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Everyday Formula Verification

7 of the 7 published everyday calculators have an automated formula test suite. Each row gives one calculator's passing cases and the kinds of check behind them.

Last updated 16 September 2026

This is the everyday section of the formula verification report, which explains what each kind of case tests, how the counts are produced and what they do not prove. Rows run from the largest suite to the smallest; each row's address ends in the calculator's slug, so one calculator's evidence can be linked and cited on its own. The test file behind every row, and the per-kind numbers, are in the machine-readable report.

Every everyday calculator, with its case mix

Automated formula-test coverage for the Everyday calculators: passing cases and case mix per calculator
CalculatorCasesCase mix
Ring Size Converter9315 golden · 12 boundary · 11 property · 55 structural
Baker’s Percentage Calculator8228 independent · 11 golden · 18 boundary · 16 property · 9 structural
Bra Size Converter7110 golden · 11 boundary · 16 property · 34 structural
Shoe Size Converter6710 golden · 11 boundary · 26 property · 20 structural
Clothing Size Converter625 independent · 4 golden · 9 boundary · 10 property · 34 structural
Cake Pan Size Converter609 independent · 6 golden · 9 boundary · 9 property · 27 structural
Bicycle Tire Pressure Calculator171 independent · 4 golden · 9 boundary · 3 property
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Questions about this policy?Published by Calculator Matters (calculatormatters.com). Last reviewed 16 September 2026. Created and maintained by Jay Sudha (about Calculator Matters). These pages are reviewed regularly, and questions are always welcome.
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Educational estimate — not financial, tax, legal, or professional advice. Formulas and assumptions are shown on the page above.