— RoastWorthy · Interactive coffee lab
Free Coffee Tools & Calculators, Quizzes
Turn the variables that shape coffee into clear next steps. Ten free calculators, finders, quizzes and games for ratio, grind, espresso, freshness, gear, batch size and cost.
Coffee tool bench
Recipe
1:16
18.8 g · 300 g
Grind
18–22
Encore · pour over
Espresso
1:2
18 in · 36 out
Freshness
Day 08
peak window
Batch
60 g
4 cups · 960 g
Quiz
8 / 10
coffee geek
Calculators · finders · quizzes
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— Choose your tool
Free Coffee Tools, Calculators & Quizzes
Every tool here follows the same standard as the rest of RoastWorthy: exact numbers, the reasoning behind them, and no fluff. Build a timed brew recipe, find the grind setting for your specific grinder, dial in an espresso shot, size a cold brew batch, check whether your beans are fresh, scale coffee for a crowd, test your coffee IQ, learn to read a roast by sight, or work out how much money brewing at home would save you. Each opens as its own page, works on mobile, and links to the in-depth guide behind it. Pick the one that matches what you're brewing today.