Hill's Science Diet Feeding Chart: How Much to Feed Your Dog

By the PawMathCalc Team · Updated October 26, 2026

Short answer: a 50 lb spayed or neutered adult dog needs about 1,164 kcal a day, which is about 3.2 cups of Hill's Science Diet Adult Original (365 kcal per cup). Across the 54 Hill's Science Diet dry foods below, calories range from 243 to 418 kcal per cup, so the right amount can differ by 72% between two bags of the same brand.

How much Hill's Science Diet to feed: cups per day by weight

The table shows the daily amount for a healthy spayed or neutered adult dog at an ideal weight, for 10 lb, 30 lb, 50 lb, 70 lb. Split it into meals. Puppy foods show a dash: growing animals need 2 to 3 times more per pound, so use the calculator below with the right life stage.

Food	kcal per cup	kcal per kg	10 lb	30 lb	50 lb	70 lb
Adult 7 No Corn Wheat Soy	381	3,635	0.91	2.1	3.1	3.9
Adult 7 Senior Vitality Chicken Rice	359	3,619	0.97	2.2	3.2	4.2
Adult 7 Senior Vitality Small Paws Chicken Rice	341	3,649	1.0	2.3	3.4	4.4
Adult Grain Free	407	3,776	0.86	1.9	2.9	3.7
Adult Healthy Mobility Large Breed	361	3,635	0.96	2.2	3.2	4.1
Adult Healthy Mobility Small Bites	361	3,635	0.96	2.2	3.2	4.1
Adult Lamb Rice	369	3,719	0.94	2.2	3.2	4.1
Adult Lamb Rice Large Breed	369	3,721	0.94	2.2	3.2	4.1
Adult Lamb Rice Small Bites	369	3,721	0.94	2.2	3.2	4.1
Adult Lamb Rice Small Bites Health Guard Skin Small Bites	369	3,721	0.94	2.2	3.2	4.1
Adult Large Breed	365	3,675	0.95	2.2	3.2	4.1
Adult Large Breed No Corn Wheat Soy	390	3,718	0.89	2.0	3.0	3.8
Adult Light	243	2,961	1.4	3.3	4.8	6.2
Adult Light Large Breed	243	2,961	1.4	3.3	4.8	6.2
Adult Light Small Bites	243	2,961	1.4	3.3	4.8	6.2
Adult Light Small Paws Breed	243	2,961	1.4	3.3	4.8	6.2
Adult No Corn Wheat Soy	390	3,718	0.89	2.0	3.0	3.8
Adult Oral Care	272	3,426	1.3	2.9	4.3	5.5
Adult Original	365	3,675	0.95	2.2	3.2	4.1
Adult Perfect Digestion Chicken Rice Oats	368	3,607	0.95	2.2	3.2	4.1
Adult Perfect Digestion Large Breed	368	3,607	0.95	2.2	3.2	4.1
Adult Perfect Digestion Salmon Oats Rice	341	3,647	1.0	2.3	3.4	4.4
Adult Perfect Digestion Small Mini Chicken Brown Rice	347	3,709	1.0	2.3	3.4	4.3
Adult Perfect Weight	298	3,189	1.2	2.7	3.9	5.0
Adult Perfect Weight Joint Support	327	3,204	1.1	2.4	3.6	4.6
Adult Perfect Weight Joint Support Large Breed	300	3,204	1.2	2.6	3.9	5.0
Adult Perfect Weight Large Breed	289	3,189	1.2	2.7	4.0	5.2
Adult Perfect Weight Small Bites	316	3,189	1.1	2.5	3.7	4.7
Adult Perfect Weight Small Paws	298	3,189	1.2	2.7	3.9	5.0
Adult Salmon Brown Rice	358	3,612	0.97	2.2	3.3	4.2
Adult Sensitive Stomach Skin	393	3,747	0.89	2.0	3.0	3.8
Adult Sensitive Stomach Skin Chicken	391	3,732	0.89	2.0	3.0	3.8
Adult Sensitive Stomach Skin Large Breed	393	3,747	0.89	2.0	3.0	3.8
Adult Sensitive Stomach Skin Pollock Insect	385	3,774	0.9	2.1	3.0	3.9
Adult Sensitive Stomach Skin Salmon	400	3,813	0.87	2.0	2.9	3.7
Adult Sensitive Stomach Skin Small Bites	393	3,747	0.89	2.0	3.0	3.8
Adult Sensitive Stomach Skin Small Mini Chicken	380	3,728	0.92	2.1	3.1	3.9
Adult Small Bites	365	3,683	0.95	2.2	3.2	4.1
Adult Small Bites No Corn Wheat Soy	389	3,713	0.89	2.0	3.0	3.9
Adult Small Paws Breed	357	3,699	0.98	2.2	3.3	4.2
Adult Small Paws Lamb Rice	372	3,647	0.94	2.1	3.1	4.0
Mature Adult	352	3,550	0.99	2.3	3.3	4.3
Mature Adult 7 Perfect Digestion	362	3,546	0.96	2.2	3.2	4.1
Mature Adult 7 Perfect Digestion Small Bites	352	3,545	0.99	2.3	3.3	4.3
Mature Adult Large Breed	352	3,550	0.99	2.3	3.3	4.3
Mature Adult Small Bites	352	3,550	0.99	2.3	3.3	4.3
Mature Adult Small Paws Breed	359	3,619	0.97	2.2	3.2	4.2
Oral Adult Oral Care Small Mini	276	3,472	1.3	2.9	4.2	5.4
Senior 11 Small Paws	378	3,807	0.92	2.1	3.1	4.0
Puppy Lamb Meal Rice	381	3,734	-	-	-	-
Puppy Large Breed	387	3,591	-	-	-	-
Puppy Original	390	3,721	-	-	-	-
Puppy Sensitive Stomach Skin Salmon Brown Rice	405	3,857	-	-	-	-
Puppy Small Paws Breed	418	3,780	-	-	-	-

Why the bag's chart may say something else

Feeding charts on bags are written for an average dog and often assume more activity than a typical indoor pet gets. Use the table as a starting point, weigh your dog every 2 to 4 weeks, and change the amount by about 10% if the weight moves. Intact, very active or working dogs need more; dogs that gain weight easily need less.

Calories per cup in this range

	kcal per cup
Median of 54 foods	365
Lowest: Hill's Science Diet Adult Light Small Bites	243
Highest: Hill's Science Diet Puppy Small Paws Breed	418

Switching between two foods of the same brand can change calories a lot. Always recalculate the cups when you change food, and mix the new food in over 7 to 10 days.

Your own dog's weight, age and activity are in the calculator below: pick the food in the "find your food" box and it fills in the calories. All brands side by side: dog food calories per cup chart.

Sources: calorie content (metabolizable energy, as fed) copied from each manufacturer's own product page on October 26, 2026; each food name links to its page. Cups per day: RER = 70 × (kg)^0.75, × 1.6 for a spayed or neutered adult dog or × 1.2 for a spayed or neutered adult cat (WSAVA style energy factors). Formulas change: check the bag you buy.

Try the dog food calculator

Enter your own numbers below, or open the full dog food calculator with the formula and more examples.

This guide is general information, not veterinary advice. Your pet may differ: ask your vet. Terms

Frequently asked questions

How many cups of Hill's Science Diet Adult Original should I feed my dog?

For a spayed or neutered adult at an ideal weight: about 0.95 cups a day at 10 lb, about 2.2 cups a day at 30 lb, about 3.2 cups a day at 50 lb, about 4.1 cups a day at 70 lb. Adjust by weight changes.

How many calories are in a cup of Hill's Science Diet?

Between 243 and 418 kcal per cup across the 54 dry formulas listed, with a median of 365. Check the exact number on your bag.

Why does my dog need less than the bag says?

Bag charts are written for an average dog and often assume more activity. Spayed, neutered and indoor pets usually need less; weigh your dog and adjust.