Tools
Coffee calculators
Pour-over ratios and a freshness curve check — same logic we use in the day9 app, free in the browser.
Pour-over ratio
Scale coffee and water by weight for 1:14 through 1:18, with a practical pour breakdown. Same tool as in our ratio guide .
Pour-over ratio calculator
Grams
Grams
Grams
Pour breakdown
Bloom (30-45s)
44g
After first pour
110g
After second pour
242g
After final pour
352g
Estimated brewed volume
308g · 10.4 fl oz
Estimated brew time
3-4 minutes
Freshness curve
Roast date, how you store it, process, and whether it's whole bean or ground — see approx. % of peak and what to do next. For the day-by-day story, read the science of coffee freshness .
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Your coffee right now
PEAK8
days since roast
96%
of peak
day 0peak ~ day 7day 35
Brew today. This is the window.
Don't guess next time.
We'll watch this bag and ping you the day it hits peak. One notification, no spam, perfect timing.
Free · no credit card · magic link sign-in
