How long does Spaghetti sauce last in the fridge once opened?
Turning the range into a date
Spaghetti sauce keeps 4 days in the fridge once opened. Two clocks run on this item: one from the day it went into storage and one from the day the seal broke. Both are listed below, 2 rows in all.
- Unopened · in the pantryUse by18 months after the day you bought it
- Once opened · in the fridgeUse by4 days after the day you opened it
What opening the package actually costs
Opening the package is the decision that settles this page. Sealed, the item holds 18 months sealed in the pantry; once open it holds 4 days open in the fridge, the same food measured in days instead of months, a drop of 135 times. On the same shelf it sits 16 of 41, between Jams, jellies, and preserves at 18 months and Barbecue sauce at 1 year.
Every storage figure the USDA publishes for this item
The USDA gives this item a pantry and a refrigerator figure and no freezer figure at all, the pattern behind 79 of the 466 foods in the data.
- Unopened · in the pantry18 months
- Once opened · in the fridge4 days
Can you freeze spaghetti sauce?
The USDA prints no freezer time for spaghetti sauce. Frozen at 0 °F any food stays safe; whether it is 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 spaghetti sauce has gone bad
Go by the date first: spaghetti sauce keeps 4 days in the fridge once opened. A bulging, leaking or badly dented can, or a jar whose lid has popped, goes out unopened; so does mold or fizzing in an opened one. Once opened, keep it in the fridge at 40 °F or below.
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 4 days in the fridge once opened. Nothing here names the food: neither Spaghetti sauce, in jars nor the heading it sits under says whether it spoils dangerously or keeps itself. Past it, take the shorter of the two answers: we would rather print that the record does not settle it than pick one for you.
The figure in the pantry here is a quality window. The same page carries windows of more than one kind, so which sentence applies depends on which row you are reading, not on the food.
It is past the date. Now what?
Say the calculator above puts Spaghetti sauce, in jars past its 4 days in the fridge once opened window. If the food is moist, low in acid and ready to eat — a sauce, a drink, a filling — treat the date as a limit and throw it out untasted; otherwise look and smell, and out it goes if either is off.
The USDA's limit for perishable food standing at room temperature is 2 hours, or 1 hour when the kitchen is above 90 °F, and that clock runs whatever the storage figure says. 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
Every one of the 6 nearest items keeps the same or less, 1 year to 18 months against the 18 months of this item, which makes it the durable end of the cluster.
- Jams, jellies, and preserveskeeps exactly as long
- Barbecue saucekeeps 4 months in the fridge once openedbottled · up to 1 year sealed in the pantry
- Chutneykeeps 1–2 months in the fridge once openedup to 1 year sealed in the pantry
- Ketchup, cocktail, or chili saucekeeps 6 months in the fridge once openedup to 1 year sealed in the pantry
- Marinadeskeeps 6 months in the fridge once openedup to 1 year sealed in the pantry
- Pickleskeeps 1–3 months in the fridge once openedup to 1 year sealed in the pantry
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: in jars, jar, jars, sauce, spaghetti, Spaghetti sauce
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.