# Coffee Brew Ratio Calculator
Calculate the exact grams of coffee or milliliters of water for your ideal ratio (1:15, 1:16...). Includes in-cup result, pour guide, iced coffee mode and saved recipes.What is a 1:15 coffee ratio?
What is a 1:15 coffee ratio?: It means that for every gram of ground coffee you use 15 milliliters (or grams) of water. With 20g of coffee, you pour 300ml of water. It is the standard ratio recommended by the Specialty Coffee Association for filter methods like V60, Chemex or Aeropress.
Why is there less coffee in my cup than I poured?: Because ground coffee retains water during extraction. On average, each gram of coffee absorbs about 2ml of liquid. If you pour 300ml onto 20g of coffee, you will get approximately 260ml in the cup. This calculator shows you the real result.
What is bloom or pre-infusion?: It is the first water pour, equivalent to twice the weight of the coffee (2ml per gram). It is done to degas fresh coffee: the CO2 trapped during roasting escapes and allows the water to extract compounds uniformly. If there is no visible bloom, the coffee has been ground or roasted for some time.
How to make iced coffee without it being watery?: Use the flash chilling technique: prepare 60% of the total water as hot water at 90-96 degrees and put the remaining 40% as ice in the carafe. Pour the hot coffee directly over the ice. The rapid cooling seals in the aromas. This calculator automatically recalculates the amounts when you activate Iced Coffee mode.
# Why is there less coffee in my cup than I poured?
Because ground coffee retains water during extraction. On average, each gram of coffee absorbs about 2ml of liquid. If you pour 300ml onto 20g of coffee, you will get approximately 260ml in the cup. This calculator shows you the real result.- Choose the calculation mode: Select whether you are starting from the grams of coffee you have or the capacity of your cup (ml of water). The calculator adapts all results to the chosen mode.
- Enter the amount: Type the grams of coffee or the milliliters of water you are going to use. The calculator will automatically calculate the other value based on the selected ratio.
- Select the intensity: Choose between Strong (1:12-14), Balanced (1:15-16), Light (1:17-18) or enter your custom ratio. Each option corresponds to a different flavor profile.
# What is bloom or pre-infusion?
It is the first water pour, equivalent to twice the weight of the coffee (2ml per gram). It is done to degas fresh coffee: the CO2 trapped during roasting escapes and allows the water to extract compounds uniformly. If there is no visible bloom, the coffee has been ground or roasted for some time.| Coffee Brew Ratio Calculator | Ratio | Profile | Time |
|---|---|---|---|
| Espresso | 1:2-1:2.5 | Concentrated | 25-30 s |
| V60 / Pour-over | 1:15-1:16 | Clean and bright | 2:30-3:30 min |
| Aeropress | 1:12-1:15 | Versatile | 1:30-2:00 min |
| French Press | 1:12-1:14 | Full-bodied | 4:00-5:00 min |
| Cold Brew | 1:8-1:12 | Sweet and smooth | 12-24 h |
# How to make iced coffee without it being watery?
Use the flash chilling technique: prepare 60% of the total water as hot water at 90-96 degrees and put the remaining 40% as ice in the carafe. Pour the hot coffee directly over the ice. The rapid cooling seals in the aromas. This calculator automatically recalculates the amounts when you activate Iced Coffee mode.Select whether you are starting from the grams of coffee you have or the capacity of your cup (ml of water). The calculator adapts all results to the chosen mode. 1:15 Choose the calculation mode
60% Enter the amount
40% Select the intensity
# Activate Iced Coffee mode (optional)
If you are making iced coffee, activate the toggle. The calculator will automatically split the water between hot water (60%) and ice (40%) using the flash chilling technique.Follow the pour guide
Between 1:12 and 1:15 depending on use. If you drink coffee black, 1:15 is balanced. If you use it as a base for milk drinks or want high concentration, go down to 1:12 or 1:13. The Aeropress is the most versatile method precisely because it handles different ratios very well.
# What is the best ratio for an Aeropress?
Between 1:12 and 1:15 depending on use. If you drink coffee black, 1:15 is balanced. If you use it as a base for milk drinks or want high concentration, go down to 1:12 or 1:13. The Aeropress is the most versatile method precisely because it handles different ratios very well.- Activate Iced Coffee mode (optional): If you are making iced coffee, activate the toggle. The calculator will automatically split the water between hot water (60%) and ice (40%) using the flash chilling technique.
- Follow the pour guide: Use the phase guide (Bloom and Final Pour) to structure your brewing process. Each phase indicates exactly how much water to pour and when.
- Save the recipe: When you find your perfect ratio, save it with a descriptive name. Your recipes are stored in your browser for future sessions.