Unopened hot dogs last about 2 weeks in the fridge, while opened or cooked hot dogs are only safe for about 1 week (and usually 3–4 days for cooked, for best quality). Always throw them out sooner if they smell sour, feel slimy, or look dull/grey, even if you’re still within these time frames.

Quick Scoop

  • Unopened in the fridge:
    • Typically safe for up to about 2 weeks at or below 40°F (4°C), as long as the package stays sealed and cold.
  • Opened in the fridge:
    • Aim to eat within 1 week; after opening, the preservatives and seal protection are reduced, so bacteria can grow faster.
  • Cooked hot dogs (leftovers):
    • Best eaten within 3–4 days, up to about a week at most, stored in an airtight container in the fridge.

Simple storage rules

  • Keep the fridge at or below 40°F (4°C) for safe storage.
  • Store opened hot dogs in:
    • Airtight containers, or
    • Resealable bags with as much air pressed out as possible.
  • Do not leave hot dogs (raw or cooked) out at room temperature for more than 2 hours; 1 hour if it’s very warm (above about 90°F / 32°C).

When to throw them out

Toss your hot dogs if you notice:

  • A sour or off smell.
  • A sticky or slimy surface.
  • Color changes (grey, brown, or dull patches) or mold.

Even if the printed date hasn’t passed, any of these spoilage signs mean the hot dogs are no longer safe to eat.

Freezer option

  • Unopened or opened hot dogs can be frozen for about 1–2 months without major quality loss, if wrapped tightly and kept at 0°F (-18°C) or below.
  • Thaw in the fridge only, then follow the same “1 week after opening / a few days after cooking” guidance.

Forum-style TL;DR

If the pack is still sealed and cold, think about up to 2 weeks in the fridge. Once opened, give yourself a 1‑week clock , and for cooked leftovers, try to finish them in 3–4 days. When in doubt—smell, look, feel… and if anything seems off, just bin them. Your stomach will thank you later.

Information gathered from public forums or data available on the internet and portrayed here.