Cheese Making Calculator. Enter your milk volume, cheese type, fat content, and target moisture to calculate exactly how much rennet, starter culture, and salt you need for your batch. The Cheese Making Calculator also estimates your cheese yield in both weight and percentage, so you know how much finished cheese to expect from your milk before you start. Also try the Pickling Brine Calculator.
Rennet quantity depends on your milk volume and the rennet's strength (measured in IMCU per mL). A standard dose is roughly 2–3 IMCU per litre of milk. This calculator uses your milk volume and selected rennet strength to give you the precise mL needed. Always dilute liquid rennet in cool, non-chlorinated water before adding to the milk. See also our find Recommended Pressure with Pressure Canner PSI Calculator.
Cheese yield is the weight of finished cheese produced per unit of milk. It depends on the fat and protein content of your milk, the target moisture of your cheese style, and fat losses into the whey. A typical semi-hard cheese like cheddar yields around 10–11% — meaning roughly 1 kg of cheese from every 9–10 litres of milk.
The standard rate for freeze-dried direct-set starter cultures is approximately 0.1–0.2 g per litre of milk, depending on the brand and culture type. Mesophilic cultures are used for most soft and semi-hard cheeses, while thermophilic cultures suit mozzarella and hard Italian styles. Always check your culture packet for the manufacturer's recommended dosage.
Higher fat content in milk directly increases cheese yield, because fat is retained in the curd. A milk with 4% fat will produce noticeably more cheese than a 2% skimmed milk from the same volume. Fat losses into the whey reduce yield, so minimising whey fat loss through proper curd handling improves efficiency.
Cheese type determines the target moisture level, which has a major impact on yield. Fresh cheeses like quark or ricotta retain much more water and therefore yield more weight per litre. Hard cheeses like parmesan are pressed and aged to remove most moisture, resulting in a lower but more concentrated yield.
For most cheese types, roughly 80–90% of the milk volume ends up as whey. If you process 10 litres of milk to make semi-hard cheese with ~38% moisture, you'll recover around 1–1.1 kg of cheese and approximately 8–9 litres of whey. Whey can be used in cooking, fed to animals, or processed into ricotta.
Salt is typically added at 1.5–2.5% of the finished cheese weight. Salt can be applied as dry salt rubbed on the surface, mixed directly into the curd, or applied via a brine bath. The right amount affects flavour, moisture control, and preservation. This calculator estimates salt based on your projected cheese yield and your chosen salt percentage.
Yes. Simply adjust the fat content and protein content fields to match your milk source. Goat milk typically has 3.5–4.5% fat and 2.9–3.5% protein. Sheep milk is notably richer at 6–8% fat and 4.5–6% protein, which produces a significantly higher cheese yield compared to cow milk.