THE NUMBERS, EXPLAINED
How to use this calculator.
Independent lot mass ledger; positive unaccounted material indicates unexplained consumption, negative indicates recorded outputs exceed issues.
Start with your inputs
Enter ingredient issued by lot (kg), recorded production use by lot (kg), returns to stock by lot (kg), measured losses by lot (kg). Keep amounts in the units shown on each field. The example is a starting point, not a recommended value.
| Input | Example value |
|---|---|
| Ingredient issued by lot (kg) | 50,30 |
| Recorded production use by lot (kg) | 40,20 |
| Returns to stock by lot (kg) | 5,7 |
| Measured losses by lot (kg) | 2,1 |
A worked example
With the example inputs above, unaccounted material by lot (kg) is 3, 2. Change the inputs to explore your own scenario.
| Result | Example answer |
|---|---|
| Unaccounted material by lot (kg) | 3, 2 |
| Total unexplained material (kg) | 5 |
How this is calculated
Unaccounted material by lot (kg)
Subtract production use, returns and measured losses from issued mass for each lot.
Total unexplained material (kg)
Subtract all accounted uses from all issues.
Symbols and units
- a
- Ingredient issued by lot (kg)
- b
- Recorded production use by lot (kg)
- c
- Returns to stock by lot (kg)
- d
- Measured losses by lot (kg)
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
Independent lot mass ledger; positive unaccounted material indicates unexplained consumption, negative indicates recorded outputs exceed issues.
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?
Unaccounted material by lot (kg); Total unexplained material (kg). 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: Independent lot mass ledger; positive unaccounted material indicates unexplained consumption, negative indicates recorded outputs exceed issues.
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.
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