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Calcimator

Coffee Roast Loss

Calculate weight loss during coffee roasting. Determine how much green coffee you need to achieve your target roasted weight at any roast level.

Inputs

Results

Roasted Weight

850 g

≈ 8 sticks of butter

Weight Lost150 g
Loss Percentage15%
How to Use This Calculator
  1. Enter the weight of green (unroasted) coffee in grams.
  2. Select the roast level: light (12%), medium (15%), dark (18%), or very dark (22%).
  3. The calculator shows roasted weight in grams, weight lost during roasting, and loss percentage.
  4. Use roasted weight to plan packaging quantities and pricing per 12 oz bag.

How the result changes with Green Coffee Weight (g)

Green Coffee Weight (g)Roasted Weight
5,0094,257.7 g
17,50714,881 g
32,50427,628.4 g
45,00138,250.9 g

What each input means

Green Coffee Weight (g)
Weight of unroasted green coffee beans in grams before roasting.
Roast Level
Darker roasts lose more moisture and organic material during roasting.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    Green Coffee Weight (g) = 1000, Roast Level = 2 = 2 input(s) provided
  2. Calculate Roasted Weight
    Roasted Weight
    850 = 850
  3. Calculate Weight Lost
    Weight Lost
    150 = 150
  4. Calculate Loss Percentage
    Loss Percentage
    15 = 15%

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