Scientific caffeine estimation
CaffiLab
Scientific caffeine estimation for your exact brew.
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Recommended daily caffeine intake
Adults (19+)≤ 400 mg
Pregnant / nursing≤ 200 mg
Teens (13–18)≤ 100 mg
Children (4–12)≤ 2.5 mg/kg
Sources: FDA (2018), EFSA (2015), Health Canada. Children under 4 should avoid caffeine.
Model
C = dose x bean caffeine x recovery
Caffeine fraction is calibrated from Arabica/Robusta literature. Brew water sets extraction ratio; dilution only changes final cup concentration.
Estimated caffeine
198mg
Confidence
High
Range: 178-218 mg. Uncertainty: +/-10%.
Method
Pour Over (V60)
Strength
62 mg/100ml
Brew ratio
1:16
Basic inputs
Explanation
Pour Over (V60) starts from a 82% caffeine recovery baseline. Unknown bean type: conservative Arabica baseline sets the bean caffeine fraction. Brew water sets a 1:16.0 coffee-to-water ratio, while dilution only changes final cup strength, not the caffeine mass. The selected extraction variables place this serving near 198 mg with +/-10% uncertainty.
This is an estimate based on coffee extraction science. Actual caffeine may vary by cultivar, roast, water chemistry, brewing geometry, and measurement method.