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Everyday LifeGenerated accuracy model review: 2026-05-06
Coffee Ratio 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
- **Coffee Needed = Water Amount / Ratio**. Example: For a 1:16 ratio with 500ml water, use 500 / 16 = 31.25g of coffee.
Test cases
Default input regression check
Generated from the checked-in default inputs and calculate function.
Inputs
- Water Amount: 500 ml/g
- Ratio (1:?): 16
Expected outputs
- Coffee Needed: 31.3 grams
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
- The ratio is weight-based and the water input is treated as grams or milliliters.
- A kitchen scale gives a more accurate result than scoops.
- Grind size, extraction time, and roast level are not part of the calculation.
Unit handling
- Water Amount accepts values in ml/g.
- Ratio (1:?) accepts numeric values.
- Coffee Needed is displayed in grams.
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 coffee-calculator calculator definition.
Change log
2026-05-06
Published default regression test documentation and metadata fallbacks for Coffee Ratio.
Calculator transparency
Accuracy pages are generated from checked-in calculator definitions and can be upgraded with curated review metadata over time.