How Long Does It Take to Boil Corn on the Cob?

Quick Answer

Fresh corn on the cob takes 4–6 minutes in boiling water. Drop the ears into a large pot of already-boiling salted water, and start timing once the water returns to a boil. The corn should be bright yellow and tender-crisp.

Boiling Times by Corn Type

Fresh Corn (In Season)

• Shucked, boiling water: 4–6 minutes
• In the husk: 7–10 minutes (husk steams the corn)
• Peak-season corn (July–September) needs the least cooking

Frozen Corn on the Cob

• From frozen, boiling water: 5–8 minutes
• No need to thaw first — add directly to boiling water

Older or Out-of-Season Corn

• Boiling water: 7–10 minutes
• Older corn has more starch and needs a bit longer

Step-by-Step Method

1. Fill a large pot with enough water to cover the corn
2. Bring to a rolling boil and add 1 tablespoon of salt (skip butter in the water — it floats and doesn't help)
3. Add shucked corn and return to a boil
4. Cook 4–6 minutes — corn should be bright yellow and tender when pierced with a fork
5. Remove with tongs and serve immediately

How to Know When It's Done

• Color: Turns from pale to bright yellow
• Texture: Kernels should pop when pressed but still feel firm
• Taste: Sweet and tender, not mushy or starchy
• A kernel should release milky juice when pierced

Common Mistakes

Overcooking is the #1 mistake. Corn goes from tender to tough and chewy quickly after 7 minutes. The sugars also convert to starch, making it less sweet.

Adding corn to cold water means uneven cooking. Always start with boiling water.

Over-salting the water — 1 tablespoon per gallon is plenty. Some cooks add a pinch of sugar instead of salt to enhance sweetness.

Boiling too many ears at once drops the water temperature and increases cook time.

Other Cooking Methods

Method	Time	Notes
Boiling	4–6 min	Classic, easiest
Grilling (in husk)	15–20 min	Smoky flavor, charred kernels
Grilling (shucked)	10–12 min	Direct char
Steaming	4–6 min	Retains more nutrients
Microwave (in husk)	3–5 min per ear	Quick, steams inside husk
Instant Pot	2 min + release	Hands-off
Oven roasting	25–30 min at 400°F	Caramelized flavor

Tips for the Best Corn

• Buy corn the day you cook it — sugars start converting to starch immediately after picking
• Keep the husks on until ready to cook for freshness
• Don't add salt until serving if you want softer kernels (salt can toughen the skin)
• Add a splash of milk to the boiling water for extra creamy, sweet results
• Butter and season after cooking, not in the water