Marinade Ratio Calculator
Calculate the right marinade volume and ingredient ratios for any cut and weight of meat. Use this when prepping a roast, chicken thighs, or a steak overnight so every ounce is evenly coated.
About this calculator
A well-balanced marinade relies on three core components: acid (citrus juice, vinegar), oil, and aromatics/seasonings. The acid tenderizes protein fibers while the oil carries fat-soluble flavor compounds into the meat. This calculator converts your meat weight from pounds into fluid ounces (×16), then applies a marinade-style multiplier that reflects how heavily you want to coat the cut. The full formula is: marinade (fl oz) = meatWeight × 16 × marinadeStyle × (1 + acidRatio/100 + oilRatio/100). The acid and oil ratios scale the total volume upward so the proportions of each component hit culinary-standard targets — typically 3:1 oil-to-acid for most styles. Adjusting the style multiplier lets you move between light glazes and heavy wet marinades.
How to use
Suppose you have 2 lbs of chicken thighs, a standard marinade style (multiplier = 0.1), 25% acid ratio, and 50% oil ratio. Step 1: Convert weight — 2 × 16 = 32. Step 2: Apply style — 32 × 0.1 = 3.2. Step 3: Apply component ratios — 3.2 × (1 + 25/100 + 50/100) = 3.2 × 1.75 = 5.6 fl oz total marinade. That 5.6 fl oz would break down as roughly 1.9 fl oz acid and 2.8 fl oz oil, with the remainder as seasonings.
Frequently asked questions
How much marinade do I need per pound of meat?
Most culinary guidelines recommend roughly 3–4 fl oz of marinade per pound of meat for a standard wet marinade. Thicker cuts like pork shoulder or beef chuck may need slightly more because the surface area relative to volume is higher. This calculator adjusts that baseline using your chosen marinade style multiplier, so lighter glazes use far less liquid while heavy brines use more. The goal is full surface coverage without excess pooling at the bottom of the bag.
What is the correct acid-to-oil ratio in a marinade?
The classic starting point is a 1:3 acid-to-oil ratio — one part acidic ingredient (lemon juice, vinegar, yogurt) to three parts oil. This ratio ensures the acid does not denature the surface proteins too aggressively before cooking. For very delicate proteins like fish or shrimp, cooks often reduce the acid ratio further to avoid a 'cooked' texture from over-marinating. This calculator lets you dial in the exact percentages so you can see how deviating from the classic ratio affects total volume.
How long should I marinate meat for the best flavor penetration?
Marinade penetration is shallower than most people expect — flavors typically only reach 1–3 mm below the surface regardless of time. For thin cuts like chicken breasts or fish fillets, 30 minutes to 2 hours is sufficient, and longer marinating risks a mushy texture from excessive acid exposure. Thicker cuts like a whole leg of lamb benefit from 8–24 hours simply because more surface contact time improves crust flavor. The calculator helps ensure you mix enough marinade to fully coat the meat during the entire marinating window.