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Everyday LifeGenerated accuracy model review: 2026-05-06
Recipe Scaler 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
- **Scaling Factor = Desired Servings / Original Servings** **New Amount = Original Amount × Scaling Factor**
Test cases
Default input regression check
Generated from the checked-in default inputs and calculate function.
Inputs
- Original Servings: 4
- Desired Servings: 10
- Ingredient Amount: 1.5
Expected outputs
- New Amount: 3.75
- Scaling Factor: 2.5
Known limitations
- Does not convert units (e.g., cups to grams). Baking times and pan sizes may need adjustment.
Assumptions
- Ingredient quantities scale linearly unless the recipe says otherwise.
- The tool does not convert between units.
- Cooking time, pan size, and seasoning intensity may need separate adjustment.
Unit handling
- Original Servings accepts numeric values.
- Desired Servings accepts numeric values.
- Ingredient Amount accepts numeric values.
Rounding rules
- Number displays use up to 2 decimal places in the calculator UI.
Version history
1.0.0 - 2026-05-06
Generated accuracy and testing page from the current recipe-scaler calculator definition.
Change log
2026-05-06
Published default regression test documentation and metadata fallbacks for Recipe Scaler.
Calculator transparency
Accuracy pages are generated from checked-in calculator definitions and can be upgraded with curated review metadata over time.