How to Use the Meat Dry-Aging Calculator
Dry-aging exposes beef to controlled temperature and humidity for an extended period, letting moisture slowly evaporate while natural enzymes tenderize the meat and concentrate its flavor. This calculator takes your starting weight and aging period in days, then estimates the moisture loss percentage and final weight based on a typical dry-aging loss curve.
Loss happens faster early on as surface moisture evaporates quickly, then gradually slows down. A common pattern is around 10% loss by day 7, roughly 18-21% by day 21-28, and 28% or more for long 45-day-plus aging. Longer aging concentrates flavor more intensely, but that comes paired with a larger weight loss, so it's worth weighing the tradeoff.
This estimate only accounts for moisture lost during aging itself. After aging finishes, trimming away the hardened, dried exterior crust (the pellicle) removes an additional 5-15% of the weight before the meat is ready to cook. Because of that extra trim loss, it's smart to start with more weight than you actually plan to end up eating.
Frequently Asked Questions
No, this calculator's loss percentage only reflects moisture lost during aging. After aging finishes, trimming away the hardened, dried exterior (the pellicle) removes an additional 5-15% of the weight.
Not necessarily. 21-28 days offers a good balance of tenderness and mild funky flavor, while 45+ days develops a much stronger nutty, cheesy flavor along with a higher weight loss — pick a duration based on the flavor intensity you want.