Specialty Coffee & Espresso Brew Ratio, TDS % & Extraction Yield (EY %) Calculator

Compute coffee Brew Ratio and SCA Extraction Yield (EY %) from dry dose, liquid yield, and refractometer TDS %.

Coffee Extraction Yield (EY %)
20 % (SCA Gold-Cup Sweet Spot (18%–22%))
Beverage Brew Ratio (1 : X) 2 : 1
Dissolved Coffee Solids Mass 3.6 g
Target TDS % for 20.0% Ideal EY 10 % TDS
Inputs
⚡ Scenarios:
g
Dry ground coffee dose in the portafilter or dripper (g).
g
Final brewed liquid espresso or filter coffee weight in cup (g).
% TDS
Measured Total Dissolved Solids (TDS %: ~8%–12% espresso, ~1.3%–1.5% filter coffee).
Results & Graph
Coffee Extraction Yield (EY %)
20 % (SCA Gold-Cup Sweet Spot (18%–22%))
Beverage Brew Ratio (1 : X)
2 : 1
Dissolved Coffee Solids Mass
3.6 g
Target TDS % for 20.0% Ideal EY
10 % TDS

Coffee Extraction Yield (EY %)

Graph 1 • Espresso & Coffee Extraction Yield • Domain Architecture & Live Telemetry Maps Dry Coffee Dose Grams, Liquid Beverage Yield Grams, Refractometer Tds Pct through Espresso & Coffee Extraction Yield Formula.
FOOD, BEVERAGE & BREWING Coffee Extraction Yield (E 20 % (SCA Gold-C Beverage Brew Ratio (1 : X 2 : 1 Espresso & Coffee Extraction Yield • Component Waterfall Coffee Extraction Yield (EY %) 20 % (SCA Gold-Cup Swe Beverage Brew Ratio (1 : X) 2 : 1 Dissolved Coffee Solids Mass 3.6 g Target TDS % for 20.0% Ideal E 10 % TDS
Graph 2 • Coffee Extraction Yield (EY %) Across Dry Coffee Dose Grams Sweep (40% → 160%) Evaluates BrewRatio = BeverageWeightGrams / DryDoseGrams; ExtractionYield% = (Be across 7 operating points (current input highlighted).
0 % (SCA 27.50 % (SCA 55.00 % (SCA 50 7.20g 33.33 10.80g 25 14.40g 20 18g 16.67 21.60g 14.29 25.20g 12.50 28.80g
Graph 3 • Joint Sensitivity: Dry Coffee Dose Grams × Liquid Beverage Yield Grams Compares Coffee Extraction Yield (EY %) when Liquid Beverage Yield Grams is shifted +25% (solid) vs. −25% (dashed).
0 % (SCA 19.64 % (SCA 39.28 % (SCA --- Liquid Beverage Yield Grams @ 75% 35.71 -30% 29.41 -15% 25 +0% 21.74 +15% 19.23 +30%
Summary: A 1 : 2 brew ratio (18g in → 36g out) at 10% TDS dissolves 3.6g of coffee solids for an Extraction Yield of 20% (SCA Gold-Cup Sweet Spot (18%–22%)).
Summary: A 1 : 2 brew ratio (18g in → 36g out) at 10% TDS dissolves 3.6g of coffee solids for an Extraction Yield of 20% (SCA Gold-Cup Sweet Spot (18%–22%)).
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Formula & Mathematical Methodology: Espresso & Coffee Extraction Yield Formula

BrewRatio = BeverageWeightGrams / DryDoseGrams
ExtractionYield% = (BeverageWeightGrams × TDS%) / DryDoseGrams
BrewRatio = BeverageWeightGrams / DryDoseGrams; ExtractionYield% = (BeverageWeightGrams × TDS%) / DryDoseGrams
  • dryCoffeeDoseGrams: Dry ground coffee dose in the portafilter or dripper (g).
  • liquidBeverageYieldGrams: Final brewed liquid espresso or filter coffee weight in cup (g).
  • refractometerTdsPct: Measured Total Dissolved Solids (TDS %: ~8%–12% espresso, ~1.3%–1.5% filter coffee).

Rounding: Internal floating-point calculations preserve full precision; currency and percentage outputs round to 2 decimal places.

Worked Example: Espresso & Coffee Extraction Yield Worked Example

Compute coffee Brew Ratio and SCA Extraction Yield (EY %) from dry dose, liquid yield, and refractometer TDS %.

  1. Enter your operational, financial, or physical measurement inputs.
  2. Apply the standard domain equation: BrewRatio = BeverageWeightGrams / DryDoseGrams; ExtractionYield% = (BeverageWeightGrams × TDS%) / DryDoseGrams.
  3. Review the primary result, sensitivity metrics, and 3 interactive SVG graphs.
Result: Calculates Espresso & Coffee Extraction Yield via BrewRatio = BeverageWeightGrams / DryDoseGrams; ExtractionYield% = (BeverageWeightGrams × TDS%) / DryDoseGrams.

Frequently Asked Questions

How does the Specialty Coffee & Espresso Brew Ratio, TDS % & Extraction Yield (EY %) Calculator calculate results?

It computes BrewRatio = BeverageWeightGrams / DryDoseGrams; ExtractionYield% = (BeverageWeightGrams × TDS%) / DryDoseGrams directly in your browser and updates three custom SVG visualizations in real time.

Can I use Goal Seek to solve backwards for any input variable?

Yes. Click "🎯 Goal Seek" in the results toolbar to solve backwards for any input parameter.

Are my business and personal numbers kept private?

Yes. All calculations execute 100% locally in your browser with zero server transmission.

Everyday Life · Food, Beverage & Brewing

Specialty Coffee & Espresso Brew Ratio, TDS % & Extraction Yield (EY %) Calculator: inputs, method, and how to read the result

Compute coffee Brew Ratio and SCA Extraction Yield (EY %) from dry dose, liquid yield, and refractometer TDS %.

Choose inputs for the case you are checking

The defaults are illustrative. Replace them with values for your case and keep the units shown beside each field.

  • Dry Coffee Dose Grams: Dry ground coffee dose in the portafilter or dripper (g).
  • Liquid Beverage Yield Grams: Final brewed liquid espresso or filter coffee weight in cup (g).
  • Refractometer Tds Pct: Measured Total Dissolved Solids (TDS %: ~8%–12% espresso, ~1.3%–1.5% filter coffee).

What the calculation includes

With the default values shown, Coffee Extraction Yield (EY %) is 20 % (SCA Gold-Cup Sweet Spot (18%–22%)). The calculation follows Espresso & Coffee Extraction Yield Formula; the formula and variable definitions above show how the inputs combine.

One-input check: With the other defaults held constant, changing Dry Coffee Dose Grams from 18 g to 20 g changes Coffee Extraction Yield (EY %) from 20 % (SCA Gold-Cup Sweet Spot (18%–22%)) to 18 % (SCA Gold-Cup Sweet Spot (18%–22%)). This is a comparison inside the calculator's stated model, not a prediction.

Where to use caution

  • Uses industry-standard APICS/ASCM supply chain, lean manufacturing, and consumer physics formulas.
  • Actual commercial freight tariffs, marketplace commissions, and utility rates vary by carrier and contract.

Scope: Global Supply Chain, Business & Consumer Standard Check the assumptions and limitations against your situation before relying on the estimate.

More in Everyday Life: ROI Calculator (Return on Investment), Percentage Calculator.