Network Performance Health Score Calculator
Score latency, jitter, loss, utilisation and availability into one weighted network health grade.
About Network Performance Health Score Calculator
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%
Worked example
With the default values below, Network Performance Health Score Calculator returns Network Health Score of 85.2. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Average latencyminimum 0 ms
- 35 ms
- Average jitterminimum 0 ms
- 5 ms
- Packet lossaccepts 0–100 %
- 0.2 %
- Peak link utilisationaccepts 0–100 %
- 55 %
- Measured availabilityaccepts 90–100 %
- 99.95 %
Results
- 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
- 1Values used
- 2Network Performance Health Score
- 3Network Health Score= 85.2 /100
- 4Grade= B — Good
- 5Weakest Dimension= Jitter
- 6Latency Sub-Score= 77.5
- 7Packet Loss Sub-Score= 88.0
- 8Capacity Headroom= 45.0
Assumptions and limits
- The result is derived only from the 5 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
- Figures are rounded for display to 1 decimal place, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
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.