Coffee, by the numbers.
We turn good coffee into a repeatable recipe.
Why BrewMetrics exists
Most coffee advice is vague — “add a scoop or two,” “brew until it tastes right.” The result is a cup that’s great one morning and sour the next, with no idea why.
BrewMetrics was built on a simple belief: the fastest way to better coffee is to weigh it. Ratios, caffeine, extraction, and cost are all just numbers — and once you control the numbers, you can make the same great cup every day and explain exactly how.
So we build free calculators for the numbers that matter, and pair them with clear, tested guides. No fluff, no gatekeeping — just the math behind a better brew.
How we get our facts
Our brewing guidance follows the Specialty Coffee Association’s standards and is tested at the brew bar. Caffeine and health figures come from primary sources — the FDA, USDA FoodData Central, and peer-reviewed research — and every article lists its sources so you can check them.
Who writes this
Certified baristas & coffee scientists
BrewMetrics is written by SCA-certified baristas, a licensed Q Grader, and a food scientist. Meet the team on our team page.
Disclaimer: Our content is for educational purposes only and is not medical advice. If you have health concerns about caffeine, consult a qualified physician.