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Brew tools
Coffee brewing calculator
No more guessing. Pick your method, how many cups and how strong you like it — we’ll give you the coffee and water to weigh out for a cup with backbone.
Brew method
Full immersion, coarse grind.
How many cups? (250ml each)
2
Strength
Weigh this out
Coffee 34g
Water 500ml
Ratio 1 : 16
Use water just off the boil (~94°C). Bloom grounds for 30 seconds, then pour slow. Weigh it once and you’ll taste the difference.
Shop the roastCoffee lives or dies on the ratio of grounds to water. Too little and it’s thin and sour; too much and it’s muddy. This calculator does the maths so you can weigh, brew and repeat the cup you love. Next, dial in your grind with the grinder dosing calculator, or read our guide to the golden ratio.