How Long Will My Dog Food Last Calculator
Find out how many days your bag of dog food will last
Bag Size (lbs)
Dog Weight (lbs)
Food kcal/cup
Number of Dogs
How Long Will My Dog Food Last? Plan Your Shopping
Running out of dog food unexpectedly is frustrating. Our dog food duration calculator tells you exactly how many days a bag will last based on your dog’s daily food requirement. It also works for multiple dogs!
Duration Guide: Common Bag Sizes
| Bag Size | Approx. Cups | 25 lb dog (2 cups/day) | 50 lb dog (2.6 cups/day) |
|---|---|---|---|
| 5 lb bag | ~23 cups | ~11 days | ~9 days |
| 15 lb bag | ~69 cups | ~34 days | ~27 days |
| 30 lb bag | ~137 cups | ~69 days | ~53 days |
| 50 lb bag | ~229 cups | ~114 days | ~88 days |
FAQs
How long does an open bag of dog food stay fresh?
Most dry kibble stays fresh for 4-6 weeks after opening if stored properly — in an airtight container in a cool, dry place. Buying a bag that lasts longer than 6 weeks for a single dog risks the food going stale or rancid. Choose a smaller bag if needed.
Should I store dog food in the original bag?
Yes — the original bag is designed to protect freshness. The best method is to store the entire sealed bag inside an airtight container (not poured loose into a bin), which protects against moisture and pests while preserving the freshness properties of the original packaging.
Conclusion
Our dog food duration calculator helps you plan shopping trips and avoid running out. For daily portion guidance, use our dog food calculator, and track your dog’s health with our weight calculator.