Free Packet Loss Test
— Check Your Internet Now
Run a real-time packet loss test, ping test, and jitter test directly in your browser. Diagnose dropped packets, high latency, and unstable connections — no software to install.
What is packet loss — and why does it matter?
Network packet loss occurs when one or more data packets travelling across an internet connection fail to reach their destination. Even small amounts of internet packet loss can dramatically affect video calls, gaming, and streaming — because unlike web browsing, these applications cannot wait to retransmit lost data.
What is a good packet loss percentage?
0% is the gold standard for all internet use cases. Anything above 2% will be noticeable in real-time applications. At 5%+, calls drop, games lag, and streams buffer.
What causes high packet loss?
The most common causes are WiFi interference, a faulty router or modem, ISP network congestion, damaged ethernet cables, or overloaded network switches. Running this packet loss checker helps pinpoint whether the problem is local or upstream.
High packet loss but internet still works?
This happens because web browsers use TCP, which silently retransmits lost packets. But gaming, video calls, and VoIP use UDP — which cannot retransmit. So your browser feels fine while your game lags badly.
How to check packet loss on PC
Use our free online packet loss test above — no download, no install. On Windows you can also open Command Prompt and run ping -n 100 1.1.1.1. On Mac or Linux use Terminal with ping -c 100 1.1.1.1.
Packet loss test for gaming
Competitive games are among the most sensitive applications to packet loss. Use our real-time network packet loss monitor before and after a gaming session to diagnose rubber-banding, teleporting enemies, and input lag.
How to fix high packet loss
If your packet loss test shows results above 1%, work through these fixes in order. Most cases are resolved at home without needing to contact your ISP.
Restart your router & modem
Power-cycle both devices — unplug for 30 seconds and restart. This clears memory, resets connections, and resolves the majority of temporary packet loss issues.
Switch to a wired ethernet connection
WiFi is the single biggest cause of packet loss at home. Plugging directly into your router with an ethernet cable eliminates wireless interference and dramatically improves stability.
Check for damaged cables
Inspect ethernet and coax cables for kinks, fraying, or loose connectors. A damaged cable can cause intermittent packet loss that's hard to trace — swap the cable to rule it out.
Reduce network congestion
Disconnect other devices from your network while testing. Background downloads, streaming, and smart home devices all compete for bandwidth and can cause congestion-related packet loss.
Update router firmware
Outdated router firmware can cause instability and dropped packets. Log into your router's admin panel and check for firmware updates — many routers update automatically when prompted.
Contact your ISP
If packet loss persists after all local fixes, the issue is likely upstream in your ISP's network. Run this test multiple times and share the results with your ISP — they can diagnose line-level issues remotely.