Our alcohol dilution calculator is used to calculate the proper ratios for mixing alcoholic beverages or adjusting their alcohol content.
For example…..
- A bartender might use it to dilute overproof rum (151 proof) to a standard 80 proof for cocktails.
- A distiller could employ it to adjust the final alcohol content of their product before bottling.
- A homebrewer might utilize it to calculate how much water to add to their high-alcohol beer to reach a desired ABV (Alcohol By Volume).
Alcohol Dilution Calculator
| Initial Volume | Initial ABV | Target ABV | Final Volume | Water Added |
|---|---|---|---|---|
| 750ml | 95% | 40% | 1781.25ml | 1031.25ml |
| 1L | 80% | 50% | 1.6L | 0.6L |
| 500ml | 70% | 35% | 1000ml | 500ml |
| 2L | 60% | 45% | 2.67L | 0.67L |
| 350ml | 99.9% | 75% | 466.67ml | 116.67ml |
| 300ml | 90% | 30% | 1.0L | 700ml |
| 1.5L | 75% | 20% | 2.25L | 0.75L |
| 200ml | 85% | 50% | 400ml | 200ml |
| 1L | 50% | 25% | 2L | 1L |
| 500ml | 40% | 10% | 2L | 1.5L |
| 600ml | 60% | 30% | 1.2L | 600ml |
| 2.5L | 95% | 60% | 3.125L | 0.625L |
| 1000ml | 70% | 55% | 1272.73ml | 272.73ml |
| 400ml | 99% | 80% | 480ml | 80ml |
Alcohol Dilution Formula
(V1 * C1) = (V2 * C2)Where:
- V1 = Initial volume
- C1 = Initial concentration (% ABV)
- V2 = Final volume
- C2 = Final concentration (% ABV)
Suppose you have 1 liter of 95% ABV grain alcohol and want to dilute it to 40% ABV. How much water should you add?
- Set up the equation: (1L * 95%) = (V2 * 40%)
- Solve for V2: V2 = (1 * 95) / 40 = 2.375L
- Subtract the initial volume to find the amount of water needed: 2.375L – 1L = 1.375L of water
This calculation shows you need to add 1.375 liters of water to your 1 liter of 95% ABV alcohol to reach a 40% ABV solution.
Does diluting alcohol with water make it weaker?
Yes, diluting alcohol with water does make it weaker in terms of alcohol concentration. However, it’s important to understand the nuances:
Total alcohol content: The absolute amount of ethanol remains the same, but it’s distributed in a larger volume.
Perception of strength: Dilution can actually enhance flavor perception by reducing the overwhelming ethanol burn.
Safety: Dilution makes high-proof spirits safer to consume by reducing the risk of alcohol poisoning.
Consider 100ml of 80% ABV vodka. If you add 100ml of water:
- Initial alcohol content: 80ml ethanol in 100ml solution
- After dilution: 80ml ethanol in 200ml solution
- New ABV: (80ml / 200ml) 100 = *40% ABV
The vodka is now “weaker” at 40% ABV, but the total amount of ethanol hasn’t changed.
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