WiFi Range Calculator – Coverage Distance
Estimate WiFi range and signal strength at different distances.
About This Calculator
Estimate WiFi range and signal strength at different distances. Use the calculator above for instant results.
Worked Examples
- Signal: ~-65 to -75 dBm | Good to moderate signal
Answer: Good signal at 30m
- Very strong signal | Near-ideal throughput
Answer: Excellent near AP
- Signal likely below -85 dBm | Very weak or dead zone
Answer: Poor — likely dead zone
Who Uses This Calculator?
Plan WiFi AP placement.
Understand WiFi dead zones.
Wireless site survey estimates.
Plan office wireless coverage.
Common Mistakes to Avoid
❌ Walls dramatically reduce range
Each interior wall costs 3-5 dB. Concrete: 10-15 dB. Signal halves every 6 dB loss. One concrete wall can reduce range by 75%.
❌ 2.4 GHz vs 5 GHz range
2.4 GHz: longer range, more wall penetration, more interference. 5 GHz: shorter range, less penetration, much higher speed. 6 GHz (WiFi 6E): even shorter range.
Frequently Asked Questions
Typical indoor WiFi range?
Consumer router: 30-50m indoor. Enterprise AP: 50-100m indoor with clear line of sight. Drops quickly with walls.
Signal strength for streaming?
-67 dBm or better for HD video streaming. -70 for browsing. -80 for email. Below -80: poor performance. Below -90: drops connection.
Improve WiFi coverage?
WiFi 6 mesh systems (Eero, Orbi, Google Nest). Add APs via Ethernet backhaul. Position APs centrally. Avoid microwaves and cordless phones near 2.4 GHz.