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Use the coffee to water ratio calculator to get exact grams of coffee and water for any brew method, starting from a 1:16 default.

The cold brew coffee calculator gives grams of coffee for concentrate or ready to drink batches, plus grind, steep time and dilution.

The french press coffee calculator sets your dose at a 1:14 ratio, then this page covers press sizes, grind, steep time and strength.

How much coffee for 12 cups: about 110 g, or 22 level tablespoons, or 11 scoops for a standard 12-cup drip carafe.

How much coffee per cup: about 9 g for a 5 oz coffee maker cup, 15 g for an 8 oz mug, with scoop counts.

The pour over coffee calculator sets your dose from a 1:16 ratio, then this page covers grind, bloom, pour stages and total brew time.

Bitter espresso usually means over-extraction: the grind is too fine, the shot runs too long, or the yield is too high. Fix the timing first.

Espresso channeling is water punching a fast path through the puck. It tastes sour and harsh at once, and puck prep fixes it, not grind.

Over extracted coffee tastes harsh and drying, under extracted tastes sharp and thin. Grind, heat, time and ratio move the cup either way.

Sour coffee is under-extracted: grind too coarse, water too cool, or brew too short. Push extraction further, one small step at a time.

Bitter coffee is almost always over-extracted: grind too fine, water too hot, or brewed too long. Change one variable at a time.