Free Online Coffee to Water Ratio Calculator
COFFEEONIX
PROFESSIONAL BREWING RATIO TOOL
How to Use the Coffee to Water Ratio Calculator
Choose Your Method: Select a preset ratio (like 1:16 for V60) or set your own via “Custom”.
Input Coffee or Water: Enter how much coffee you have, and the tool shows the water needed. Or enter your target water amount to see the required coffee dose.
Iced Coffee Mode: Toggle this to get a perfect Japanese-style iced coffee recipe: 60% hot water for brewing and 40% ice for instant chilling.
It would be great if you had kitchen scales at home – here I’ve clearly explained why they’re important for making good coffee!
Coffee Brewing Ratio Chart
| Brewing Method | Standard Ratio | Recommended For |
|---|---|---|
| Espresso | 1:2 | Rich, concentrated shots |
| Aeropress | 1:13 | Strong, full-bodied cup |
| French Press | 1:15 | Bold and textured coffee |
| Pour-over / V60 | 1:16 | Balanced and clean flavor |
| Chemex | 1:17 | Bright, tea-like clarity |
Why Ratio is the Secret to Great Coffee
Consistency is everything. Using a coffee to water ratio calculator allows you to replicate your best brews every day. By fixing the ratio, you can then focus on adjusting your grind size to dial in the perfect flavor profile for your specific beans.
Ready to brew? Check out our Top 10 Coffee Beans in the World or read our latest blog.
FAQ
For most pour-over methods, the Golden Ratio is 1:16 (1g of coffee to 16ml of water). This ensures a balanced extraction.
It uses the Japanese flash-brew method. The calculator splits the total water: 60% stays as hot water for brewing, and 40% is calculated as ice to be placed in the carafe.
Yes. Use the ‘Custom Ratio’ option to input any specific number, such as 1:8 for Cold Brew concentrate or 1:18 for a lighter body.