THE NUMBERS, EXPLAINED
How to use this calculator.
Measured demands and concurrency are supplied, including overhead if relevant. A ratio below one does not guarantee latency or service quality.
Start with your inputs
Enter concurrent users by application class, measured average bandwidth per user by class (mbps), usable internet link capacity (mbps), assumed burst multiplier. Keep amounts in the units shown on each field. The example is a starting point, not a recommended value.
| Input | Example value |
|---|---|
| Concurrent users by application class | 20,5 |
| Measured average bandwidth per user by class (Mbps) | 2,10 |
| Usable internet link capacity (Mbps) | 100 |
| Assumed burst multiplier | 1.5 |
A worked example
With the example inputs above, mean scenario bandwidth (mbps) is 90. Change the inputs to explore your own scenario.
| Result | Example answer |
|---|---|
| Mean scenario bandwidth (Mbps) | 90 |
| Burst scenario bandwidth (Mbps) | 135 |
| Burst contention ratio | 1.35 |
| Burst capacity gap (Mbps) | 35 |
How this is calculated
Mean scenario bandwidth (Mbps)
Add application-class concurrent user demand.
Burst scenario bandwidth (Mbps)
Apply the entered common burst factor.
Burst contention ratio
Divide burst demand by usable link capacity.
Burst capacity gap (Mbps)
Report demand above usable link speed.
Symbols and units
- a
- Concurrent users by application class
- b
- Measured average bandwidth per user by class (Mbps)
- c
- Usable internet link capacity (Mbps)
- d
- Assumed burst multiplier
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions and limits
Measured demands and concurrency are supplied, including overhead if relevant. A ratio below one does not guarantee latency or service quality.
Calculations use the values you enter. Blank or invalid inputs show an error instead of silently substituting zero. Results are displayed to useful precision; calculations retain the underlying numeric precision.
Questions about this tool
What does the result tell me?
Mean scenario bandwidth (Mbps); Burst scenario bandwidth (Mbps); Burst contention ratio; Burst capacity gap (Mbps). The result applies to the method and inputs described above. Check the units and assumptions before using it in a decision.
Why might another calculator differ?
Differences in units, rounding, timing or model definitions can produce different answers. Compare the input definitions and the method, rather than only the final number. For this tool: Measured demands and concurrency are supplied, including overhead if relevant. A ratio below one does not guarantee latency or service quality.
Are my inputs stored or sent to AI?
Calculations on this page happen in your browser. The separate AI question finder sends its submitted conversation to OpenAI; these calculator fields are not sent. Favourites and recent tool names are stored locally. A shared link contains the inputs you choose to include.
Further reading
OpenStax: Describe and Identify Cost Drivers ↗
Background reading; this does not imply endorsement or independent review of SumFizz.
Review status
Software example and browser checks are recorded in our quality report. No external expert review is claimed. Created with coding assistance; calculations run as ordinary browser code.
Read the quality report →