How Long Will My Dog Food Last Calculator

Every time I buy a new brand/size bag, of dog food, I face the same old conundrum – how long will it last us?

I’ve spent my fair share of time over the years calculating this manually. But no more.

I decided to create a calculator that allows you to work out quickly how many days your bag will last you, factoring in its size, and how many cups you feed.

So without further ado, here is my handy calculator that will help get a better idea of when it will likely run out, or need replacing:

How Much Should Your Dog Eat Per Day?

The amount a dog should eat depends on two primary factors; their age along with their breed (and subsequent size).

The following are general recommendations for adults of the different breed size classifications:

Toy Breeds (3-6 pounds): 1/3 cup to 1/2 cup per day.
Small Breeds (10-20 pounds): 3/4 cup to 1 1/2 cups per day.
Medium Breeds (30-50 pounds) 1 3/4 to 2 2/3 cups per day.
Large Breeds: (60-100 pounds) 3 to 4 1/2 cups per day, plus 1/3 cup for every 10 pounds over 100 pounds.

For puppies, a simple rule is to feed them 20g per 2 lbs of their body weight per day. So, if you have a puppy weighing 10 lbs, they will need ~100g (0.2 lbs) per day. This equates to around 2 cups per day.

Regardless of your dog’s age, it is essential to check in with your

Treats should make up no more than 10% of your dog’s daily total calorie intake.

Using these numbers, you can therefore begin to work out how long your bag should last in the calculator above or reference table below.

How Long Will A Bag Of Dog Food Last?

For Toy Breeds

Bag Size (In Pounds)	Days Lasted for Toy Breed
5 lbs	40-60
10 lbs	80-120
15 lbs	120-180
20 lbs	160-240
25 lbs	200-300
30 lbs	240-364
35 lbs	280-425
40 lbs	320-484
45 lbs	360-545
50 lbs	400-606

Note: Numbers are based on the average serving size for breed weight and on the assumption that there are 4 cups in an lb of dog food. Numbers are also rounded up to ensure you have enough food for every day.

For Small Breeds

Bag Size (In Pounds)	Days Lasted for Small Breed
5 lbs	14-27
10 lbs	27-54
15 lbs	40-80
20 lbs	54-107
25 lbs	67-134
30 lbs	80-160
35 lbs	94-187
40 lbs	107-214
45 lbs	120-240
50 lbs	134-267

For Medium Breeds

Bag Size (In Pounds)	Days Lasted for Medium Breed
5 lbs	8-12
10 lbs	16-23
15 lbs	23-35
20 lbs	31-46
25 lbs	38-58
30 lbs	46-69
35 lbs	53-80
40 lbs	61-92
45 lbs	68-103
50 lbs	75-115

For Large Breeds

Bag Size (In Pounds)	Days Lasted for Large Breed
5 lbs	5-6
10 lbs	9-14
15 lbs	14-20
20 lbs	18-27
25 lbs	23-34
30 lbs	27-40
35 lbs	32-47
40 lbs	36-54
45 lbs	40-60
50 lbs	45-67

FAQs

How long should a bag of dog food last?

The duration a bag of dog food lasts depends on the weight of the bag, the daily consumption rate, and the dog’s size. Monitor the recommended serving size and adjust based on your dog’s specific needs.

How Can I Make My Dog Food Last Longer?

To make dog food last longer, store in a cool, dry place, use airtight containers, follow portion recommendations, and avoid overfeeding. Ensure food remains fresh and free from moisture or pests.

How Long Will Dog Food Last In A Sealed Container?

In a sealed container, dog food can last several months. The container protects it from moisture, pests, and oxidation. However, always check the expiration date and ensure it smells and looks fresh before feeding your dog.

Other calculators that you may be interested in:

Jeremy Williams

I am an experienced pet owner with decades of experience owning a number of different pets, from traditional pets like dogs and cats, to the more exotic like reptiles and rodents. I currently own a Cockapoo (pictured) called Bailey. I am also the main writer and chief editor here at Pet Educate; a site dedicated to sharing evidence-based insights and guidance, based on my vast pet ownership knowledge, experience, and extensive research.

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