Rub Ratio Calculator: Scale Any BBQ Rub to Your Meat Weight
A rub is a ratio in parts by volume, and it goes on at 1 level tablespoon per pound of meat. Everything else is arithmetic. Put your weight and your style in below and this returns the total volume to mix, the exact quantity of every ingredient, and the salt line adjusted for whichever box is in your cupboard, because Diamond Crystal, Morton and table salt are not interchangeable by volume.
Raw weight as purchased, before trimming. That is what the butcher label says.
Mix spare to keep in a jar. Zero mixes exactly what this cook needs.
The rub is the easy half. The half that decides whether a sweet rub caramelises into bark or turns bitter is grate temperature, and the gauge in your smoker door reads dome temperature rather than grate temperature and is commonly 25 to 50°F out. A TempPro TempSwift 1 Second Instant Read Digital Meat Thermometer at $39.99 is the instrument that tells you whether you are actually at 250°F or quietly at 290°F with a sugar rub on the meat.
How does the calculator work out each ingredient?
Three steps, and you can do them on paper if you prefer. First, the total volume of rub is your meat weight multiplied by the application rate of 1 tablespoon per pound, so 12 pounds of brisket needs 12 tablespoons. Second, the parts in your chosen style are added together to give a total, and each ingredient takes its own share of the volume: an ingredient at 4 parts out of 13 gets four thirteenths of the total. Third, the salt line is converted from the Diamond Crystal kosher the ratios are written in to whichever salt you selected, by matching the weight of salt rather than the volume.
That last step is the one people skip, and it is the one that ruins briskets. A tablespoon of Diamond Crystal kosher weighs 8.8 g and a tablespoon of Table salt, fine weighs 18.3 g. Measure the same spoonful of the wrong box and you have applied roughly 2.1x the salt the recipe intended, on a cut you cannot rescue.
Which rub style should you pick?
Match the salt and sugar content to the cook rather than to the meat. The comparison below is generated from the same data the calculator uses, and the final column is the part that changes how you plan the day.
| Style | Total parts | Salt in the mix | Sugar in the mix | Salt delivered to the meat | Best for |
|---|---|---|---|---|---|
| Central Texas | 2 | 50.0% | 0.0% | 0.97% | Brisket, beef ribs, anything where the beef is the point |
| Kansas City sweet | 13 | 15.4% | 30.8% | 0.30% | Pork ribs, pork shoulder, chicken |
| Memphis dry | 11.5 | 17.4% | 0.0% | 0.34% | Spare ribs served dry, without sauce |
| Poultry rub | 8.5 | 23.5% | 11.8% | 0.46% | Wings, thighs, whole chicken, turkey |
| Coffee and chili | 10 | 20.0% | 20.0% | 0.39% | Chuck roast, tri-tip, beef short ribs |
Only Central Texas delivers a genuine seasoning dose on its own. At 50 percent salt applied at one tablespoon per pound it lands at roughly 0.97 percent of the meat weight, which is within a rounding error of the standard 1 percent dry brine. Every other style on that list delivers well under half of it, which means those rubs are a flavour and bark layer rather than a seasoning. Salt those cuts separately the night before, then apply the rub with its salt line removed. The rub ratio chart shows every style broken down ingredient by ingredient, and the brine ratio calculator handles the salting step.
What does the salt brand actually change?
The volume you measure, and nothing else. Salt is salt chemically; what differs is the shape of the crystal and therefore how much air is in a spoonful. Diamond Crystal kosher is made by a process that produces hollow flaky pyramids, table salt is a dense cube, and coarse sea salt varies more between brands than either.
| Salt | Grams per cup | Grams per tbsp | Replaces 1 tbsp baseline | Saltiness by volume | Notes |
|---|---|---|---|---|---|
| Diamond Crystal kosher | 141 g | 8.8 g | 1.00 tbsp | 1.00x | Large flakes, lots of air. The most forgiving salt to season by volume. |
| Morton kosher | 218 g | 13.6 g | 0.65 tbsp | 1.55x | Denser flakes. A cup is roughly 1.5 times as salty as the same cup of Diamond Crystal. |
| Table salt, fine | 292 g | 18.3 g | 0.48 tbsp | 2.07x | Twice the salt per cup as Diamond Crystal. Never substitute by volume. |
| Coarse sea salt | 220 g | 13.8 g | 0.64 tbsp | 1.56x | Varies by brand more than the others. Weigh it if you can. |
Never substitute curing salt containing sodium nitrite, sold as Prague powder or pink curing salt, for any salt in this calculator. It is a different product used at the exact rate printed on its packet, it carries a genuine toxicity risk if misdosed, and no rub ratio here calls for it.
When should you put the rub on?
For a salty rub such as Central Texas, the night before, refrigerated and uncovered on a rack. That turns the rub into a dry brine: salt migrates in, the surface dries, bark sets faster and poultry skin renders instead of going rubbery. For a sugar-heavy rub, apply it on the day, or split the job entirely by salting overnight and adding the sweet layer in the morning.
Mid-cook, a Smoke Kitchen BBQ Spray Bottle, 50 oz Adjustable Spritz at $27.99 lays down a fine mist rather than a stream, which is the difference between spritzing a bark and washing your rub into the drip pan. When it comes time to wrap, PH PERKHOMY Pink Butcher Paper Roll, 18 inch by 100 feet at $8.99 is the wrap that pushes a brisket through the stall without steaming the bark the way foil does, and the trade between the two is laid out in foil versus butcher paper.
How does rub interact with the cook temperature?
Directly, and it is the one interaction people miss. A rub with 30 percent brown sugar on a 275°F cook spends hours above the point where sugar caramelises and then keeps going, so the bark reads burnt rather than dark. The same rub at 225°F to 250°F builds the lacquered mahogany crust that Kansas City style is famous for. Choose the cook temperature and the rub together, using 225 versus 250 versus 275 to decide which end you want to live at, and the cook time calculator to see what the choice costs you in hours.
Grind size matters for the same reason. Coarse 16 mesh black pepper survives a fourteen hour brisket and gives the bark its texture, where fine pepper on the same cook goes sharp and dusty. Pre-ground paprika and cumin lose their aromatics within a few months of opening, so a rub built on a stale jar tastes flat no matter how precise the ratio is.
Related tools
- Rub ratio chart for every style broken down ingredient by ingredient
- Brine ratio calculator for the salting step that comes first
- Cook time calculator for how long the cook actually runs
- Internal temperature chart for USDA minimums and texture targets
- How to smoke a brisket, the cook that made salt and pepper famous
- How to smoke ribs, where a dry rub does the most visible work