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Everyday LifeGenerated accuracy model review: 2026-05-06
Unit Price Comparison accuracy and testing
This page documents how Calwarden builds trust for this calculator: source notes, regression-style default tests, limitations, assumptions, unit handling, rounding, and visible change history.
Formula source
- **Unit Price = Total Price / Quantity** The item with the lower Unit Price is the better value mathematically.
Test cases
Default input regression check
Generated from the checked-in default inputs and calculate function.
Inputs
- Price Item A: $5.99
- Qty/Size Item A: 12 oz
- Price Item B: $10.99
- Qty/Size Item B: 24 oz
Expected outputs
- Best Buy: Item B
- Unit Price A: $0.50
- Unit Price B: $0.46
Known limitations
- This page documents the checked-in calculator logic and does not certify results for every real-world edge case.
- Use the result as a planning estimate unless the calculator page states a stricter purpose.
Assumptions
- Both items use the same unit of measure before comparison.
- Quantity values are positive and represent the usable amount in the package.
- Spoilage, storage, and brand preference are not factored into the result.
Unit handling
- Price Item A accepts values in $.
- Qty/Size Item A accepts values in oz.
- Price Item B accepts values in $.
- Qty/Size Item B accepts values in oz.
- Unit Price A is displayed as currency.
- Unit Price B is displayed as currency.
Rounding rules
- Number displays use up to 2 decimal places in the calculator UI.
- Currency outputs are displayed with standard US dollar formatting.
Version history
1.0.0 - 2026-05-06
Generated accuracy and testing page from the current unit-price-calculator calculator definition.
Change log
2026-05-06
Published default regression test documentation and metadata fallbacks for Unit Price Comparison.
Calculator transparency
Accuracy pages are generated from checked-in calculator definitions and can be upgraded with curated review metadata over time.