THE NUMBERS, EXPLAINED
How to use this calculator.
Descriptive giveaway audit only. Does not determine whether a pack meets any labeling or acceptance regulation.
Start with your inputs
Enter measured pack weights (g), declared target weight (g), ingredient cost (currency/kg). Keep amounts in the units shown on each field. The example is a starting point, not a recommended value.
| Input | Example value |
|---|---|
| Measured pack weights (g) | 510,500,520 |
| Declared target weight (g) | 500 |
| Ingredient cost (currency/kg) | 4 |
A worked example
With the example inputs above, positive overfill by pack (g) is 10, 0, 20. Change the inputs to explore your own scenario.
| Result | Example answer |
|---|---|
| Positive overfill by pack (g) | 10, 0, 20 |
| Total giveaway (g) | 30 |
| Giveaway ingredient cost (currency) | 0.12 |
How this is calculated
Positive overfill by pack (g)
Count only weight above the declared target.
Total giveaway (g)
Add positive overfill without offsetting underfills.
Giveaway ingredient cost (currency)
Convert giveaway grams to kilograms and apply cost.
Symbols and units
- a
- Measured pack weights (g)
- b
- Declared target weight (g)
- c
- Ingredient cost (currency/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
Descriptive giveaway audit only. Does not determine whether a pack meets any labeling or acceptance regulation.
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?
Positive overfill by pack (g); Total giveaway (g); Giveaway ingredient cost (currency). 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: Descriptive giveaway audit only. Does not determine whether a pack meets any labeling or acceptance regulation.
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: Measures of the Center of the Data ↗
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 →