Alcohol dilution calculator: whiskey proof & dilution calculator

Alcohol dilution calculator: whiskey proof & dilution calculator

Frequently asked questions about alcohol dilution & whiskey dilution

What is the formula for diluting alcohol? 

The right way to measure and ensure you're diluting alcohol correctly involves a known formula: C1V1=C2V2, where C1 and C2 are the initial and final alcohol concentrations, and V1 and V2 are the initial and final volumes. This equation ensures you dilute your spirit to the desired concentration accurately.

By applying this formula, you can be sure that the alcohol is diluted in the right way, making it a reliable method to measure and adjust alcohol strength. Whether you're working with commercial spirits or home concoctions, understanding this equation is fundamental.

We also suggest consulting with an expert in spirit production to seek the most reliable advice for your dilution process. 

How to make 40% alcohol from 70% alcohol

You'll need to add 0.75 liters of water to 1 liter of 70% alcohol to create a solution that is 40% alcohol.

Using the formula C1V1 = C2V2, you can set up the equation as follows: 0.70×1=0.40xV2, solving for V2 gives you the total volume of the diluted solution. To find out how much water needs to be added, subtract the original volume of alcohol from the total volume calculated.

Calculation:

0.70×1 = 0.40×V2

V2 = 0.70/0.40​

V2 = 1.75 

1.75 - 1 = 0.75

How do you dilute 90% alcohol to 40%

To get from 90% to 40% alcohol by volume, you would need to add 1.25 liters of water to 1 liter of 90% alcohol, making the total volume 2.25 liters.

Using the formula C1V1=C2V2, where C1 is the initial alcohol concentration (90%), V1 is the initial volume of alcohol (let's assume 1 liter), C2 is the desired concentration (40%), and V2 is the final volume after dilution.

Calculation:

0.90×1=0.40×V2

V2 = 0.90/0.40​

V2 = 2.25

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