Marinade Ratio Calculator
A well-balanced marinade has three components: oil (to carry fat-soluble flavor compounds and prevent sticking), acid (to add brightness and mildly tenderize the surface), and seasonings (salt, herbs, spices, aromatics). The classic 3:1 oil-to-acid ratio is the most versatile starting point. This calculator takes the weight of what you want to marinate, calculates the total marinade volume needed based on standard coverage guidelines, then breaks that volume into oil and acid amounts. It also provides maximum safe marinating times by food type to prevent over-marinating, which causes mushy textures especially in fish and poultry.
Marinade ratio formula
Total marinade (tbsp) = food weight (lbs) * 6 tbsp/lb
Oil (tbsp) = total * (ratio / (ratio + 1))
Acid (tbsp) = total * (1 / (ratio + 1))
Remaining capacity: aromatics, salt, herbs (about 10% of total)
Marinade safety rules
- Always marinate in the refrigerator, never at room temperature.
- Use a non-reactive container: glass, food-safe plastic, or stainless steel. Avoid aluminum or cast iron.
- Never reuse marinade that has touched raw protein. Reserve a separate portion as a sauce if needed.
- If using leftover marinade as a sauce, boil it vigorously for at least 1 minute to destroy bacteria.
- For even coverage, use a zip-lock bag and turn the bag every few hours.
Marinade: frequently asked questions
What is the standard marinade ratio?
The classic marinade ratio is 3 parts oil to 1 part acid (such as vinegar, citrus juice, or yogurt). A common example: 3 tablespoons olive oil, 1 tablespoon lemon juice, plus salt, pepper, and aromatics. This ratio works for most proteins and vegetables.
How much marinade do I need per pound of meat?
Use about 1/4 to 1/2 cup (60-120 ml) of marinade per pound of meat. The exact amount depends on the container size and how you marinate (zip-lock bag, bowl, or baking dish). The meat should be mostly submerged or well-coated.
How long should I marinate different proteins?
Fish: 15-30 minutes maximum (acid denatures protein and creates a mushy texture if left too long). Poultry: 2-24 hours. Beef and pork: 2-24 hours. Tough cuts like flank steak or brisket: up to 48 hours. Vegetables: 30 minutes to 2 hours.
Can I reuse marinade?
No. Never reuse marinade that has been in contact with raw meat, poultry, or seafood. It contains harmful bacteria. If you want a sauce from the marinade, set aside a portion before adding raw meat, or boil the used marinade for at least 1 minute before using it as a sauce.
Does acid in marinade tenderize meat?
Mildly. Acid partially denatures surface proteins, which can soften the exterior. However, excessive marinating in acidic marinades actually makes meat mushy and tough. The flavor penetration of a marinade is limited to the outer few millimeters regardless of time.
Official sources
- USDA Food Safety and Inspection Service: Marinating Food Safely.
- USDA FSIS: Refrigeration and Food Safety.
Reviewed by the CalculatorHub team, edited by James Graham, 14 June 2026. See our methodology.