THE NUMBERS, EXPLAINED
How to use this calculator.
A record is due when age is at least the supplied retention duration. No legal rule is inferred and no deletion occurs.
Start with your inputs
Enter record ages (days), record volumes (mb), retention duration (days). Keep amounts in the units shown on each field. The example is a starting point, not a recommended value.
| Input | Example value |
|---|---|
| Record ages (days) | 10,30,50 |
| Record volumes (MB) | 2,3,5 |
| Retention duration (days) | 30 |
A worked example
With the example inputs above, due record row numbers is 2, 3. Change the inputs to explore your own scenario.
| Result | Example answer |
|---|---|
| Due record row numbers | 2, 3 |
| Due volume (MB) | 8 |
| Retained volume (MB) | 2 |
How this is calculated
Due record row numbers
Select records at or beyond their entered retention duration.
Due volume (MB)
Add the volumes of selected records.
Retained volume (MB)
Add the volumes of records younger than the threshold.
Symbols and units
- a
- Record ages (days)
- b
- Record volumes (MB)
- c
- Retention duration (days)
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
A record is due when age is at least the supplied retention duration. No legal rule is inferred and no deletion occurs.
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?
Due record row numbers; Due volume (MB); Retained volume (MB). 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: A record is due when age is at least the supplied retention duration. No legal rule is inferred and no deletion occurs.
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 →