M&B WhiskyBottle Calculator
How many bottles might a cask yield? Put in what you know and this will give you an honest range rather than a single confident number.
What the numbers mean
A cask is not a container of bottles waiting to be poured out. What matters is how much pure alcohol is in it, how much of that is lost while it sleeps, and what strength it is finally bottled at.
Bulk litres multiplied by strength gives litres of pure alcohol — the figure the industry actually trades on. Divide that by the alcohol in one bottle and you have your yield. Bottle at a lower strength and you get more bottles, because water makes up the difference. Bottle at cask strength and you get fewer, but each one is the whisky as the cask made it.
The angel's share
Every year in a Scottish warehouse, a cask loses roughly two per cent of its volume to evaporation, and its strength falls a little too. Over a decade that is a meaningful difference, and it is why this tool gives a range: the real rate depends on the warehouse, the cask, and the weather.
If a cask falls below 40% ABV it can no longer be sold as Scotch whisky, however good it tastes. For very old casks this is a real risk, not a technicality.
This is an estimate for planning, not a valuation or a guarantee of yield. The only accurate figure comes from a regauge at the warehouse, which we can arrange.
Want the real figure for your cask?
A regauge gives the actual bulk litres and strength on the day. Tell us which cask and we will organise it.