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Coffee to Water Ratio Calculator

Find the perfect coffee-to-water ratio for your brewing method. Free, no signup required.

Water Needed 340 g

Coffee Brewing Tips

What is the best coffee-to-water ratio?
The most common starting point is 1:17 (e.g., 20g coffee to 340g water) for pour-over methods.
What is the coffee-to-water ratio for French press?
A good starting point for French press is 1:15. For 30g of coffee, use about 450g of water.
What is the coffee ratio for pour over?
Pour over and V60 brew well around 1:15 to 1:17. Start with 1:17 and adjust stronger or lighter to taste.
What is the AeroPress coffee ratio?
AeroPress typically uses a ratio around 1:16. For a stronger cup, go closer to 1:14; for lighter, try 1:17.
What is the cold brew ratio?
Cold brew uses a much higher coffee-to-water ratio, usually between 1:8 and 1:10, because it is steeped for a long time.
What is the Moka Pot ratio?
Moka Pot coffee is much stronger than drip coffee. A common starting ratio is 1:6 to 1:8, depending on your taste and pot size.
What is the espresso ratio?
Espresso is typically brewed at a 1:2 ratio. For example, 18g of coffee produces about 36g of espresso shot.
How do you calculate coffee to water ratio?
Multiply the weight of your coffee by the second number in the ratio. For example, with a 1:17 ratio and 20g coffee, multiply 20 by 17 to get 340g of water.
How much water do I need for 20g of coffee?
At 1:17, 20g coffee needs 340g water. At 1:15, it needs 300g water.
Does grind size change the ratio?
Grind size affects extraction more than ratio. Finer grinds extract faster, so you may lower the ratio slightly; coarser grinds may need a slightly higher ratio.
Can I use this calculator without a scale?
A scale is recommended for accuracy. If using volume measures, 1g water is approximately 1ml, and 1g coffee is about 2 tablespoons.
Is this tool free?
Yes. This coffee-to-water ratio calculator is completely free and requires no signup. All calculations happen locally in your browser. No data is uploaded to any server.