Network Performance Health Score Calculator
Score latency, jitter, loss, utilisation and availability into one weighted network health grade.
Inputs
Network Health Score
85.2/100
Grade
B — Good
Weakest Dimension
Jitter
Latency Sub-Score
77.5
Packet Loss Sub-Score
88.0
Capacity Headroom
45.0%
Step by step
Values used
Average latency = 35 ms; Average jitter = 5 ms; Packet loss = 0.2000 %; Peak link utilisation = 55 %; Measured availability = 99.95 %
Network Performance Health Score
score = 0.30 × loss + 0.25 × latency + 0.15 × jitter + 0.15 × utilisation + 0.15 × availability, each dimension normalised to 0–100.
Network Health Score
= 85.2 /100
Grade
= B — Good
Weakest Dimension
= Jitter
Latency Sub-Score
= 77.5
Packet Loss Sub-Score
= 88.0
Capacity Headroom
= 45.0
How it works
Each measurement is mapped onto a 0–100 sub-score against an engineering threshold, then combined with weights that reflect how strongly each one degrades application experience. Loss carries the most weight because TCP throughput is inversely proportional to its square root. A single grade makes network quality reportable to people who do not read ping output, and the weakest-dimension flag points straight at what to fix first.
Formula
Network Performance Health Score
score = 0.30 × loss + 0.25 × latency + 0.15 × jitter + 0.15 × utilisation + 0.15 × availability, each dimension normalised to 0–100.
- loss
- Sub-score falling 60 points per 1% of packet loss
- latency
- Sub-score falling 1.5 points per ms above 20 ms
- utilisation
- Sub-score falling 3 points per % above 70%
Frequently Asked Questions
How is Network Performance Health Score calculated?
score = 0.30 × loss + 0.25 × latency + 0.15 × jitter + 0.15 × utilisation + 0.15 × availability, each dimension normalised to 0–100. Each measurement is mapped onto a 0–100 sub-score against an engineering threshold, then combined with weights that reflect how strongly each one degrades application experience. Loss carries the most weight because TCP throughput is inversely proportional to its square root.
Why does Network Performance Health Score matter?
A single grade makes network quality reportable to people who do not read ping output, and the weakest-dimension flag points straight at what to fix first.
What values do I need to enter?
This calculator takes 5 inputs: Average latency, Average jitter, Packet loss, Peak link utilisation, Measured availability. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.
Why is loss weighted more heavily than latency?
Latency degrades experience linearly, but loss degrades TCP throughput as 1÷√p and forces retransmission timeouts. A tenth of a percent of loss can cost more throughput than an extra 50 ms of RTT.