. Coverage and SNR dominate because no amount of capacity tuning fixes a weak signal. Wireless complaints are subjective and intermittent, so a single weighted score with a named weakest dimension is what turns "the Wi-Fi is bad" into a specific piece of remediation work.
Wireless Health Score
score = 0.25×coverage + 0.20×SNR + 0.20×(100 − channel utilisation) + 0.15×(100 − 3×retry rate) + 0.10×roam success + 0.10×(2×headroom).
score = 0.25×coverage + 0.20×SNR + 0.20×(100 − channel utilisation) + 0.15×(100 − 3×retry rate) + 0.10×roam success + 0.10×(2×headroom). Each dimension is normalised to a 0–100 subscore, inverting the ones where lower is better, then combined with weights that reflect how strongly each predicts a user-visible problem. Coverage and SNR dominate because no amount of capacity tuning fixes a weak signal.
Wireless complaints are subjective and intermittent, so a single weighted score with a named weakest dimension is what turns "the Wi-Fi is bad" into a specific piece of remediation work.
This calculator takes 6 inputs: Area meeting the RSSI target, Clients meeting the SNR target, Average channel utilisation, Frame retry rate, Successful roams, Spare capacity at peak. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.