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Try an Example
Pick a scenario to see how the calculator works, then adjust the values
Morning Drip Coffee
Two standard cups of medium-strength drip coffee.
Key values: 2 cups (6 oz each) · Medium strength · Arabica beans
Espresso Double Shot
A classic double espresso with standard extraction.
Key values: 18g dose · Normale profile · 25-30 sec pull
Cold Brew Concentrate
A batch of cold brew concentrate for the week.
Key values: 500 mL water · Strong ratio 1:4 · 18-24 hr steep
V60 Pour-Over
A single precise pour-over with bloom calculation.
Key values: 1 cup · Medium-strong · Bloom water shown
This calculator is also known as Coffee Brewing Calculator.
Read the complete guideThe Five Variables of Coffee Brewing
Every cup of coffee is determined by five controllable variables: (1) Dose (how much coffee), (2) Ratio (coffee to water), (3) Grind size (surface area for extraction), (4) Water temperature (extraction speed), and (5) Brew time (contact duration). Changing any one of these affects the final flavor.
Examples
Dialing In a V60 Pour-Over
300 mL of water, medium strength, V60 method
20 g coffee, medium-fine grind, 195-205F water, 2:30-3:30 brew time, 50 g bloom water.
Key takeaway: Pour-over gives you the most control over all five variables.
Brew Better Coffee Today
Small adjustments to any variable can transform your cup.
- Start with the recommended ratio and grind, then adjust one variable at a time
- If coffee tastes bitter, try a coarser grind or lower temperature
- If coffee tastes sour, try a finer grind or higher temperature
Frequently Asked Questions about Coffee Brewing Calculator
What grind size should I use?
Grind size depends on your brew method. Espresso needs extra fine (like powdered sugar), drip needs medium (like sand), and French press needs coarse (like sea salt). The calculator recommends the correct grind for your selected method.
Does water temperature really matter?
Yes. Water between 195-205F (90-96C) extracts the best flavors. Too hot and coffee tastes bitter; too cool and it tastes sour and under-extracted. At high altitudes, water boils at a lower temperature, which the calculator accounts for.
Specialized Calculators
Choose from 6 specialized versions of this calculator, each optimized for specific use cases and calculation methods.
Purpose
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