Batch Scaling Calculator: Scale Any Recipe or Brine

Divide the yield you want by the yield you have, and multiply every ingredient by that factor: 4 servings to 12 is a factor of 3, so 2 teaspoons becomes 6. That is the factor method every extension service teaches (University of Wyoming Extension). Two things make it accurate in practice: weigh what you can, because 3 times 2/3 cup is easier to get right as 3 times 150 g, and check the factor before you check the ingredients, since a wrong factor is wrong on every line. This calculator does the division, the multiplication, and the unit clean-up, and shows the factor first so you can see it.

Salt, water, sugar, vinegar, and curing salt do, always, because a brine is a percentage and the percentage has to hold. Aromatics and spices often do not: University of Wyoming Extension's scaling guide says to "increase the seasonings by an extra 50% in recipes that are doubled" and to start low and taste, which this page reads as 150% of the original rather than 200%. That is why this page has a toggle that scales aromatic lines at 75% of the linear amount at 2x and above, and applies it only to lines it recognizes as herbs, spices, garlic, citrus, and the like. Leavening in baking is a separate story and is not something a brine has.

It does not, in the way people expect. Brining time depends on the thickness of the piece, not on how many pieces are in the brine: twenty 1-inch pork chops take the same 30 minutes to an hour as one. Cooking time depends on the thickness of the piece and the heat of the oven. What a bigger batch changes is the time it takes for a large pot of brine to cool to 40°F (4°C) before the meat goes in, and how crowded the oven is. This calculator marks lines with hours, minutes, or degrees as not scaled and leaves the numbers alone; the brining time calculator gives the hours by cut.

Yes; the math is the same at 50 as at 5. The limits are physical: a 5-gallon brine needs a 6-gallon food-grade container and a refrigerator that can hold it at 40°F (4°C) or below, and a very large pot of brine cools slowly, so chill it before the meat goes in. Above a factor of about 10, test the scaled recipe once at a smaller size before the event. The calculator accepts factors up to 50; past that, scale in two steps so you can sanity-check the middle. The commercial scale calculator handles brines by the hundred gallons and the container size calculator picks the vessel.

Scale the salt and the water by the same factor and the percentage takes care of itself; this calculator reports that percentage (salt divided by water, or by water plus vinegar for a pickle brine) so you can see it did not move. What you should not do is scale the salt by taste or round it to a friendlier spoon measure, because a percentage point changes the result. Weigh the salt. If you do not have a recipe and want to build a brine at a chosen strength, use the brine percentage calculator; USDA publishes no brine percentage, so the strengths on this site come from the salt makers' directions and test-kitchen recipes.

It reads one ingredient per line: an amount (whole numbers, decimals, fractions like 1/2 and 1 1/2, and the typed fraction characters), an optional unit, and the name. A word after the amount counts as a unit only if it is in the unit list (teaspoon through gallon, gram through pound, milliliter and liter, and their abbreviations); anything else is treated as a count, so 4 bay leaves is 4 bay leaves and 6 cloves garlic is 6 cloves, not 6 cups. Lines with hours, minutes, or degrees are left alone, as are lines with no number. Read the parsed table before you trust it; a line that starts with a parenthesis or a brand name may need a quick edit.

Cost scales with the same factor as the ingredients, so a recipe that costs $12 at 4 servings costs $36 at 12, and the cost per serving does not change unless your prices change with the quantity. This page does not take prices; the cost calculator on this site does, line by line with the price per unit, and it gives cost per serving and per batch. Scale the recipe here first, then price the scaled quantities there.

Reading a count as a cup (the reason this page's parser checks the unit list), scaling the salt and the water by different factors, rounding a scaled salt weight to a convenient spoon, multiplying the brining or cooking time by the factor, and forgetting the container: 2 gallons of brine plus a turkey does not fit in a 2-gallon bucket. The other one is trusting a big single batch over several proven small ones; a recipe that works at 4x is not guaranteed at 10x, so test once at the new size before it matters.

No. Brining time follows thickness, cooking time follows thickness and temperature, and neither follows the number of pieces or the volume of brine. Double a chicken-thigh brine and the thighs still brine 30 minutes to 2 hours. The one time that does grow with the batch is chilling: a larger pot of hot brine takes longer to reach 40°F (4°C), so make the brine earlier. The calculator leaves any line with a time or temperature unscaled and says so in the table.

Yes, with a factor under 1: half the recipe is 0.5, a quarter is 0.25. The calculator converts the results down to units you can measure (1/2 tablespoon becomes 1 1/2 teaspoons, 1/2 quart becomes 2 cups) and rounds counts to the nearest quarter, so 3 bay leaves halved shows 1 1/2. Below a factor of about 0.25, amounts get too small to measure by spoon; weigh them, and remember that a small piece of meat brines faster than the recipe's original. The calculator's floor is 0.05; scale in two steps below that.

The calculator does the conversion: results are shown in the unit a cook would reach for (teaspoons up to 2 1/2, then tablespoons, then cups in quarters and thirds, then quarts and gallons when the number is whole), and metric results move between milliliters and liters and grams and kilograms. Where a fraction is not clean, you get a decimal, or a cups-plus-tablespoons form. For salt the answer is always in grams first, with the spoons of the named salt as a check, because salt is the one ingredient where rounding to the nearest spoon changes the result.

The factor method (desired yield divided by original yield) and the seasoning rule ("increase the seasonings by an extra 50% in recipes that are doubled," read here as 150% of the original) are from University of Wyoming Extension's recipe scaling guidance. The unit conversions use the NIST SP 811 factors for the teaspoon, tablespoon, cup, quart, gallon, ounce, and pound. Salt weights per spoon come from the makers' nutrition labels (Diamond Crystal 0.7 g and Morton 1.2 g per 1/4 teaspoon, USDA's 6 g per teaspoon for table salt) and, for the specialty salts, from test-kitchen measurements marked approximate. The 40°F refrigeration figure is USDA FSIS. The references at the bottom of the page link each source.