Food & Fermentation · Charcuterie
Dry-cure meat weight loss calculator
Whole-muscle dry curing, think coppa, bresaola, or a homemade prosciutto, is done when the meat has lost enough water weight to be safe and shelf-stable, not when a fixed number of days has passed. Two identical cuts started the same week can finish days or weeks apart depending on chamber humidity, airflow, and fat content. This calculator tracks the one number that actually matters: percentage of weight lost since you started.
This is a quick, free way to answer one question: how far along is this cure, and roughly how much longer? If you want full tracking across multiple cuts, charts over time, and recipe storage, an app like DeliApp does more than this page ever will and is worth using for that. This tool skips the account and the app download and just does the math on the spot.
Most whole-muscle cures aim for 30-35%. Fattier cuts can run closer to 40%.
Weight lost so far
12.5%
4.0 oz (0.25 lb) lost
- This estimate assumes weight loss keeps happening at roughly the same daily rate it has so far. Loss slows down as the surface dries and forms a case, so treat the days-remaining number as a rough guide, not a countdown clock. Weigh the meat again in a few days and recheck.
- A cut isn't done just because the scale hits your target percentage. Check for an even texture with no soft or mushy spots at the core before eating.
What to actually buy
Etekcity 0.1g Digital Kitchen Scale
This whole calculator runs on the gap between two weigh-ins, so precision matters more here than in most kitchen tasks. A scale that only reads in whole grams or ounces can hide several days of actual moisture loss in its rounding error, while 0.1g resolution catches small, real changes between weigh-ins.
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How this is calculated
Weight-loss percentage is just (green weight minus current weight) divided by green weight. That number is the whole game in whole-muscle curing, because water loss, not time, is what actually makes the meat safe and shelf-stable. Two coppas started the same week in different chambers can finish days apart depending on humidity, airflow, and fat cap, so weight is the real clock, not the calendar.
For the target, most whole-muscle dry cures are done somewhere between 30% and 35% weight loss, with fattier cuts sometimes pushed toward 40% since fat holds onto more of its structure than lean muscle does. UMAi Dry, which makes curing bags used widely in home charcuterie, states the rule directly: cure until the meat has lost 35 to 40% of its original weight. This calculator lets you set your own target inside that range rather than hard-coding one number, since cut, fat content, and recipe all shift it.
The days-remaining estimate, if you turn it on, just takes the percentage you've lost so far and divides it by the number of days since you started, then projects that daily rate forward to your target. It's a straight-line estimate, and drying slows down over time as a case forms on the surface, so it tends to run optimistic in the later weeks. Re-weigh every few days and let the number correct itself.
Frequently asked questions
What's my "green weight" if I forgot to weigh the meat at the start?
You need the actual pre-cure weight for this calculator to work, there's no reliable way to back into it later. If you genuinely don't have it, weigh the meat now and use that as a rough baseline going forward, understanding your weight-loss percentage from that point on will run behind the real total.
What if my cure hits the target percentage way faster than expected?
Check your scale and your green weight entry first, a fast finish is more often a data error than genuinely fast drying. If the numbers check out, a thinner cut, low chamber humidity, or strong airflow can all genuinely speed up moisture loss, just confirm the interior is firm all the way through by feel before calling it done, not just the percentage.
Why does the days-remaining estimate keep changing as I re-weigh?
Because it's a straight-line projection based on your average daily rate so far, and that rate isn't actually constant. Drying is fastest early on and slows as a firmer case forms on the surface, so the estimate tends to run optimistic later in the cure. Treat it as a rough guide and let each new weigh-in correct it rather than trusting the first estimate.
Is 35-40% weight loss safe for every cut and recipe?
That range comes from UMAi Dry's general guidance for their curing bags and covers most common whole-muscle cures, but always defer to your specific recipe's target if it names a different number, salt percentage, cut, and casing all affect the safe target. When a recipe and this calculator disagree, follow the recipe.