THE NUMBERS, EXPLAINED
How to use this calculator.
Accounting-period volume ledger; oil not disposed or remaining is labeled absorbed/unaccounted, not necessarily all food absorption. Purchases are charged when added.
Start with your inputs
Enter initial oil fill (l), oil top-ups during period (l), measured disposed oil (l), oil remaining in fryer at end (l), oil price (currency/l), food output (kg), disposal fee (currency/l). Keep amounts in the units shown on each field. The example is a starting point, not a recommended value.
| Input | Example value |
|---|---|
| Initial oil fill (L) | 20 |
| Oil top-ups during period (L) | 2,3 |
| Measured disposed oil (L) | 18 |
| Oil remaining in fryer at end (L) | 5 |
| Oil price (currency/L) | 2 |
| Food output (kg) | 100 |
| Disposal fee (currency/L) | 0.1 |
A worked example
With the example inputs above, oil supplied in period (l) is 25. Change the inputs to explore your own scenario.
| Result | Example answer |
|---|---|
| Oil supplied in period (L) | 25 |
| Absorbed or unaccounted oil (L) | 2 |
| Oil and disposal cost per kg output | 0.518 |
How this is calculated
Oil supplied in period (L)
Add initial fill and all top-ups.
Absorbed or unaccounted oil (L)
Subtract disposed and retained end volume from supplied oil.
Oil and disposal cost per kg output
Add supplied-oil purchase and disposal charges, then divide by food output.
Symbols and units
- a
- Initial oil fill (L)
- b
- Oil top-ups during period (L)
- c
- Measured disposed oil (L)
- d
- Oil remaining in fryer at end (L)
- e
- Oil price (currency/L)
- g
- Food output (kg)
- h
- Disposal fee (currency/L)
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
Accounting-period volume ledger; oil not disposed or remaining is labeled absorbed/unaccounted, not necessarily all food absorption. Purchases are charged when added.
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?
Oil supplied in period (L); Absorbed or unaccounted oil (L); Oil and disposal cost per kg output. 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: Accounting-period volume ledger; oil not disposed or remaining is labeled absorbed/unaccounted, not necessarily all food absorption. Purchases are charged when added.
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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