☕ Coffee Lab

Ratio calculator and brew timer for your pocket.

Ratio Calculator

Brew method

Water per 1g coffee

Water / beverage amount

Unit

31.3g

Coffee needed 1:16

Water amount 500g/ml

Tip: for espresso, enter your desired drink yield in grams. Example: 36g out at 1:2 needs 18g coffee.

Water Temperature Guide

Roast level

Brew style

96°C

Recommended temperature 205°F

Flavor tendency Higher clarity and brighter acidity

Lighter roasts usually prefer hotter water to help extract sweetness and acidity. Darker roasts often taste smoother with slightly cooler water to avoid bitterness and smoky over-extraction.

Brew Timer

Minutes

Seconds

04:00

Ready to brew