Milk Kefir Calculator
For milk-kefir grains and dairy milk. Adjust the temperature, time or amount to estimate a starting ratio for your batch.
New to milk kefir?
Kefir grains are small, soft pieces of living culture. They turn milk into kefir. They are not cereal grains.
This calculator is for milk kefir grains and dairy milk. Do not use water kefir grains.
Have these ready: pasteurized milk, a clean jar, spoon, strainer, clean cloth or coffee filter, and a rubber band.
For your first batch, keep the complete milk-kefir method beside you. The estimate is a starting point; the changes in the jar still matter.
1Choose your settings
Choose “Grains I need” when you know the milk amount. Choose “Milk I need” when you know the grain amount.
Active These grains are used often and make kefir normally.
Sleepy These grains are waking up after shipping, drying, freezing, or a long rest in the fridge. They may work more slowly, so the calculator uses 20% more grains.