How Long Should You Soak Beans?

Quick Answer

For most dried beans, soak them 8 to 12 hours (overnight) in plenty of cool water for even cooking and better texture. If you're short on time, the quick-soak method — boil for 2 minutes, then cover and rest for 1 hour — works nearly as well. Soaking shortens cooking time, promotes even cooking, and can make beans easier to digest.

Soaking Methods Compared

Method	Soak Time	Best For
Overnight (long) soak	8–12 hours	Best texture, most digestible
Quick soak (boil + rest)	1 hour	Same-day cooking
Hot soak (boil, then rest)	2–4 hours	Reducing gas-causing sugars
No soak	0 hours	Small beans (lentils, split peas) or pressure cooking

Soak Time by Bean Type

Bean	Recommended Soak
Kidney beans	8–12 hours
Chickpeas (garbanzo)	8–12 hours
Black beans	6–8 hours
Pinto beans	8 hours
Cannellini/great northern	8 hours
Lentils	No soak needed
Split peas	No soak needed
Black-eyed peas	2–4 hours (optional)

Factors That Affect Soaking

• Bean size and age: Larger and older beans need longer soaking; very old beans may never fully soften.
• Water temperature: Hot-soaking speeds hydration and reduces gas-causing oligosaccharides.
• Water quantity: Beans expand 2–3x, so use at least 3 cups of water per cup of beans.
• Hard water and salt: A little salt actually helps beans cook evenly; overly hard or mineral-heavy water can slow softening.
• Cooking method: Pressure cookers and Instant Pots can cook unsoaked beans well, making soaking optional.

Tips for Perfect Beans

• Discard the soaking water and cook in fresh water to reduce gas-causing compounds.
• Add salt to the soak or cooking water — it seasons the beans and, contrary to old advice, helps them cook evenly.
• Skip acidic ingredients (tomatoes, vinegar) until beans are tender, as acid slows softening.
• Don't soak lentils or split peas — they cook quickly without it.
• Kidney beans must be boiled hard for at least 10 minutes to destroy a natural toxin (phytohaemagglutinin); never cook raw kidney beans in a slow cooker at low temperatures.

Food Safety Note

Don't soak beans at room temperature for more than about 12 hours, especially in warm kitchens, since they can begin to ferment or grow bacteria. For longer soaks, place the bowl in the refrigerator. Raw or undercooked kidney beans are toxic, so always bring them to a full boil before simmering.