WiFi Heatmap

WiFi Heatmap is a free, browser-based predictive WiFi planning tool — a lightweight alternative to Ekahau and NetSpot for homes, small offices, and homelabs. Users upload a floorplan, trace walls by material (drywall, brick, glass, concrete), and place access points from real-vendor presets (UniFi U6/U7 Pro, TP-Link Omada, Aruba Instant On, MikroTik, ASUS, FRITZ!Box, Cambium, EnGenius, Netgear Orbi) or enter transmit power and antenna gain manually. Predicted signal strength (dBm) is rendered live across 2.4 GHz and 5 GHz using the COST-231 multi-wall propagation model, with a coverage contour and exact values on hover.

It runs entirely in the browser with no download and no account — the floorplan is stored only in local browser storage and is never uploaded. The free tier covers up to 5 access points on a single floor. A Pro upgrade (one-time €9 project pass or €29 lifetime) removes the cap and adds multi-floor 2.5D planning with ceiling attenuation, channel planning with conflict detection, and branded, client-ready PNG export.