Coffee Ratio Calculator
Calculate perfect coffee-to-water ratios for any brewing method. Support for espresso, pour-over, French press, cold brew, and more with strength control and unit conversion. Brew like a pro every time. For additional brewing data, see this coffee ratio guide.
Interactive Coffee Ratio Calculator
Calculate precise coffee-to-water ratios for your preferred brewing method. Adjust strength, convert between units, and get professional brewing recommendations.
Additional Resources
For more detailed coffee brewing data and ratio variations, follow this comprehensive coffee ratio guide from Coffee Bros.
Coffee Ratio Formulas & Brewing Guidelines
Golden Ratio Principle
The coffee-to-water ratio is the foundation of great brewing. Too little coffee = weak, under-extracted brew. Too much coffee = bitter, over-extracted brew. The “Golden Ratio” is typically 1:16-1:18 (coffee:water) for most methods.
Standard Ratio Formula
Brewing Method Ratios
| Method | Standard Ratio | Strength | Brew Time | Grind Size |
|---|---|---|---|---|
| Pour Over | 1:16.67 | Balanced | 2-4 min | Medium |
| Espresso | 1:2 | Very Strong | 25-30 sec | Fine |
| French Press | 1:15 | Full-bodied | 4 min | Coarse |
| Cold Brew | 1:8 | Concentrated | 12-24 hr | Coarse |
| AeroPress | 1:14 | Rich | 1-2 min | Medium-Fine |
Extraction Science
Optimal extraction extracts 18-22% of coffee solubles. Ratio controls concentration, while grind size, water temperature (195-205°F), and brew time control extraction quality. Use filtered water with 50-100 ppm minerals for best results.
Choose Method & Strength
Select your brewing method and preferred strength. Each method has an optimal ratio range. Strength slider adjusts from mild (0.8x) to strong (1.3x).
Enter Water Amount
Input your desired water volume in ml or cups. Calculator automatically determines precise coffee amount needed. Use filtered water for best taste.
Get Precision Measurements
Receive exact coffee weight in grams and tablespoons with step-by-step brewing instructions. Scale up/down while maintaining perfect ratio.
The “Golden Ratio” is 1:16-1:18 (1g coffee per 16-18ml water) for most brewing methods. This equates to 55-65g coffee per liter of water. Espresso uses 1:2 ratio, cold brew 1:8. This calculator uses method-specific optimal ratios.
1 level tablespoon ≈ 5-7g ground coffee. For precision brewing, use a gram scale. This calculator provides both weight (grams) and volume (tablespoons) measurements. Whole bean vs ground density varies, so weight is more accurate.
No. Each method requires different ratios: Espresso 1:2 (concentrated), Pour-over 1:16 (balanced), French Press 1:15 (full-bodied), Cold Brew 1:8 (concentrate). Use this calculator’s method presets for optimal results.
Weak coffee = too much water or under-extraction (coarse grind, short time). Bitter coffee = over-extraction (fine grind, too long, too hot). Use proper ratio, 195-205°F water, correct grind size, and brew time for your method.
Use a lower ratio number (e.g., 1:14 instead of 1:16). This means more coffee per same water amount. Our strength slider adjusts ratio from 0.8x (mild) to 1.3x (strong). Don’t just brew longer—this causes bitterness.
195-205°F (90-96°C) for optimal extraction. Boiling water (212°F) scorches coffee. Use a thermometer or let boiling water rest 30 seconds. Dark roasts prefer cooler temps (195°F), light roasts hotter (205°F).
Multiply both coffee and water by the same factor while maintaining the ratio. This calculator automatically scales—just enter your total desired water volume. For 4 cups (1000ml), use 4x the 1-cup ratio amount.
Grind size doesn’t change ratio but affects extraction. Use coarse for French Press, medium for drip, fine for espresso. If coffee tastes off, adjust grind before ratio. Finer grinds extract faster; coarser grinds need longer contact time.
No matching FAQs found. Try different keywords.