Coffee Calculators
Green Coffee Density Calculator
https://www.coffeesizing.com/calculators/green-coffee-density/
Estimate only — not a cupping score, a water lab or a roast profile. Confirm on a test brew.
Green Coffee Density Calculator
Dense, high-grown greens take heat differently than puffy, lower-density lots. Bulk density is mass over the volume they occupy in a beaker — including air between beans. Use it to compare lots and to sanity-check a charge, not to brag about ‘84 kg/hL’ unless you used the same method.
Inputs
Results
- Bulk density
- 0.625g/ml
- Bulk density
- 625.0g/L
Recommended gear
0.1 g coffee scale
Density is mass over volume. A 1 g error on a 100 g sample is already a story. Weigh, then read the beaker.
Typical range: $20–$80
Roasting thermometer
Denser lots often need more energy to first crack. Density tells you to watch the probe, not to skip it.
Typical range: $20–$80
Airtight coffee canister
Keep the sample lot sealed so moisture — and density — do not drift while you wait to roast.
Typical range: $20–$50
Calculation method
Bulk density in g/ml is mass divided by millilitres occupied. Multiply by 1000 for g/L (and divide by 10 for a rough kg/hL if you must talk trade units). 100 g in 160 ml is 0.625 g/ml or 625 g/L. Tapping the beaker raises density; pick a protocol.
Exact formula
densityGPerMl = massG / volumeMl. densityGPerL = densityGPerMl × 1000. Limits: Packing, moisture and true kernel density omitted; this is bulk density, not helium pycnometry.
Quakers and defects
A handful of low-density defects will not move 100 g much. Density is a lot average. Sort with your eyes too.
Frequently asked questions
Water displacement?
Water fills gaps and approximates a higher ‘true’ density, and wets the sample. This page assumes a dry pour volume unless you measured displacement on purpose.
Why does density matter for roasting?
Denser beans often crack later or need more heat. It is a hint for charge temperature and RoR, not a profile by itself.
Screen size?
Larger screens pack differently. Compare density within a screen, or you are measuring packing, not origin.
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