How Many Cups in a Pound of Dog Food? Cups Per Bag and How Long It Lasts
There are about 4 cups of dry dog food in a pound. Most kibbles weigh 3½ to 4½ ounces per 8-ounce measuring cup, so a pound works out to roughly 3½ to 4½ cups depending on kibble size and density. Using 3¾ cups per pound as a working average, a 15 lb bag holds about 56 cups, a 30 lb bag about 112 and a 40 lb bag about 150. How long a bag lasts depends on your dog's daily cups, which depend on the calories per cup. Here are the tables, the exact method for your food, and how to pick a bag size you will finish while it is fresh.
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How Many Cups Are in a Pound of Dog Food
A "cup" of dog food means a standard 8-fluid-ounce measuring cup, the one every feeding chart is written for. Fluid ounces measure volume, not weight, and kibble is lighter than water, so a cup of dry food weighs about 3½ to 4½ ounces rather than 8. Small, dense kibble packs tighter and weighs more per cup; large, airy kibble weighs less. That gives:
| Kibble weight per 8 oz cup | Cups per pound |
|---|---|
| 3½ oz (dense, small kibble) | about 4½ |
| 4 oz (typical) | 4 |
| 4¼ oz | about 3¾ |
| 4½ oz (large, airy kibble) | about 3½ |
One pound = 16 oz. Cups per pound = 16 ÷ ounces per cup.
The exact answer for your bag takes one minute: put a level measuring cup of kibble on a kitchen scale, note the ounces, and divide 16 by that number. Do it once per food and you can plan every bag from then on. The tables below use 3¾ cups per pound, the figure we use across shop.bullymax.com for Bully Max foods, so a bag of a lighter kibble will run a few more cups and a denser one a few fewer.
How Many Cups in a Bag of Dog Food
| Bag size | Cups in the bag (est. at 3¾ cups/lb) | Bully Max bags this size |
|---|---|---|
| 4 lb | about 15 | PRO Series 31/25 |
| 5 lb | about 19 | 30/20 Chicken, 30/20 Beef, 25/11 Lamb, 24/14 Puppy |
| 8 lb | about 30 | PRO Series 31/25 |
| 10 lb | about 38 | 24/14 Puppy, 25/11 Lamb |
| 15 lb | about 56 | 30/20 Chicken, 30/20 Beef, 25/11 Lamb, 24/14 Puppy |
| 16 lb | about 60 | PRO Series 31/25 |
| 20 lb | about 75 | 24/14 Puppy |
| 30 lb | about 112 | 30/20 Chicken, 25/11 Lamb, 24/14 Puppy |
| 32 lb | about 120 | PRO Series 31/25 |
| 40 lb | about 150 | 30/20 Chicken, 30/20 Beef, 24/14 Puppy |
| 48 lb | about 180 | PRO Series 31/25 |
| 60 lb | about 225 | 30/20 Chicken, 25/11 Lamb |
| 80 lb | about 300 | 30/20 Chicken |
Estimates. Bag sizes from shop.bullymax.com, October 2026. Cups per pound vary a little by formula and batch.
How Long a Bag of Dog Food Lasts
Divide the cups in the bag by the cups your dog eats per day. The daily cups come from calories: a typical neutered adult needs about 1.6 × its resting energy requirement (RER = 70 × kg0.75), and you divide that by the calories per cup on the bag. Here is what that looks like on Bully Max 30/20 Chicken at 535 calories per cup for three dog sizes:
| Dog | Calories per day (est.) | 30/20 Chicken per day (est.) | 15 lb bag | 30 lb bag | 40 lb bag | 80 lb bag |
|---|---|---|---|---|---|---|
| 30 lb adult | about 795 | about 1½ cups | about 5½ weeks | about 11 weeks | about 14 weeks | about 29 weeks |
| 50 lb adult | about 1,165 | about 2¼ cups | about 3½ weeks | about 7½ weeks | about 10 weeks | about 20 weeks |
| 80 lb adult | about 1,655 | about 3 cups | about 2½ weeks | about 5 weeks | about 7 weeks | about 14 weeks |
Estimates for a typical adult at normal activity, 3¾ cups per pound. Intact, working and sport dogs eat more; easy gainers less. The printed 30/20 chart lists 2 to 2½ cups for 36 to 50 lb and 2½ to 3⅓ cups for 51 to 75 lb.
A calorie-dense food changes this math in your favor. A 50 lb dog on a 350-calorie kibble needs about 3⅓ cups a day and goes through a 30 lb bag in about 5 weeks; on 30/20 at 535 calories it needs about 2¼ cups and the same 30 lb bag lasts about 7½ weeks. The bag weighs the same; it feeds the dog for 50% longer. That is the whole argument in why Bully Max costs less. For your own dog's number, use the dog food calculator or read how much to feed a 60 lb dog.
535 CALORIES PER CUP MEANS FEWER CUPS PER BAG
30% protein, 20% fat and 535 calories per cup, so a 50 lb dog eats about 2¼ cups a day and a 30 lb bag lasts about 7½ weeks (estimate). Includes TruMune to support digestion.
Save 10% with autoship and set the delivery to land a few days before the bag runs out.
Pick a Bag You Will Finish in 4 to 6 Weeks
Bigger bags cost less per pound, but kibble starts losing flavor and the fats start going stale once the bag is open and exposed to air. The best bag is the one your dog finishes in about 4 to 6 weeks, kept zipped shut in its original resealable bag between meals, in a cool, dry spot. Using the table above: a 30 lb dog does well on the 15 lb bag, a 50 lb dog on the 30 lb, and an 80 lb dog or a two-dog house on the 40 lb. If you buy bigger for the price, keep the sealed bag inside a bin rather than pouring the food loose into it. Our guide on how to store dog food covers freshness and shelf life.
Cups Per Day for Other Bully Max Foods
The same 50 lb typical adult (about 1,165 calories a day) on each formula, and how long the main bag lasts:
| Food | Calories per cup | Cups per day (est.) | Main bag | Lasts (est.) |
|---|---|---|---|---|
| 30/20 Chicken | 535 | about 2¼ | 15 lb (56 cups) | about 3½ weeks |
| 30/20 Beef | 530 | about 2¼ | 15 lb (56 cups) | about 3½ weeks |
| PRO Series 31/25 | 600 | about 2 | 16 lb (60 cups) | about 4½ weeks |
| 25/11 Lamb | 415 | about 2¾ | 15 lb (56 cups) | about 3 weeks |
Estimates at 1.6 × RER and 3¾ cups per pound. Puppies on 24/14 Puppy (419 calories per cup) eat by the growth chart, which changes every few weeks as they grow.
In our customers' words
“I tried out a month supply to see how my dog would take to it and he loves the food definitely more active and healthy”
Bully Max customer, post-purchase survey
“Better results for her and keeping weight on her”
Bully Max customer, post-purchase survey
Why Scoops Are the Problem, Not Cups
The feeding chart says cups. The thing in the bag is usually a scoop, and scoops range from under a cup to nearly two. The most common feeding mistake is not a bad chart; it is a scoop nobody has measured. Measure your scoop once with a proper measuring cup, mark the line, and feed level. If your dog is gaining or losing weight on the chart amount, check the scoop before you change the food. Then adjust by about 10% every two weeks until the ribs are easy to feel under a thin cover of fat. Our guide to how much to feed your dog covers the body-condition checks.
FAQ
How many cups are in a pound of dry dog food?
About 4. Kibble weighs roughly 3½ to 4½ ounces per 8-ounce cup, so a pound is 3½ to 4½ cups. Weigh one cup of your food and divide 16 by the ounces for the exact number.
How many cups are in a 15 lb bag of dog food?
About 56 cups at 3¾ cups per pound, or about 60 at 4 cups per pound. A 50 lb adult on Bully Max 30/20 eats about 2¼ cups a day, so a 15 lb bag lasts about 3½ weeks.
How many cups are in a 30 lb bag of dog food?
About 112 to 120 cups. For a 50 lb adult on a 535-calorie food that is about 7½ weeks; on a 350-calorie food, about 5 weeks.
How many cups are in a 40 lb bag of dog food?
About 150 to 160 cups. An 80 lb adult on Bully Max 30/20 eats about 3 cups a day, so a 40 lb bag lasts about 7 weeks.
How long does a bag of dog food last?
Cups in the bag divided by cups per day. A 50 lb dog on Bully Max 30/20 goes through a 15 lb bag in about 3½ weeks, a 30 lb bag in about 7½ weeks and a 40 lb bag in about 10 weeks. Aim to finish any open bag within about 6 weeks for freshness.
How much does a cup of dog food weigh?
About 3½ to 4½ ounces (100 to 130 grams) for most dry foods. Dense, small kibble is heavier per cup; large, airy kibble is lighter.
Count Cups, Not Pounds
A bag's weight tells you what you carried in from the car. Cups per day, set by calories per cup, tell you what it costs to feed your dog and how often to reorder. Bully Max 30/20 puts 535 calories in every cup, so each bag feeds for longer than its weight suggests. See the side-by-side on calories, cups and days per bag against 11 other foods at Bully Max vs other brands, and the dog food comparison chart.
Fewer cups a day, more days per bag
535 calories per cup from meat-based nutrition, so a 50 lb dog needs about 2¼ cups a day. Set autoship to match your bag and never run out.
535 CALORIES PER CUP MEANS FEWER CUPS PER BAG
30% protein, 20% fat and 535 calories per cup, so a 50 lb dog eats about 2¼ cups a day and a 30 lb bag lasts about 7½ weeks (estimate). Includes TruMune to support digestion.
Save 10% with autoship and set the delivery to land a few days before the bag runs out.
Family-owned since 2009 · Made in USA · Every batch triple tested · Zero recalls · 50,000+ 5-star reviews · Dog Food Advisor 5/5
Sources
- Merck Veterinary Manual, Nutritional Requirements of Small Animals: RER = 70 × (kg)^0.75; MER 1.6 × RER for a neutered adult. merckvetmanual.com
- WSAVA Global Nutrition Committee, Interpreting Food Labels: pet food calorie statements are given per kilogram and per household measure (cup). wsava.org
- Bully Max product pages (30/20 Chicken, 30/20 Beef, PRO Series 31/25, 25/11 Lamb, 24/14 Puppy): bag sizes, calories per 8 oz cup and feeding charts, checked October 2026. Cups per pound (3¾) is the working estimate used across shop.bullymax.com.
- Bully Max post-purchase survey, Dec 2024 to Jun 2025 (customer quotes).
