How long do Sugar substitutes last in the pantry?
Turning the range into a date
Sugar substitutes keep 2 years sealed in the pantry. Counting 2 years forward from a date is not arithmetic anyone does reliably in their head. Give the field the day it went into storage.
- Unopened · in the pantryUse by2 years after the day you bought it
Built to sit on a shelf
This item is built to sit. It keeps 2 years outside the freezer. Among the 244 foods the USDA also gives a pantry figure, it keeps longer than 70% of them. It is long enough that the date it went into storage matters more than anything you can judge by looking at it. On the same shelf it sits 3 of 52, between Seasoning blends at 2 years and Whole wheat flour at 2 years.
Every storage figure the USDA publishes for this item
The USDA rates this item in the pantry and nowhere else, one of 84 foods of the 466 it files that way. Within Baked Goods it is filed under Baking and Cooking.
- Unopened · in the pantry2 years
- Once opened · in the pantryIndefinitely
Where the USDA answers in words instead of days
1 of the nine slots the USDA keeps for this item holds an answer that is not a number, and an answer in words is still an answer: in the pantry once opened it answers Indefinitely, so kept that way the food does not run out of time, though it can still lose quality.
Can you freeze sugar substitutes?
The USDA prints no freezer time for sugar substitutes. Frozen at 0 °F any food stays safe; whether they are still good after thawing is a matter of quality. Keep the fridge at 40 °F or below and the freezer at 0 °F.
How to tell if sugar substitutes have gone bad
Go by the date first: sugar substitutes keep 2 years sealed in the pantry. Insects, a musty or rancid smell, clumping from damp, or a swollen can mean it goes out. Any dish you cook with it follows the 2-hour rule, 1 hour above 90 °F.
Sources: USDA FSIS: the danger zone USDA FSIS: freezing and food safety FDA: are you storing food safely FoodSafety.gov: the FoodKeeper app.
Is it still safe to eat, or just past its best?
The answer at the top of this page reads 2 years in the pantry. The USDA rating this place at all is the USDA saying Sugar substitutes keeps there, so the figure rates how good it will be. Past it, whether it has gone bad is yours to judge by look and smell: this window rates quality, not the day it turns hazardous.
It is past the date. Now what?
Say the calculator above puts Sugar substitutes past its 2 years in the pantry window. Past that the calendar stops deciding and the food itself does. Mold takes the whole package out rather than the slice it grew on, and so does a musty or old-oil smell in a flour or a mix.
The whole rule, including the cases the source does not cover, is set out under what to do when the date has passed.
Items that behave the same way
All 6 of the 6 items nearest this item keep exactly as long as it does, 2 years, so the ranking around it is a tie rather than an order.
Where these numbers come from
Every storage time on this page is the USDA’s own published figure from the FoodKeeper data, one of the 9 it keeps per food, reproduced unchanged and never an estimate of ours. Where the USDA lists several kinds under one name, each kind keeps its own windows, and the page names the kind its answer is for. The dates and multipliers are ours, computed from those ranges.
Source: USDA FoodKeeper, retrieved 1 September 2026. Found a figure that does not match the source? Tell us on the contact page. How the site is built is on the method page.
USDA index terms: substitute, substitutes, sugar
KeepsUntil is an independent reference built on public USDA data. It is not affiliated with, endorsed by, or connected to the U.S. Department of Agriculture or the Food and Drug Administration. Whether a given window is a safety limit or a quality window is stated on the page that prints it.