How Long Does Ketchup (Opened) Last?
Opened ketchup bottle.
The Short Answer
Ketchup (Opened) lasts 180–365 days in the refrigerator when stored properly at 40°F or below. At room temperature in the pantry, expect 30–30 days under normal conditions. These times are based on USDA food safety guidelines and assume proper storage conditions.
Storage Times at a Glance
Source: USDA FoodKeeper | Last verified: March 19, 2026 | Our methodology
Ketchup's high vinegar and sugar content makes it remarkably shelf-stable. It can technically sit on the counter for a month, but refrigeration preserves the flavor and color much longer.
How to Store Ketchup (Opened)
Store in the fridge after opening for best quality. The high acidity and sugar content make ketchup one of the longest-lasting condiments.
How to Tell if Ketchup (Opened) Has Gone Bad
Look for these signs that ketchup (opened) has spoiled: darkened color, watery separation, off smell, mold around the cap.
The Professor's rule: When in doubt, throw it out. No meal is worth food poisoning.
The Bottom Line
Properly stored ketchup (opened) stays safe for 180–365 days in the fridge. Always store in airtight containers, refrigerate within 2 hours of purchase or preparation, and trust your senses. If something looks, smells, or feels off, discard it regardless of how many days it has been.
Frequently Asked Questions
Technically no, thanks to its acidity and sugar. But it tastes better and maintains color longer when refrigerated. Restaurants leave it out because they go through bottles quickly.