Coffee Roasting Weight Loss Calculator

☕ Coffee Roasting Weight Loss Calculator

Calculate roasted yield, weight lost, and moisture loss for any green bean batch

Quick Presets
Calculator
Roasted Weight
--
grams
Weight Lost
--
grams
Weight Loss %
--
of green bean weight
Yield Ratio
--
roasted per unit green
📊 Roast Level Quick Reference
12%
Light Roast Loss
15%
Medium Roast Loss
17%
Med-Dark Loss
20%
Dark Roast Loss
📋 Weight Loss % by Roast Level
Roast LevelWeight Loss %Roasted Yield %Flavor Notes
Light Roast11–13%87–89%Fruity, bright, high acidity
City Roast12–14%86–88%Balanced, mild sweetness
Medium Roast14–16%84–86%Balanced, caramel, chocolate
Medium-Dark16–18%82–84%Bittersweet, heavier body
Dark Roast18–22%78–82%Bold, smoky, low acidity
French Roast20–24%76–80%Very dark, oily, intense
Italian Roast22–26%74–78%Charred, espresso-style
Green to Roasted Weight Conversion (Medium Roast, 15% loss)
Green Bean WeightRoasted Weight (g)Roasted Weight (oz)Roasted Weight (lbs)
100g85g3.0 oz0.19 lbs
250g212g7.5 oz0.47 lbs
500g425g15.0 oz0.94 lbs
1 kg (1000g)850g30.0 oz1.87 lbs
1 lb (454g)386g13.6 oz0.85 lbs
2 lbs (907g)771g27.2 oz1.70 lbs
5 lbs (2268g)1928g68.0 oz4.25 lbs
📦 Batch Size Guide by Roast Level
Green BatchLight (12%)Medium (15%)Dark (20%)
100g green88g roasted85g roasted80g roasted
200g green176g roasted170g roasted160g roasted
500g green440g roasted425g roasted400g roasted
1 kg green880g roasted850g roasted800g roasted
2 kg green1760g roasted1700g roasted1600g roasted
5 kg green4400g roasted4250g roasted4000g roasted
💡 Tip: Always weigh your green beans before roasting and weigh again after the beans have fully cooled (about 10–15 minutes). Beans continue to release CO2 and residual moisture during cooling, so weighing while warm will give a slightly higher reading than the final cooled weight.
💡 Tip: Weight loss during roasting comes primarily from moisture evaporation (green beans have 10–12% moisture content) and CO2 degassing from the Maillard reaction. Darker roasts lose more weight because extended heat continues to drive off CO2 and volatile compounds, not because more water is removed — most water leaves during the first crack stage.

Coffee is made of roasted and ground coffee beans. It has dark color, bitter taste and a bit of acid. The drink stimulates people, mainly thanks to the caffeine in it.

Decaffeinated coffee exists for those who want to skip the caffeine. Various replacements for coffee also exist

All About Coffee

Drinking it in moderation, you can think coffee is healthy. In studyes, regular drinkers show lower risks of diabetes, stroke, heart disease, some cancers and dementia. Coffee has many substances that help to protect against diseases typical for women, for instance Alzheimer’s disease and heart problems.

The serving size of coffee is confusing. Industry standard is six ounces, but people usually take at least sixteen. Makers count cup as five ounces, so twelve-cup machine has reservoir for sixty ounces of water.

They use that to advertise more cups per brew. A gallon of coffee gives around sixteen eight-ounce cups, ideal for big groups. The Speciality Coffee Association of Europe advises sixty grams of coffee for liter water and two hundred milliliters each cup, so twelve grams of coffee powder.

Adding more coffee for strong drink seem logical, but it only intensifies the taste without additional caffeine. It just makes it more bitter.

Turkish coffee deserves attention if strong sounds good. Its focused style increases caffeine and taste. Lovers occasionally mix spoon of hazelnut or chocolate powder for new taste.

A doctored-up coffee benefits from spices like mint, cocoa and cinnamon.

Change of traditional stovetop moka pot to electrical version commonly gives better use and taste. Pourover is other favorite way to brew. Melitta or Chemex style works well, especially for one cup.

Good beans and good water matter more than almost everything for good taste.

Cold brew you easily prepare at home. Used grounds even go in bread. Rye with coffee grounds and oats in sourdough rolls are good idea.

Coffee can serve as main liquid in bread, but check its impact on yeast. If prices grow, folks find cheap beans for home brewing. Fresh roasted beans, as those of City+, have strong aromas and tastes, sometimes reminding blueberries.

Coffee Roasting Weight Loss Calculator

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