Work out ble range estimate instantly with clear inputs, formula shown and shareable results.
BLE at 2.4 GHz loses 40 dB in the first metre, so the link budget of roughly 90 dB translates into tens of metres indoors. Every wall adds 5-15 dB, which is why the effective path loss exponent rises from 2 in the open to over 4 through partitions.
BLE range
budget = Ptx + antenna gain - sensitivity - fade margin; range from log-distance path loss with environment exponent n
It is the calibration constant for distance estimation and beacon proximity. Measuring it directly is far more reliable than calculating it.
Only in free space with coded PHY and good antennas. Real indoor deployments with chip antennas and a body in the way see 10-30 m.