Tools

VoIP call-quality indicator

Last reviewed September 4, 2026

Enter the results from a network test. The tool checks three common causes of poor calls:

Latency: how long a round trip takes.
Jitter: how much packet timing changes.
Packet loss: how much voice data never arrives.

VoIP call-quality indicator

Enter measurements from a network test. Latency is the full round trip. This simple score is a guide, not a Mean Opinion Score (MOS), and your measurements stay in this browser.

How the score is calculated

The score starts at 100. It subtracts 0.2 points for each millisecond of latency above 100 ms, 0.7 points for each millisecond of jitter above 20 ms, and 12 points for each percentage point of packet loss. Results are Good (85–100), Fair (65–84), or Needs attention (0–64). This is not an implementation of ITU-T G.107.

Last reviewed: 4 September 2026.

Round-trip latency (ms)

Jitter (ms)

Packet loss (%)

Enter all three measurements, then check the result.

How to use the result

Test when the network is busy, because a quiet-time result may look better than real use. If the result needs attention, start with the measurement named by the tool and then make a test call.

This is a simple guide, not a Mean Opinion Score (MOS), and it cannot tell you exactly what a caller heard. A good result also does not rule out one-way audio, Wi-Fi roaming, codec problems, or short network faults.