Coffee Ratio Calculator
A free, browser-based calculator. Runs entirely in your browser — no sign up, nothing stored.
100% FreeRuns in your browserBasic
Enter Values
Enter your values and press Calculate to see results.
How to use this calculator
- Enter the water amount and your ratio (1 : N).
- Read the coffee to use.
How it works
Coffee = water ÷ ratio. A 1:16 ratio with 500 mL water needs about 31 g of coffee.
Worked example
500 mL at 1:16. ≈ 31 g of coffee.
Common mistakes
- Measuring coffee by volume (scoops) instead of weight.
- Forgetting lower ratios (1:14) are stronger, higher (1:18) weaker.
Frequently asked questions
What's the golden ratio?
Roughly 1:15 to 1:18 (coffee : water). Adjust to taste and brew method.
Related tools
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.