THE NUMBERS, EXPLAINED
How to use this calculator.
Workload only, based on your measured setting times and quoted rate. No setting design, strength or adequacy is assessed.
Start with your inputs
Enter stone-setting counts by type, measured minutes per setting by type, available bench hours per day, quoted labour rate (currency/hour). Keep amounts in the units shown on each field. The example is a starting point, not a recommended value.
| Input | Example value |
|---|---|
| Stone-setting counts by type | 10,5 |
| Measured minutes per setting by type | 6,12 |
| Available bench hours per day | 2 |
| Quoted labour rate (currency/hour) | 30 |
A worked example
With the example inputs above, total setting labour (hours) is 2. Change the inputs to explore your own scenario.
| Result | Example answer |
|---|---|
| Total setting labour (hours) | 2 |
| Bench days required | 1 |
| Labour quote (currency) | 60 |
How this is calculated
Total setting labour (hours)
Multiply each setting count by minutes, sum and convert to hours.
Bench days required
Divide total minutes by daily bench capacity and round up.
Labour quote (currency)
Multiply total hours by quoted rate.
Symbols and units
- a
- Stone-setting counts by type
- b
- Measured minutes per setting by type
- c
- Available bench hours per day
- d
- Quoted labour rate (currency/hour)
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
Workload only, based on your measured setting times and quoted rate. No setting design, strength or adequacy is assessed.
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?
Total setting labour (hours); Bench days required; Labour quote (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: Workload only, based on your measured setting times and quoted rate. No setting design, strength or adequacy is assessed.
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.
Read the quality report →