How the mead calculator works
Mead is honey fermented with water and yeast, so the honey sets the potential alcohol. Honey is mostly fermentable sugar, and roughly 21 grams per liter raises the finished alcohol by about one percent. This tool multiplies that by your target and batch size to estimate the honey, then works out how much water to top up with and a rough starting gravity to check with a hydrometer.
Honey and potential alcohol
A standard mead lands around 10 to 14 percent alcohol, while a strong sack mead pushes higher. Because honey carries water and trace solids, you need a little more than pure sugar for the same alcohol. The sweet style option adds extra honey so some sweetness remains after the yeast finishes, which suits dessert style meads.
Topping up with water
Honey takes up real volume, so you do not simply add it to a full batch of water. Mix the honey with warm water to dissolve, then top up to your target volume. The calculator estimates the water to add after accounting for the space the honey occupies, so your finished batch lands near the size you wanted.
Yeast and sweetness
Yeast choice shapes the result. Wine and mead yeasts tolerate higher alcohol and can ferment dry, while lower tolerance yeasts may leave sweetness behind. If you want a sweet mead, either use a lower tolerance yeast or add honey beyond what the yeast can ferment. Nutrients help honey ferments, which are otherwise low in what yeast needs to thrive.
Frequently asked questions
How much honey for 5 liters of mead? About 1.3 kg for a roughly 12 percent dry mead, more for a sweet or stronger one.
How much honey per gallon? Roughly 1.1 to 1.4 kg, about 2.5 to 3 pounds, per US gallon for a standard mead.
Why top up with water after the honey? Honey takes up volume, so adding water last keeps the batch at the size and strength you planned.
Related calculators: Fermentation Sugar, Hydrometer Correction, Kombucha.