CoffeeForHuman
Your friendly coffee robot helps humans calculate brew amounts, dial ratio, and nail bloom timing for Chemex, French press, and moka pot.
Tap your method, move the ratio slider, and I will guide your next delicious cup.
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500 ml water
30.0 g coffee
1:16.7 ratio
60 ml bloom water (about 2x coffee mass)
00:45
Use bloom for initial degassing before main pours.
Chemex: clean and bright with medium-coarse grind.
Pour in pulses, keep bed flat, and finish near 4:30.
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Use this coffee calculator when you need exact water and coffee amounts for daily brews. For most pour-over coffee, start between a 1:16 and 1:17 ratio, then adjust strength by small steps. If your cup tastes weak, move toward 1:15. If it tastes too intense, move toward 1:18. Beanie Bot says tiny changes make big flavor moves.
Typical brew times vary by method. Chemex often lands around 4:30, French press near 4:00 immersion, and moka pot around 3:00 on controlled heat. Grind size, water temperature, and pour technique will shift your final extraction.
For bloom water, use around twice your coffee mass. Example: 30 grams coffee benefits from about 60 ml bloom water for 30 to 45 seconds before your main pours.
Step-by-step guides: Chemex ratio and brew time, French press ratio and brew time, and moka pot ratio and brew time.
12 oz is about 355 ml. At 1:16.7, use about 21.3 grams of coffee. Full guide: how much coffee for 12 oz.
At 1:16.7, use about 60 grams of coffee for 1,000 ml water. Full guide: how much coffee for 1 liter.
A stronger brew commonly sits near 1:14 to 1:15, depending on method and taste preference.
A practical range is 92 to 96 degrees C for most filter and immersion brews.