THE NUMBERS, EXPLAINED
How to use this calculator.
One count per garment over a common observation window. Rates describe the log only and do not predict future wear.
Start with your inputs
Enter wear counts by garment, observation days. Keep amounts in the units shown on each field. The example is a starting point, not a recommended value.
| Input | Example value |
|---|---|
| Wear counts by garment | 0,2,4 |
| Observation days | 28 |
A worked example
With the example inputs above, wears per garment per week is 0, 0.5, 1. Change the inputs to explore your own scenario.
| Result | Example answer |
|---|---|
| Wears per garment per week | 0, 0.5, 1 |
| Unused garments | 1 |
| Total recorded wears | 6 |
How this is calculated
Wears per garment per week
Divide each count by observed days and multiply by seven.
Unused garments
Count garments with zero recorded wears.
Total recorded wears
Sum all garment wear counts.
Symbols and units
- a
- Wear counts by garment
- b
- Observation 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
One count per garment over a common observation window. Rates describe the log only and do not predict future wear.
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?
Wears per garment per week; Unused garments; Total recorded wears. 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: One count per garment over a common observation window. Rates describe the log only and do not predict future wear.
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: Solve proportions and their applications ↗
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 →