Coffee Extraction Yield (%) & Total Dissolved Solids (TDS) Calculator

Convert refractometer TDS % and beverage weight into SCA Extraction Yield %.

Coffee Extraction Yield (EY%)
19.72 %
Dissolved Coffee Solids Mass 3.55 g
Beverage-to-Dose Ratio 13.89 : 1
Distance from 20.0% SCA Center -0.28 % pts
Inputs
g
Dry ground coffee dose weight in grams.
g
Final brewed liquid coffee weight in the cup/carafe in grams.
% TDS
Refractometer Total Dissolved Solids reading (TDS %, ~1.35% filter, ~9.5% espresso).
Results & Graph
Coffee Extraction Yield (EY%)
19.72 %
Dissolved Coffee Solids Mass
3.55 g
Beverage-to-Dose Ratio
13.89 : 1
Distance from 20.0% SCA Center
-0.28 % pts

Coffee Extraction Yield (EY%)

Graph 1 • Dry Coffee Dose Grams Sensitivity Recalculates the domain equation across 50% to 150% of the primary input while holding other parameters constant.
0 % 21.3 % 42.6 % 50%: 39.44 % 39.4 50% 75%: 26.3 % 26.3 75% 100%: 19.72 % 19.7 100% 125%: 15.78 % 15.8 125% 150%: 13.15 % 13.2 150%
Graph 2 • Primary & Supporting Metric Comparison Compares the primary output alongside supporting domain benchmarks.
Coffee Extraction Yield (EY%) 19.72 % Dissolved Coffee Solids Mass 3.55 g Beverage-to-Dose Ratio 13.89 : 1 Distance from 20.0% SCA Center -0.28 % pts
Graph 3 • Exact Output Table & Units Displays each calculated output in its exact domain unit.
Coffee Extraction Yield (EY%)19.72 %Dissolved Coffee Solids Mass3.55 gBeverage-to-Dose Ratio13.89 : 1Distance from 20.0% SCA Center-0.28 % pts
Summary: 250g beverage at 1.42% TDS contains 3.55g dissolved coffee solids from an 18g dry dose = 19.72% Extraction Yield (SCA Ideal Sweet Spot (18%–22%)).
Summary: 250g beverage at 1.42% TDS contains 3.55g dissolved coffee solids from an 18g dry dose = 19.72% Extraction Yield (SCA Ideal Sweet Spot (18%–22%)).
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Interactive chart & math engine powered by CalculatorGraph

Formula & Mathematical Methodology: Coffee Extraction Yield Formula

DissolvedSolidsg = LiquidBeverageWeightg × (TDS% / 100)
ExtractionYield% = (DissolvedSolidsg / DryDoseg) × 100
DissolvedSolids_g = LiquidBeverageWeight_g × (TDS% / 100); ExtractionYield% = (DissolvedSolids_g / DryDose_g) × 100
  • dryCoffeeDoseGrams: Dry Coffee Dose Grams (g)
  • finalBeverageYieldGrams: Final Beverage Yield Grams (g)
  • measuredRefractometerTdsPct: Measured Refractometer Tds Pct (% TDS)

Rounding: Physical package counts round up where appropriate; continuous measurements round to 2 decimal places.

Worked Example: Practical Benchmark: Coffee Extraction Yield

Convert refractometer TDS % and beverage weight into SCA Extraction Yield %.

  1. Enter your project dimensions, machining speeds, or recipe weights.
  2. Compute the governing equation: DissolvedSolids_g = LiquidBeverageWeight_g × (TDS% / 100); ExtractionYield% = (DissolvedSolids_g / DryDose_g) × 100.
  3. Review the primary result, supporting dimensions, and 3 SVG visualizations.
Result: Computes Coffee Extraction Yield via DissolvedSolids_g = LiquidBeverageWeight_g × (TDS% / 100); ExtractionYield% = (DissolvedSolids_g / DryDose_g) × 100.

Frequently Asked Questions

How does the Coffee Extraction Yield (%) & Total Dissolved Solids (TDS) Calculator calculate results?

It evaluates DissolvedSolids_g = LiquidBeverageWeight_g × (TDS% / 100); ExtractionYield% = (DissolvedSolids_g / DryDose_g) × 100 directly in your browser and plots three custom SVG visualizations.

Can I compare different material dimensions or batch sizes side by side?

Yes. Click "Compare (0/3)" in the results toolbar to pin up to 3 scenarios side by side.

Can I print a clean shop or kitchen reference sheet?

Yes. Click the Print button in the results toolbar for a distraction-free worksheet.

Everyday Life · Kitchen & Culinary

Coffee Extraction Yield (%) & Total Dissolved Solids (TDS) Calculator: inputs, method, and how to read the result

Convert refractometer TDS % and beverage weight into SCA Extraction Yield %.

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 weight in grams.
  • Final Beverage Yield Grams: Final brewed liquid coffee weight in the cup/carafe in grams.
  • Measured Refractometer Tds Pct: Refractometer Total Dissolved Solids reading (TDS %, ~1.35% filter, ~9.5% espresso).

What the calculation includes

With the default values shown, Coffee Extraction Yield (EY%) is 19.72 %. The calculation follows 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 19.72 % to 17.75 %. This is a comparison inside the calculator's stated model, not a prediction.

Where to use caution

  • Uses standard North American & metric trade dimensions, Machinery’s Handbook formulas, and culinary weight ratios.
  • Verify local municipal building codes, tool manufacturer limits, and food-safety time/temperature tables before execution.

Scope: Trade, Shop & Culinary Science Reference Standard Check the assumptions and limitations against your situation before relying on the estimate.

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