What Is My Connection Speed & Signal
Check your live connection quality, latency and network type. Signal-strength meter.
How to use this tool
- Open this page — it runs instantly in your browser, no signup or install.
- Allow any permission prompt if asked; everything stays on your device.
- Use the on-screen controls — results update live.
Check your live connection quality, latency and network type. Signal-strength meter.
How it works
This widget reads live network information directly from your browser using the Network Information API and measures round-trip latency to a lightweight endpoint. It displays your current connection type (Wi-Fi, cellular, Ethernet), effective speed tier (4G, 3G, etc.), and estimated downlink bandwidth without sending your data to any external service.
Signal quality is inferred from the effective connection type and round-trip time (RTT) reported by your browser. A low RTT and high downlink value indicate a strong, fast connection, while a high RTT suggests congestion or a weak signal.
Use this tool when troubleshooting slow loading pages, deciding whether to stream video, or confirming you switched from mobile data to Wi-Fi. Results reflect the connection active at the moment you load the page — refresh for an updated reading.
Worked example
Check whether you are on Wi-Fi or mobile data
- Open the tool on the device in question.
- Read the 'Connection Type' field — it shows wifi, cellular, or ethernet.
- Check the 'Effective Type' field to see the speed tier (e.g., 4g, 3g).
- Compare the displayed downlink value against your expected plan speed.
You can confirm the device is on Wi-Fi with a 4G-equivalent speed and low latency, or identify that it fell back to a slow cellular connection.
Common mistakes to avoid
- Refreshing once and treating the RTT reading as a permanent benchmark — network conditions fluctuate, so check multiple times for accuracy.
- Confusing effective connection type with physical technology — a device on LTE may still show '3g' if the signal is poor.
- Expecting the downlink figure to match an ISP speed test — this is an estimate from the browser, not a saturated download measurement.
Key terms
- RTT (Round-Trip Time)
- The time in milliseconds for a data packet to travel from your device to a server and back. Lower is better.
- Downlink
- The estimated download bandwidth of your current connection, reported in Megabits per second (Mbps).
- Effective Connection Type
- A browser-determined tier (slow-2g, 2g, 3g, 4g) based on RTT and downlink, not the raw technology.
Frequently asked questions
- Can a website read my Wi-Fi signal strength?
- No — the web platform does not expose raw Wi-Fi RSSI/dBm for privacy reasons. This tool estimates connection quality from live latency and the Network Information API instead.