THE NUMBERS, EXPLAINED
How to use this calculator.
Each pair requires two magnets with opposite-facing poles. Magnet dimensions, retention strength and suitability are supplied externally.
Start with your inputs
Enter assembly joints by model group (counts), specified magnet pairs per joint (counts), available magnets (count). Keep amounts in the units shown on each field. The example is a starting point, not a recommended value.
| Input | Example value |
|---|---|
| Assembly joints by model group (counts) | 4,6 |
| Specified magnet pairs per joint (counts) | 1,2 |
| Available magnets (count) | 20 |
A worked example
With the example inputs above, required magnet pairs (count) is 16. Change the inputs to explore your own scenario.
| Result | Example answer |
|---|---|
| Required magnet pairs (count) | 16 |
| Required individual magnets (count) | 32 |
| Additional magnets to purchase (count) | 12 |
| Polarity checklist | Mark one outward pole on each of 16 pairs; match each partner opposite before installation. |
How this is calculated
Required magnet pairs (count)
Multiply joints by pairs per joint and add.
Required individual magnets (count)
Use two magnets per pair.
Additional magnets to purchase (count)
Subtract stock from required individual magnets.
Polarity checklist
Provide one opposite-pole verification for every specified pair.
Symbols and units
- a
- Assembly joints by model group (counts)
- b
- Specified magnet pairs per joint (counts)
- c
- Available magnets (count)
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 pair requires two magnets with opposite-facing poles. Magnet dimensions, retention strength and suitability are supplied externally.
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?
Required magnet pairs (count); Required individual magnets (count); Additional magnets to purchase (count); Polarity checklist. 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 pair requires two magnets with opposite-facing poles. Magnet dimensions, retention strength and suitability are supplied externally.
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 Prealgebra 2e — arithmetic and proportions ↗
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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