Coffee calculators & tools

Free, no sign-up. The quick calculations that make home coffee cheaper and more consistent.

Coffee-to-water ratio

Grams of coffee and water for any brew method — pour-over, French press, espresso, and more.

Coffee, water, and steep time for concentrate or ready-to-drink cold brew — sized to your jar.

The right grind for every brew method, with a texture you can feel and how to dial it in.

Your real cost per cup and per year, and how fast a grinder pays for itself.

How to split your money across the machine, grinder, and accessories — and where beginners overspend.

Estimate the caffeine in your coffee by method and serving, against the daily guideline.