THE NUMBERS, EXPLAINED
How to use this calculator.
Each row is one data cell after expanding any spans. Required associations are supplied by the table author; resolving IDs alone do not establish semantic correctness.
Start with your inputs
Enter required header associations per data cell (counts), verified resolving header associations per cell (counts). Keep amounts in the units shown on each field. The example is a starting point, not a recommended value.
| Input | Example value |
|---|---|
| Required header associations per data cell (counts) | 2,2,1 |
| Verified resolving header associations per cell (counts) | 2,1,0 |
A worked example
With the example inputs above, data-cell rows missing required associations is 2, 3. Change the inputs to explore your own scenario.
| Result | Example answer |
|---|---|
| Data-cell rows missing required associations | 2, 3 |
| Total missing associations | 2 |
| Data cells with complete recorded associations (%) | 33.333333 |
How this is calculated
Data-cell rows missing required associations
Compare verified association counts against required counts.
Total missing associations
Add deficits per cell.
Data cells with complete recorded associations (%)
Divide fully associated cells by all supplied data cells.
Symbols and units
- a
- Required header associations per data cell (counts)
- b
- Verified resolving header associations per cell (counts)
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
Each row is one data cell after expanding any spans. Required associations are supplied by the table author; resolving IDs alone do not establish semantic correctness.
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?
Data-cell rows missing required associations; Total missing associations; Data cells with complete recorded associations (%). 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: Each row is one data cell after expanding any spans. Required associations are supplied by the table author; resolving IDs alone do not establish semantic correctness.
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
W3C WAI Tables with Multi-Level Headers ↗
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 →