Wi‑Fi Router Finder

Use three signal readings from three positions to estimate the router location, then use phone motion to keep estimating your distance as you move.

Manual RSSI

Current Wi‑Fi signal

−65 dBm

Good

Enter the dBm value shown in WiFiman.

Estimated router distance

— m

Need 3 points

Record three positions in a triangle first.

1 · Start motion tracking

Position X0.00 m

Position Y0.00 m

MotionOff

Keep the phone facing roughly the same direction while taking the three points. Accelerometer dead‑reckoning is approximate and will drift over time.

2 · Enter signal and record 3 positions

For the best result: point 2 should be about 1–3 m away from point 1, then move sideways for point 3 so the three points form a triangle.

Point 1Not recorded

Point 2Not recorded

Point 3Not recorded

No trilateration yet.

3 · Live position estimate

Router X—

Router Y—

MethodRSSI only

Advanced

RSSI calibration

Expected signal at 1 metre (A)

Environment factor (n)

Typical starting values: A ≈ −45 dBm and n ≈ 3 indoors.

Motion tuning

Acceleration noise threshold (m/s²)

Stationary velocity decay

Signal history

Best—

Average—

Readings0

Browser limitation
Chrome cannot read Wi‑Fi RSSI directly, so enter the current WiFiman dBm value when taking each point. Motion sensors can work in the webpage, but usually require HTTPS and a permission tap. An Android WebView wrapper can supply RSSI automatically through window.Android.getWifiRssi().