How Long Does Icing Sugar Last in the Fridge?
Written by Jordan Morley · Storage times from the USDA FoodKeeper database · Last updated 28 October 2026
Icing Sugar is a cupboard food — see the storage times below.
Storage tips for icing sugar
- Fridge at 0–5°C. A fridge thermometer is the cheapest food-safety upgrade — many home fridges run warmer than their dial suggests.
- Sugar never spoils, but for best quality use within 2 years of opening.
You can also check the calorie content of icing sugar alongside its safety information. Want to know exactly what's in your food? Our ingredient checker covers E-numbers, allergens and vegan status.
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Store it properly
Fridge thermometer
These storage times assume 0–5°C — check what your fridge actually runs at.
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More storage essentials
Vacuum food sealer
Removes the air that speeds spoilage — extends shelf life by days.
Check Price →Airtight glass containers
Fridge, freezer and microwave safe — one less transfer step.
Check Price →Common questions
How long does icing sugar last?
The FoodKeeper database gives no fridge time for icing sugar; it is a cupboard food, good for indefinitely. Ripe fruit and vegetables that are normally stored outside the fridge are the usual exception.
How can I tell if icing sugar has gone off?
Rancid or stale smells, clumping, insects, mould and bulging, leaking or rusted tins are all reasons to throw it away. Do not rely on this alone: the time guideline matters even when everything looks fine.
Can I freeze icing sugar to keep it longer?
Freezing is not recommended for this food; the texture tends to suffer badly. Buy or cook only what you will use in time.
Where should I store icing sugar?
In the cupboard, for around indefinitely. Sugar never spoils, but for best quality use within 2 years of opening.
Related answers
Primary source: USDA FoodKeeper.
General information only, not medical advice: see the medical disclaimer. Feeling unwell after eating something? Contact NHS 111 or your GP.