THE NUMBERS, EXPLAINED
How to use this calculator.
All visits fall within one membership/bundle validity period, with no membership extras. Enumeration is bounded by at most 1000 bundle candidates from the 1000-visit limit.
Start with your inputs
Enter planned desk visits, single day-pass price (currency), visits included in one pass bundle, bundle price (currency), monthly unlimited membership (currency). Keep amounts in the units shown on each field. The example is a starting point, not a recommended value.
| Input | Example value |
|---|---|
| Planned desk visits | 12 |
| Single day-pass price (currency) | 25 |
| Visits included in one pass bundle | 5 |
| Bundle price (currency) | 100 |
| Monthly unlimited membership (currency) | 250 |
A worked example
With the example inputs above, single-pass total (currency) is 300. Change the inputs to explore your own scenario.
| Result | Example answer |
|---|---|
| Single-pass total (currency) | 300 |
| Cheapest bundle-and-single mix (currency) | 250 |
| Unlimited membership total (currency) | 250 |
| Cheapest supported total (currency) | 250 |
How this is calculated
Single-pass total (currency)
Buy each visit individually.
Cheapest bundle-and-single mix (currency)
Enumerate feasible whole bundle counts, including one partly used final bundle.
Unlimited membership total (currency)
Use the supplied unlimited monthly price.
Cheapest supported total (currency)
Compare unlimited membership with every bundle/single mix.
Symbols and units
- a
- Planned desk visits
- b
- Single day-pass price (currency)
- c
- Visits included in one pass bundle
- d
- Bundle price (currency)
- e
- Monthly unlimited membership (currency)
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
All visits fall within one membership/bundle validity period, with no membership extras. Enumeration is bounded by at most 1000 bundle candidates from the 1000-visit limit.
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?
Single-pass total (currency); Cheapest bundle-and-single mix (currency); Unlimited membership total (currency); Cheapest supported total (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: All visits fall within one membership/bundle validity period, with no membership extras. Enumeration is bounded by at most 1000 bundle candidates from the 1000-visit limit.
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: Describe and Identify Cost Drivers ↗
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 →