Coffee Ratio Calculator
Free coffee ratio calculator. Enter the brew water and your desired ratio to get the exact ground coffee weight in grams for pour-over, drip and French press.
Common ratios: 1:15 strong, 1:16 balanced, 1:17 mild.
About the Coffee Ratio Calculator
Our free coffee ratio calculator gives the exact weight of ground coffee for any brew size. Enter the amount of water you are brewing and your preferred ratio of water to coffee, and the tool returns the coffee weight in grams plus the actual brewed yield after the grounds absorb some water. Ratios around 1:15 are strong, 1:16 balanced and 1:17 mild. Works for pour-over, drip, AeroPress and French press. Everything runs in your browser — instant, private, no signup.
Features
- Coffee weight from water and ratio
- Brewed yield after water absorption
- Ratios from strong 1:15 to mild 1:17
- Works for pour-over, drip and French press
- Results in precise grams
- 100% client-side and private — instant results, no signup
How to use this tool
The Coffee Ratio Calculator works right in your browser — no signup, no installation. Follow these steps:
- Enter the amount of brew water (g).
- Set the water-to-coffee ratio (e.g. 1:16).
- Read off the ground coffee weight.
- Brew and check the resulting yield.
Frequently asked questions
How do you calculate coffee from a ratio?
Divide the water weight by the ratio. For 240 g of water at a 1:16 ratio, you need 240 ÷ 16 = 15 g of ground coffee. The calculator does this and also estimates the brewed yield after the grounds absorb some water.
What is the best coffee-to-water ratio?
Around 1:15 to 1:17 suits most palates. 1:15 is strong and intense, 1:16 is balanced, and 1:17 is milder. The widely used industry starting point is 1:18 for large batches, scaled stronger to taste.
Why is the brewed yield less than the water?
Wet coffee grounds hold on to roughly twice their weight in water. The calculator subtracts about twice the coffee weight from the water to estimate what actually lands in your cup.
Does this work for French press and AeroPress?
Yes. The ratio math is the same for any method. French press often runs a little stronger (around 1:15), while AeroPress recipes vary widely — start at 1:16 and adjust.
Is this coffee ratio calculator free?
Yes, completely free with no signup. All maths runs in your browser — nothing is uploaded or tracked.
Using the results
Use the Coffee Ratio Calculator to plan quantities or timings from the inputs above. Results depend on the stated assumptions and the ingredients, equipment and method you use.