250 ml V60 pour-over
Formula: coffee = 250 / 16.
Amount: about 15.6 g coffee and 250 g/ml water.
Coffee to Water Ratio Calculator
Calculate the right coffee-to-water ratio for drip coffee, pour-over, French press, AeroPress, cold brew, moka pot, and espresso yield. Pick a method, tune strength, and get practical brew ratio amounts in grams, ml, fl oz, tablespoons, and scoops.
Inputs
Filter brew ratios use input water. Espresso methods use beverage yield.
Example: enter 16 for 1:16 coffee to water.
Grams, ml, and ounces: for brewing water, 1 g is approximately 1 ml. Fluid ounces measure water volume; coffee ounces measure weight.
Tablespoons and 10 g scoops are estimates because grind size, roast level, and how densely coffee is packed change the actual weight.
Results
Coffee:—
Water:—
Water fl oz:—
Tablespoons:—
10 g scoops:—
Ratio:—
Strength:—
Grind:—
Water temp:—
Brew time:—
Use a scale for best repeatability. Spoon and scoop estimates are only practical approximations.
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Quick Coffee Ratio Chart
| Method | Recommended ratio range | Balanced default | Grind size | Brew time | Water temperature | Notes |
|---|---|---|---|---|---|---|
| Drip coffee / filter brew | 1:14 to 1:18 | 1:16 | Medium | 4-6 min | 195-205 F / 90-96 C | Good default for automatic brewers. |
| Chemex | 1:15 to 1:17 | 1:16 | Medium-coarse | 4-5 min | 195-205 F / 90-96 C | Thicker filters often like a slightly coarser grind. |
| V60 / pour-over | 1:14.5 to 1:17 | 1:16 | Medium-fine | 2:30-3:30 | 195-205 F / 90-96 C | Adjust grind before making large ratio changes. |
| French press | 1:12 to 1:17 | 1:15 | Coarse | 4 min | 195-205 F / 90-96 C | Long steeping suits a coarse grind. |
| AeroPress | 1:10 to 1:16 | 1:13 | Medium-fine | 1-3 min | 175-205 F / 80-96 C | Shorter recipes often use stronger ratios. |
| Cold brew concentrate | 1:5 to 1:8 | 1:6 | Coarse | 12-18 hr | Cold or room temp | Dilute concentrate to taste before serving. |
| Cold brew ready-to-drink | 1:8 to 1:12 | 1:10 | Coarse | 12-18 hr | Cold or room temp | Designed to drink without heavy dilution. |
| Moka pot | 1:7 to 1:10 | 1:8 | Fine-medium | 3-5 min | Hot water in base | Use less coffee packing pressure than espresso. |
| Espresso yield | 1:2 to 1:3 | 1:2 | Fine | 25-35 sec | 195-205 F / 90-96 C | Measured as dose in to beverage yield out. |
| Ristretto yield | 1:1 to 1:1.5 | 1:1.25 | Fine | 20-30 sec | 195-205 F / 90-96 C | Shorter, more concentrated espresso yield. |
| Lungo yield | 1:3 to 1:4 | 1:3 | Fine | 35-45 sec | 195-205 F / 90-96 C | Longer espresso yield, often lighter-bodied. |
How Coffee to Water Ratios Shape Flavor
Coffee brewing is a balance of concentration and extraction. The coffee-to-water brew ratio defines the strength of the cup: a lower ratio like 1:12 uses more coffee and tastes stronger, while a higher ratio like 1:17 uses more water and tastes lighter. Filter brew methods usually sit near 1:15 to 1:17, cold brew concentrate is much stronger at about 1:5 to 1:8, and espresso is normally measured by dose-to-yield.
This calculator starts from the selected method and strength, then computes the missing amount. If you know your water amount, it determines how much coffee to grind. If you know your coffee dose, it tells you the water amount or espresso beverage yield. If you are brewing for cups and servings, it converts the target batch size into water first, then applies the ratio.
Ratio is only one part of the equation. Grind size, brew time, and temperature influence extraction. A coarse grind with a long steep (French press) can use a higher ratio without tasting weak, while a finer grind can extract more quickly and may taste bitter if the ratio is too low. Use the ratio as your baseline, then adjust to taste. If your cup tastes sour, try a slightly lower ratio or a finer grind. If it tastes bitter or heavy, increase the ratio or coarsen the grind.
Consistency is the biggest win. By measuring both coffee and water, you can repeat great cups and share recipes with accuracy. Once you find a ratio that suits your beans and method, keep it and adjust only one variable at a time. This calculator keeps those numbers fast and reliable so you can focus on flavor rather than math.
Ratio assumptions: the SCA Gold Cup brewer requirements use a testing baseline of about 55 g of coffee per liter of water, which is close to 1:18. The presets here use that benchmark plus common method-specific starting ranges; they are practical baselines, not fixed rules.
Formula
Ratio: R = water / coffee.
If water is known: coffee = water / R. If coffee is known: water = coffee × R.
Example Calculations
500 ml French press
Formula: coffee = 500 / 15.
Amount: about 33.3 g coffee and 500 g/ml water.
12-cup drip coffee
Formula: water = 12 x 147.9 ml; coffee = water / 16.
Amount: about 111 g coffee and 1,775 ml water for twelve 5 fl oz cups.
100 g cold brew concentrate
Formula: water = 100 x 6.
Amount: about 100 g coffee and 600 g/ml water for a 1:6 concentrate.
18 g espresso dose
Formula: yield = 18 x 2.
Amount: about 18 g coffee in and 36 g beverage yield out.
FAQs
What is the best coffee to water ratio?
A balanced filter coffee ratio is usually around 1:16 to 1:18. Stronger immersion recipes, cold brew concentrate, moka pot, and espresso yield use lower ratios.
How many grams of coffee per cup?
For a 250 ml cup at 1:16, use about 15.6 g of coffee. For a 5 fl oz coffee-machine cup, use about 9 g at the same ratio.
How much coffee for 12 cups?
For twelve 5 fl oz drip-machine cups at 1:16, use about 111 g of coffee and 1.77 liters of water. Choose the serving workflow to adjust cup size.
Is coffee ratio based on input water or final yield?
Filter, French press, AeroPress, moka pot, and cold brew ratios normally use input water. Espresso, ristretto, and lungo ratios normally use dose-to-beverage-yield.
What ratio should I use for cold brew concentrate?
Start around 1:5 to 1:8. The calculator's balanced cold brew concentrate setting uses 1:6, then you can dilute the concentrate when serving.
Why use grams instead of tablespoons?
Grams are more repeatable because tablespoons and scoops vary by grind size, roast density, and packing. The tablespoon result is a useful estimate, not a precision measure.
What is the SCA golden ratio?
The SCA Golden Cup benchmark is about 55 g coffee per liter of water, close to a 1:18 ratio. Many home recipes use slightly stronger ratios such as 1:15 to 1:17.
How it works
This tool applies the selected method, strength, and brew ratio, then solves for coffee, water, or espresso yield based on your input. All computation is client-side for privacy.
5 Fun Facts about Brew Ratios
Golden cup standard
Many coffee standards target 1.15–1.35% dissolved solids in the final cup.
Extraction
Espresso is stronger
Espresso uses much lower ratios, sometimes 1:2 by yield, for intense flavor.
Concentrated
Water quality matters
Mineral balance affects extraction and can change taste more than ratio alone.
Minerals
Grind size shifts ratios
A finer grind extracts more quickly, so it can taste stronger at the same ratio.
Grind
Bloom helps extraction
Pouring a small amount of water first releases CO₂ and improves even brewing.
Bloom