Wi-Fi Heatmap Planner
Map Wi-Fi access points on floor plans with predictive signal strength, estimated SNR, coverage, and channel-overlap heatmaps
Your floor plan stays in this browser; no upload to a server.
Predictive estimate only. Wall loss and signal are simplified; validate planned coverage with an on-site RF survey.
Free predictive Wi-Fi heatmap planner
Upload a floor plan, set its scale, place wireless access points, and preview estimated signal-strength, SNR, coverage, or channel-overlap heatmaps. The floor plan and project stay in your browser; the file is not uploaded to NETCUE.
How to create a Wi-Fi heatmap
- Upload a PNG, JPG, or PDF floor plan. For PDFs, the first page is used.
- Calibrate the drawing by marking a known distance and entering its length in metres.
- Place APs, select a band, channel, transmit power, and antenna gain.
- Optionally draw walls and choose an estimated material attenuation.
- Review signal strength, estimated SNR, coverage, or channel overlap, then export a PNG, PDF report, or editable project file.
Understand the estimate
This planner uses an indoor path-loss estimate and configurable wall-loss assumptions. Estimated SNR is calculated from modeled signal strength and your assumed noise floor; it is not measured RF data. Actual Wi-Fi performance is affected by construction details, furniture, antenna patterns, device radios, reflections, neighboring networks, and many other conditions that a simple floor-plan model cannot fully represent.
Use the heatmap as an early design aid—not as a measured survey or a guarantee of coverage. Confirm a deployment with an on-site RF survey and measurements. For professional wireless planning and installation, see NETCUE's network design service.
Frequently asked questions
No. It is a predictive estimate based on the floor plan, AP settings, and wall-loss assumptions you enter. A measured survey requires real RF measurements at the site.
No. The image is processed in your browser. It is only included in a project file if you choose to download that file.
No. The tool estimates SNR by subtracting the noise floor you assume from its modeled signal strength. Real noise and interference vary by location, channel, time, and radio hardware.
No. Wall attenuation is a simplified user-selected estimate. Furniture, construction variation, antenna patterns, client devices, reflections, and neighboring networks can materially change real results.
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