Coffee Calculator
### Specialty Coffee Association (SCA) Golden Cup Brewing Standards The SCA Golden Cup Standard defines the optimal relationship between ground coffee mass, water volume, and extraction: -.
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📐 Formula
💡 Practical Example
A barista brewing an 800 mL French press carafe uses a 1:15 ratio, measuring exactly 53.3 grams of coarsely ground coffee to produce 693 mL of rich, full-bodied coffee.
📖 About Coffee Calculator
Specialty Coffee Association (SCA) Golden Cup Brewing Standards
The SCA Golden Cup Standard defines the optimal relationship between ground coffee mass, water volume, and extraction:
- Standard Brew Ratio Formula:
Coffee Grounds (g) = Water Volume (mL)R
- Water Retention in Spent Grounds: Ground coffee absorbs approximately 2.0 mL of water per gram of dry grounds, meaning 500 mL of water poured over 30 g of coffee yields approximately 440 mL of brewed coffee in the server.
Barista Equipment Reference Ratios & Grind Sizes
- Pour Over / Hario V60: 1:16.0 to 1:16.7 | Medium-Fine (table salt) | 92--96^
- French Press (Immersion): 1:15.0 | Coarse (sea salt) | 94--96^ (4 min brew)
- AeroPress: 1:13.0 to 1:15.0 | Medium-Fine | 85--90^
- Chemex: 1:16.5 | Medium-Coarse (kosher salt) | 93--96^
- Cold Brew Concentrate: 1:8.0 | Extra Coarse | Room temp / Cold (12--18 hrs)
- Espresso Double Shot: 1:2.0 (18g in 36g out) | Fine (powder) | 90--93^ (25–30 sec)
How to Use This Calculator
Enter your Brewing Method / Equipment — select from Pour Over / Hario V60 (1:16.0 - Medium-Fine), French Press / Immersion (1:15.0 - Coarse), AeroPress (1:14.0 - Medium-Fine), Desired Water Volume (mL / grams) (e.g. 500), Custom Brew Ratio (1:X, leave 0 for preset) (e.g. 16), and Barista Brewing Benchmark — select from Custom Brew Volume, V60 Pour Over 2 Cups (500 mL Water / 1:16.7 Ratio), French Press Carafe (800 mL Water / 1:15.0 Ratio). Results update instantly — no submit button needed. Use metric or imperial units as labeled. For the most accurate result, measure height and weight in the morning without shoes.
The Formula
SCA Coffee Grounds Calculation: Grounds = Water / Ratio
Worked Example
A barista brewing an 800 mL French press carafe uses a 1:15 ratio, measuring exactly 53.3 grams of coarsely ground coffee to produce 693 mL of rich, full-bodied coffee.
Understanding Your Result
Health calculations based on standard clinical formulas give a population-reference estimate — individual variation exists. Compare your result to the reference ranges provided using validated sources (WHO, CDC, NIH, or specialty clinical guidelines). A single measurement is a starting point; meaningful health trends emerge from tracking the same metric over time under consistent conditions. For values outside reference ranges, consult a qualified healthcare provider before making changes to diet, exercise, or medication.
💡 Expert Health Guidance & Clinical Context
- This calculator uses clinically validated formulas and population reference data published by the WHO and NIH. Results are screening estimates, not medical diagnoses.
- Consult a licensed healthcare provider before making any changes to diet, medication, or exercise based on these results — individual variation is significant.
- Genetics, chronic conditions, and concurrent medications can dramatically affect what a "normal" result means for a specific individual.
- Track your results over time: a single data point is less meaningful than a trend measured consistently across multiple weeks or months.
- The CDC recommends adults receive routine health screenings at least annually. Use these calculations to prepare informed questions for your physician.
- Body composition, lifestyle factors, and stress levels all interact with the metrics shown here. No single number captures your full health picture.
- For pediatric or geriatric populations, reference ranges may differ significantly from the adult standards used in general calculators.
- Always cross-reference results with laboratory tests, clinical examinations, and professional medical evaluation before acting on any finding.
Results are for informational and educational purposes only. Always verify critical decisions with a qualified professional.