You only need about 3–7 minutes of actual boiling time for corn on the cob, depending on how tender and crisp you like it.

Quick Scoop

  • Fresh corn on the cob in boiling water: 3–5 minutes for tender-crisp kernels.
  • If you start the corn in cold water and bring it up to a boil: cook just 1–2 minutes once it boils.
  • Some home cooks prefer 5–7 minutes at a steady boil for slightly softer corn.
  • Frozen corn on the cob: usually 8–10 minutes in boiling water.

Simple Step‑by‑Step

  1. Fill a large pot with water and bring it to a rolling boil.
  1. Add shucked corn cobs, making sure they’re submerged.
  1. Once the water returns to a boil, start timing:
    • 3–4 minutes for crisp-tender,
    • 5–7 minutes for softer kernels.
  1. Check doneness by piercing a kernel with the tip of a knife; it should be tender but still juicy.
  1. Drain and serve right away with butter, salt, and pepper.

Little Timing Tips

  • Very fresh, sweet summer corn cooks faster and can even be eaten nearly raw, so stay closer to 3–4 minutes.
  • Leaving corn in hot (but not boiling) water keeps it warm for up to about 30 minutes without overcooking too much.
  • Boiling much longer than 10 minutes tends to make kernels dull, mushy, and less sweet.

Rule of thumb: once your water is boiling, think minutes, not tens of minutes.

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