Tool
How much water do I need to add?
Water to bring a strength down, and a reminder that it brings acid, tannin, sugar and aroma down in exactly the same proportion.
Dilution
Water to add
6.67 L
Final volume: 26.67 L
How this is worked out
- Conservation of alcohol: V₁ × ABV₁ = V₂ × ABV₂
- Final volume: (20.00 × 8.0) ÷ 6.0 = 26.67 L
- Water to add: 26.67 − 20.00 = 6.67 L
What this assumes (2)
- Dilution reduces acid, tannin, sugar and aroma in exactly the same proportion as alcohol. The result is not a weaker version of the same cider; it is a thinner one.
- Adding water is restricted or prohibited under several protected designations and by some national definitions. Check what applies before doing it commercially.
Related tools
Where this reading comes from
Guides that reach this calculator, and what the number decides once you have it.