Free coffee calculators
Quick, accurate numbers for brewing at home. No account, no ads in your way.
Every calculator runs in your browser and explains the assumptions behind its numbers: the ratio calculator accounts for the water your grounds soak up, the caffeine calculator shows its sources and a range instead of false precision, and the savings calculator counts milk and gear, not just beans.
Coffee to Water Ratio Calculator
Exact grams of coffee and water for French press, pour over, drip and cold brew.
Open calculator →Caffeine Calculator
Add up today’s coffee, tea and energy drinks, or estimate the caffeine in your own brew.
Open calculator →Home vs. Café Coffee Savings Calculator
See what your café habit costs per year and how fast home gear pays for itself.
Open calculator →