How Long Food Lasts

Cheese

How long does cheese last once opened?

Cheese (hard such as cheddar, swiss, block parmesan, opened) keeps 3-4 weeks in the refrigerator.

Fridge

After opening

3-4weeks

Freezer

Can be frozen: yes

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Pantry

No known time

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Mine has been in the fridge for

Refreeze after thawing in the fridge?

United States
Yes
United Kingdom
Only after cooking

How long does cheese last in the refrigerator?

  • Hard such as cheddar, swiss, block parmesan, opened3-4 weeksAfter opening

Refrigerators should be set to maintain a temperature of 40 °F or below.

Your fridge should be set between 0 and 5°C.

Other forms

FormFridgeFreezerPantry
Hard such as cheddar, swiss, block parmesan4-6 months2 months-
Parmesan; shredded or grated12 months--
Shredded; cheddar, mozzarella, etc.1 month3-4 months-
Processed slices3-4 weeks--
Soft such as brie, bel paese, goat1-2 weeks--
General guidance-6 months-

What the official sources say

“Cheese, hard - Cheddar, Swiss, block Parmesan, etc. - 6 months (unopened); 3 to 4 weeks (opened)”

“Opened packages of hard and wax coated (such as Cheddar, Edam, Gouda, Swiss, brick) cheese 3 to 4 weeks”

Sources

We always show the most cautious time among official sources. Last verified: October 1, 2026.