Free Tools
Interactive calculators built for home coffee brewing and espresso how-tos. No sign-up, no downloads — enter your numbers and get an answer you can act on.
Coffee-to-Water Ratio Calculator
Get the right coffee dose or water amount for pour-over, drip, French press, AeroPress, cold brew, or espresso.
Coffee Caffeine Estimator
Add up your daily caffeine across drip, espresso, instant, and cold brew, compared to the FDA 400 mg guideline.
Cold Brew Concentrate Calculator
Work out how much coffee to steep for a cold brew batch, then dial in your dilution for the strength you want.