How long to boil corn on the cob

The short answer: boil fresh, shucked corn on the cob for 3 to 5 minutes after the water returns to a boil. Corn still in the husk needs about 10 minutes, and frozen cobs need 5 to 8 minutes.

• Key numbers: large pot · at least 6 cups of water · 3 to 5 minutes for fresh ears · 10 minutes in the husk · 5 to 8 minutes frozen · 3 to 4 days in the fridge
• Done test: bright yellow, plump kernels that burst when pierced
• Free and paid next step: get the free recipe book starter pages (we email it to you) to save these times on a recipe card, or plan a cookout with the Meal Planner & Grocery List ($3.99).

How long to boil corn on the cob, plus prices and storage times, were checked November 4, 2026. The sections below cover a boil-time chart for every kind of corn, step-by-step boiling, batch sizes, butter and toppings, cost per ear, nutrition and storage.

Corn on the cob boil time chart

Start the timer when the water comes back to a full boil after the corn goes in.

How to boil corn on the cob, step by step

1. Shuck the corn. Pull the husks down and snap them off at the stem, then rub away the silk with your hands or a damp paper towel.
2. Fill a large pot. Use at least 6 cups of water, or about two-thirds of an 8-quart stockpot, so the ears sit fully under water.
3. Bring the water to a rolling boil. Leave it unsalted or add a pinch of sugar if your corn is not very sweet.
4. Add the corn. Lower the ears in with tongs. Snap long ears in half if they do not fit.
5. Start timing when the boil returns. Cook 3 to 5 minutes for fresh shucked corn, using the chart above for husked or frozen ears.
6. Check a kernel. Pierce one with a knife tip. It should burst with juice and look glossy and bright.
7. Lift out and butter right away. Drain on a towel for a few seconds, then butter and salt while the corn is steaming hot.

How long to boil frozen corn on the cob: 5-8 minutes

Frozen cobs go straight into the pot, with no thawing needed.

1. Bring a large pot of water to a rolling boil, enough to cover the ears completely.
2. Add the frozen cobs and wait for the water to return to a boil. This is when the timer starts.
3. Cook 5 to 8 minutes. Smaller, thinner cobs sit near 5 minutes and thick, fully frozen ears near 8.
4. Test a kernel. It should be hot all the way through, plump and bright yellow.
5. Drain, butter and serve right away.

If the cobs have partly thawed in the fridge, start checking at 4 minutes. Frozen cut kernels are different: they need only 2 to 3 minutes, so don't use the cob time for a bag of kernels.

How many ears to cook at once

Crowding the pot drops the water temperature, so the corn sits in warm water instead of boiling. These batch sizes keep the boil steady:

For a crowd, boil in back-to-back batches and hold finished ears in a cooler lined with a clean towel. They stay hot while the rest of the batches cook.

Salt, sugar or milk in the water?

You do not need any of them. Many cooks skip salt in the water and salt at the table instead, where you can taste it. A spoonful of sugar can help older ears taste sweeter. Some cooks add a splash of milk and a pat of butter to the pot for richer, creamier corn, which is a nice touch for a holiday table but not required.

Butter and topping ideas

Plain butter and salt is the classic, but corn takes almost any flavor. Roll a hot ear in one of these:

Leftover kernels are great in a corn casserole, stirred into cornbread batter or folded into a potato salad.

What corn on the cob costs per ear

Corn is one of the cheapest sides you can serve. The USDA AMS National Retail Report for grocery ads running October 24 to November 5, 2026 listed sweet corn at an average $0.55 per ear sold loose and $3.06 for a 4- to 5-ear tray. Butter is from the BLS September 2026 US city average of $3.96 per pound.

That makes 8 buttered ears for a family cookout about $4.90 total. Tracking prices like this in a grocery price book shows when corn is at its cheapest, and it fits easily into meal planning on a budget. For more ways to cut the bill, see how to grocery shop on a budget.

Corn on the cob nutrition

One medium ear (6 3/4 to 7 1/2 inches) yields about 102 grams of kernels. Based on USDA FoodData Central values for yellow sweet corn, that is roughly:

Butter adds about 50 calories per half tablespoon.

Storing and reheating boiled corn

• Fridge: refrigerate cooked corn within 2 hours and use it within 3 to 4 days, the window USDA FSIS gives for leftovers. Wrap ears in foil or cut the kernels into a sealed container.
• Freezer: cut the kernels off, spread them on a sheet pan to freeze, then bag them. Use within a few months for the best texture, as the FoodSafety.gov cold storage chart notes frozen food stays safe but loses quality over time.
• Reheat: drop cold ears into boiling water for 1 to 2 minutes, or microwave a wrapped ear for about 1 minute.
• Raw corn: keep unshucked ears in the fridge and cook them within a day or two. The sugars turn to starch the longer corn sits.

Plan the cookout and save the recipe

• Meal Planner & Grocery List, $3.99. A weekly menu grid and an aisle-sorted grocery list, so corn, butter and the rest of the cookout land on one list.
• Family Recipe Binder, $6.99. Fillable recipe pages and cards for your boil times, butter blends and favorite sides.
• Family Life Admin Bundle, $15.99 ($23.95 bought separately). Includes both printables above plus three more family organizers.

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