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How Long Does a Bag of Dog Food Last? (All You Need to Know)

Helping your dog maintain a healthy food habit is among the most important factors in taking care of your pet. You should be careful not to overfeed or under-feed your dog.

But how much dog food should you allow your dog? And how long does a bag of dog food last? We will here discuss these critical aspects of caring for your dog. Read and find out!

How long does a bag of dog food last?

How long a bag of dog will food last mainly depends on the size of the bag, your dog’s age, and food habits. In general, a 40-pound bag of dog food is supposed to last about a couple of months. On the other hand, a 30-pound bag of dog food will last a little over a month. 

There are several factors that you will have to take into account while calculating how long a bag of dog food will last. For example, you should factor in the age of your dog, its size and breed, food habits, and the size of the bag.

Consider the age and breed of your dog to determine how much dog food you should allow them per meal.

For an average activity level, you should allow 1/4 to 1 cup of dog food for a companion breed. On the other hand, if you’re caring for a smaller breed, then allow them about 1 cup to 1 and 2/5 cups of dog food per meal.

For medium-sized breeds, allow dog food measuring 2 cups to 2 and 2/3 cups of dog food per meal. And finally, for larger breeds of dogs, you should allow them about 2 4/5 to 3 cups of dog food per meal.

Let’s take a look at different sizes of dog food bags and how long they generally last.

PEDIGREE Complete Nutrition Adult Dry Dog Food Roasted Chicken, Rice & Vegetable Flavor Dog Kibble, 33 lb. Bag

4 lb:

A 4 lb bag of dog food will last about 8 days for an average-sized dog, considering that you allow them three meals a day.

6 lb:

If we consider that you allow your dog 2 cups of dog food per day, then a 6 lb bag of dog food will last you roughly 12 days.

15 pound:

Let us consider that your dog is used to having 2 cups per day. So a bag of 15-pound dog food will last about 30 days.

18 lb:

A bag of dog food weighing 18 lb will last your dog for about 36 days. That is if your dog has 3 meals a day, each measuring about 2 cups.

25 pound:

A dog food bag of 25 pounds will last your dog roughly 50 days if they are allowed 3 meals per day.

DIAMOND NATURALS Dry Food for Adult Dogs, Large Breed 60+ Chicken Formula, 40 Pound Bag, 40 lb (838_40_DBD)

30 lb:

A 30-pound bag will last your dog something between one and a half months to two months. This is considering that you allow your dog to eat 2 cups of dog food a day.

35 pound:

A bag of 35 pounds of dog food will last about 10 weeks if your dog has 2 cups of dog food a day.

40 pound:

A 40-pound dog food will last for more than 2 months, depending on the food habit and size of your dog.

Taste of the Wild Dry Dog Food With Roasted Fowl

10 kg:

A dog food bag of 10 kgs will last about 45 days, considering that you are taking care of an average-sized dog.

20 kg:

A bag of 20 kg dog food is supposed to last for about 2 to 3 months.

How many cups are in a 30-pound bag of dog food?

Each pound of dog food translates to 4 cups. So a bag of dog food weighing 30 pounds contains about 120 cups of dog food.

What weight is a cup of dog food?

One cup of dog food measures about 4 ounces. And in terms of grams, the weight of a cup of dog food is about 114 grams.

How many cups of food should my dog eat?

There are several indicators that you will have to consider when measuring how many cups of food your dog should eat. For example, you will have to consider the breed, size, age, and activity level of the dog. Not to mention, you will have to consider its food habits as well.

If you’re caring for a large adult dog, you will have to feed them about 2 and a half to 3 cups of dog food per day.

To feed an adult dog of medium size, you will need about 2 to 2 2/3 cups of dog food per day.

On the other hand, smaller breeds of dogs will need about 1 to 1 2/5 cups of dog food per day.

Note that if you’re caring for puppies or senior dogs, then the food quantity should be lesser than the average measurement.

Purina ONE Natural Dog Food, SmartBlend Chicken and Rice Dog Food Formula - 40 lb. Bag

How many cups of food should a 60-pound dog eat?

A 60-pound dog is considered to be a dog of a large breed. A 60-pound dog should eat about 3 cups of dog food per day. And if they have high activity level, then you may consider increasing the quantity by a bit.

As the dog grows older, you will have to reduce the quantity of food that you are allowing. Since older dogs are less active and rest for most of the day, they do not need as much food. 

How to calculate dog food amount?

It is important that you sincerely measure the amount of dog food that your dog should be eating per day. The quantity bears great significance, and you should always be careful not to allow them too much or too little food.

Dogs who are not consuming food in the right quantity may suffer from several diseases, including Cushing’s disease, heart failure, skin disorder, and more.

Here are some steps that you can follow to calculate the dog food amount for your dog:

Canidae PURE Grain Free, Limited Ingredient Dry Dog Food, Salmon and Sweet Potato, 24lbs

Consider the important factors that are involved:

Measuring the right quantity of dog food for your dog entails factoring in several indicators. You will need to take into account factors such as the type of dog food, calories per meal, and the number of meals that you are allowing your dog.

In addition, you should consider the activity level, metabolic rate, size, and weight of your dog.

Calculate the weight of your dog and the quantity of food:

After you have considered all the important factors, you should take a look at the recommended quantity suggested by experts.

A rule of thumb for calculating the amount of food a dog should have is that for every 10 pounds, you should provide about 1/3 cup of food.

For example, a dog weighing 3 pounds should be allowed about 139 calories or 1/3 cups of dog food per day, while one that weighs 6 pounds should have half a cup per day.

A small dog weighing 10 pounds should have 3/4 cups of dog food per day. On the other hand, a dog measuring 20 pounds should have 1 3/4 cups of dog food.

As for the medium breeds, a dog weighing 40 to 50 pounds should have between 2 to 2 1/2 cups of dog food. And larger dogs weighing between 60 to 100 pounds should be having 3 to 4 1/2 cups of dog food per day. 

Diamond Naturals Dry Food for Adult Dogs, Chicken and Rice Formula, 40 Pound Bag

Does dog food go bad?

Yes, dog food will go bad if you do not store them properly. If you fail to seal the bag of dog food properly after opening it once, then it may get damp or stale. Make sure to store the bag properly in an air-tight bag or container.

Moreover, if you keep a bag of dog food on the shelf for too long, then it may go bad as well, even if you store the bag properly. The average shelf life of dog food is between 12 to 18 months. It should be consumed within that period.

How long does an open bag of dry dog food last?

An open bag of dry dog food may last for up to 6 to 10 weeks. And if you fail to seal the bag properly in an air-tight bag, then the bag of dry dog food will go bad even faster.

It is recommended that you store the bag in a cool and dry place, and prevent moisture from getting in.

Amazon Brand

Final Thoughts:

A bag of dog food can last several weeks, depending on the size of the bag, the weight of your dog, its lifestyle, activity level, etc. Calculate the right amount that you should feed your dog. A 30-pound bag of dog food contains 120 cups and will serve an average-sized dog from one to two months.