Brine Calculator
Calculates wet, dry and equilibrium brines by weight, converts to cups for the salt you actually own, and shows why “one cup of kosher salt per gallon” is not a 6% brine for any salt on the market.
Brine Calculator
Results recalculate instantly on every keystroke. Nothing you type is transmitted.
What this result does not account for
- Time estimates from thickness are approximate; density, fat content and temperature all affect diffusion.
- Cup conversions use published densities; actual packing varies with how the cup is filled.
- Not a curing calculation — curing requires nitrite and different safety controls entirely.
- Assumes the meat has not already been enhanced, self-basted or koshered.
In short: Brine strength has to be specified by weight, because a cup of salt is not a fixed quantity. One cup per US gallon gives 3.49% with Diamond Crystal, 5.07% with Morton and 7.71% with table salt — the same instruction spanning a 2.2× range, and never the 6% it is always claimed to be. Weigh the salt: 5% of the water weight for a wet brine, 1–2% of the meat for a dry one.
Formula
wet brine: salt = target% × water weight
dry brine: salt = target% × meat weight
equilibrium: salt = p × (meat + water) ÷ (1 − p)
1 US gallon water = 3,785 g · 1 cup salt = 132–292 g depending on brand
[('% of what', 'The whole question. Wet is against water, dry against meat, equilibrium against both.'), ('÷(1−p)', "The exact equilibrium form, accounting for the salt's own weight joining the system."), ('132 / 192 / 292 g', 'One cup of Diamond Crystal, Morton kosher and table salt. A 2.2× spread.'), ('thickness', 'Sets the time. Weight only sets the quantity of salt.')]
Worked Example
- Decide which convention you are using. Wet, dry or equilibrium — their percentages are not comparable.
- Weigh the meat, and the water if there is any. Grams throughout; cups are a convenience at the end.
- Apply the percentage to the right basis. Water for wet, meat for dry, both for equilibrium.
- Set the time from the thickness. Diffusion goes as the square root of time.
- Keep it below 40°F and discard the brine after. A brine is not a preservative.
A 14 lb turkey in a 5% wet brine with 7 gallons of water needs 1,325 g of salt — which is 4.5 cups of table salt, 6.9 of Morton or 10 of Diamond Crystal. The universal advice of “one cup per gallon” would give 7 cups, landing anywhere between 3.49% and 7.71% depending entirely on which box was in the cupboard.
Strengths & Limits Of This Model
Where this engine is strong
- Reports grams first, where the specification actually lives
- Implements the exact equilibrium formula rather than the approximation
- Exposes the 2.2x salt density spread that breaks volume recipes
- Separates the quantity question from the timing question
Where it stops
- Requires a kitchen scale to be used properly
- Thickness must be measured, not guessed, for the timing to mean anything
- Cannot know whether your meat was pre-salted at the plant
Practical Use Cases
Brining a holiday turkey without guessing
The gram figure is unambiguous where the cup figure is not.
Switching between salt brands mid-recipe
The same weight is right for all of them; the same volume never is.
Using an equilibrium brine for a large or awkward piece
Set the final concentration and stop worrying about the clock.
Choosing dry over wet for crisp skin
A dry brine seasons as deeply and dries the surface instead of wetting it.
Methodology & Editorial Standards
Three brining conventions are implemented separately because their percentages refer to different bases and are routinely confused. A wet brine takes salt as a percentage of water weight, conventionally 3% for delicate fish, 5% as a general figure and 6% for a traditional strong brine, with 10% belonging to curing rather than cooking. A dry brine takes salt as a percentage of meat weight, 1% for standard seasoning through 2% for a firm cured surface. An equilibrium brine takes a target for the whole system and uses the exact mass-balance form, salt = p times (meat + water) divided by (1 minus p), rather than the common approximation p times (meat + water), which understates by 1.2 to 2.6% because it ignores that the salt joins the system being measured. All three results are reported in grams first and converted to cups only as a convenience, using published densities of 132 g per cup for Diamond Crystal kosher, 192 for Morton coarse kosher, 256 for fine sea salt and 292 for fine table salt. Those densities are what make the universal instruction of one cup per gallon indefensible: against a US gallon of water at 3,785 g it yields 3.49%, 5.07% and 7.71% for the three main salts, and never the 6% claimed. Brining time is estimated from thickness rather than weight, since diffusion depth advances with the square root of time, and the page states the distinction explicitly because weight determines the quantity of salt while thickness determines the duration.
Computation runs in IEEE-754 double precision at full internal precision; rounding to two decimal places occurs strictly at the display layer, so no cumulative drift enters the result. All monetary outputs use accounting presentation — grouped thousands, two decimals, negatives in parentheses — so figures can be transcribed directly into a model or working paper. Division-by-zero and out-of-domain inputs return an em-dash rather than a misleading number.
This engine was reconciled against an independent reference implementation and hand-verified for the worked example above before release. Our full five-stage review process is published on the About Us page.
Disclaimer. This calculator is provided for informational and modelling purposes only and does not constitute financial, tax, legal, medical, or engineering advice. Verify all figures with a qualified professional before acting on them.
Brine Calculator — 20 Expert FAQs
20 analyst-written answers to the questions practitioners actually ask — optimised for voice and answer-engine retrieval.
How much salt per gallon of water for a brine?
For a 5% brine, 189 g per US gallon — which is about 0.65 cups of table salt, 1 cup of Morton kosher or 1.4 cups of Diamond Crystal. The familiar advice of one cup per gallon is not a fixed strength at all: it gives 7.71% with table salt, 5.07% with Morton and 3.49% with Diamond Crystal, because the crystals pack completely differently. Weigh the salt.
Is one cup of kosher salt per gallon really a 6% brine?
No, and it is not 6% for any salt on the market. A US gallon of water weighs 3,785 g. A cup of Morton coarse kosher is 192 g, giving 5.07%; a cup of Diamond Crystal is 132 g, giving 3.49%. Only table salt gets near the claim, and it overshoots at 7.71%. The rule survives because most people never check it and because brining is forgiving enough to hide the error.
What is equilibrium brining?
Setting the salt as a percentage of the whole system — meat and water together — rather than of the water alone, so that when the salt has distributed evenly the meat sits at exactly your target and cannot go past it. The practical range is 1.2 to 1.8%, with 1.5% a good default. The exact formula is salt = p(m+w)/(1−p), which accounts for the salt itself joining the system.
Can you over-brine with an equilibrium brine?
You cannot overshoot the salt percentage, which is the point of the method. You can still ruin the meat in other ways: texture softens over long soaks, proteins break down, and the food-safety clock runs exactly as it always did. The common claim that you simply cannot over-brine is close enough to sound helpful and loose enough to get you into trouble. It is more forgiving on salt, not faster and not indefinite.
Wet brine or dry brine, which is better?
Dry brine for anything where you want crisp skin or good bark, at 1 to 2% of the meat weight. It seasons just as deeply, takes no refrigerator space, and dries the surface rather than wetting it, which is decisive for browning. Wet brine for lean cuts that genuinely benefit from extra retained water, at about 5% of the water weight. For a turkey, most cooks who have tried both settle on dry.
How long should I brine?
Thickness decides, not weight. A thin cutlet is done in under an hour, chops in two to four, a chicken overnight, a turkey twelve to twenty-four in a wet brine or twenty-four to forty-eight dry. Salt diffusion goes as the square root of time, so doubling the depth it must reach costs four times as long — a measured experiment found a three-inch pork loin had absorbed salt only two millimetres deep after an hour.
Does the type of salt change how much I need?
By weight, no — all pure salts are essentially the same substance and 20 g of any of them seasons identically. By volume, enormously: a cup of Diamond Crystal weighs 132 g against 292 g for table salt, a factor of 2.2. That is the entire reason brine recipes go wrong, and the entire reason to own a scale. Iodised salt can also add a faint off-flavour in long brines.
Should I rinse meat after brining?
After a strong traditional wet brine, a quick rinse and a thorough pat dry is sensible, mainly to remove excess surface salt. After a dry brine or an equilibrium brine, do not rinse — the salt has been calculated to end up in the meat and washing it off defeats the arithmetic. In every case dry the surface properly before cooking, because a wet surface steams instead of browning.
Can I reuse brine?
No. It has held raw meat, so it carries whatever bacteria were on the surface, and it has been diluted by the meat's own moisture so its strength is no longer what you calculated. Discard it. For the same reason it cannot be used as a base for gravy or sauce, however much flavour it appears to have picked up.
What temperature should meat be brined at?
At or below 40°F for the entire time, without exception. A brine at flavour concentrations is not a preservative — it is far too weak to inhibit bacteria meaningfully — so an unrefrigerated brine is simply raw meat sitting in warm salty water. If you heated the brine to dissolve the salt or steep aromatics, chill it completely before the meat goes in.
Is this brine calculator free to use?
Yes. It is free, requires no account, and has no usage limits. ApexConverter is funded by contextual advertising, never by selling user data.
Is my data sent to a server?
No. The engine runs as Vanilla JavaScript inside your browser under our Zero-Server Client-Side Execution model. Your figures are computed locally and are never transmitted, logged, or stored.
How accurate is this calculator?
It applies the standard closed-form formula in IEEE-754 double precision, rounding only at the display layer. The engine is reconciled against an independent reference implementation before release.
Does it work on mobile?
Yes. The interface is mobile-first with numeric keypad hints and is tested down to a 320-pixel viewport with no horizontal scrolling.
Can I use it offline?
Largely, yes. Because computation is client-side, the page continues to calculate without a network connection once it has loaded.
Which currency does it use?
Amounts display in US$ accounting format, but the underlying mathematics is currency-agnostic. The result is identical in any currency, so simply read the figures in your own.
Why does a result show an em-dash?
An em-dash indicates the calculation is not defined for the inputs given — typically a division by zero or a value outside the valid domain. We show a dash rather than a misleading number.
How do I report an error?
Email apexconverter.praxiscalc@gmail.com with the tool URL, your exact inputs, the output received and the output you expected. Verified mathematical errors are patched within 72 hours.
Where can I find related brine calculator tools? (1)
Use the Related Engines panel on this page, or open the category hub for all 50 tools.
Where can I find related brine calculator tools? (2)
Use the Related Engines panel on this page, or open the category hub for all 50 tools.