Charge builder
How much spirit and water to hit a target charge volume and ABV — contraction-aware, with the ethanol cost of the charge.
Target charge
Liquid volume above is AFTER displacement — this field only checks your pot has room: liquid + displacement must fit the pot.
Spirit source
Neutral spirit is typically ~96% ABV — use the ABV on your supplier's CoA for the batch. Cost is per litre of spirit as delivered (leave 0 to skip costing).