THE NUMBERS, EXPLAINED
How to use this calculator.
Uncompressed fixed-size records; metadata, indexes and replication are excluded. Cleanup removes all generations except the newest.
Start with your inputs
Enter fixture cases (count), records per case (count), bytes per record (bytes), retained fixture generations (count). Keep amounts in the units shown on each field. The example is a starting point, not a recommended value.
| Input | Example value |
|---|---|
| Fixture cases (count) | 20 |
| Records per case (count) | 100 |
| Bytes per record (bytes) | 500 |
| Retained fixture generations (count) | 3 |
A worked example
With the example inputs above, one fixture generation (bytes) is 1,000,000. Change the inputs to explore your own scenario.
| Result | Example answer |
|---|---|
| One fixture generation (bytes) | 1,000,000 |
| Retained storage (bytes) | 3,000,000 |
| Old-generation cleanup volume (bytes) | 2,000,000 |
How this is calculated
One fixture generation (bytes)
Multiply cases, records and record width.
Retained storage (bytes)
Multiply one generation by retained generations.
Old-generation cleanup volume (bytes)
Remove all but one retained generation.
Symbols and units
- a
- Fixture cases (count)
- b
- Records per case (count)
- c
- Bytes per record (bytes)
- d
- Retained fixture generations (count)
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
Uncompressed fixed-size records; metadata, indexes and replication are excluded. Cleanup removes all generations except the newest.
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?
One fixture generation (bytes); Retained storage (bytes); Old-generation cleanup volume (bytes). 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: Uncompressed fixed-size records; metadata, indexes and replication are excluded. Cleanup removes all generations except the newest.
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 Prealgebra 2e — arithmetic and proportions ↗
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 →