Hill's Science Diet5.5 oz
19 cans compared
Hill's Science Diet vs Purina ONE
The typical Purina ONE can gets 5.6% of its calories from carbohydrate, against 21.1% for Hill's Science Diet. Hill's Science Diet has 2 of 11 recipes under the 10% low-carb line; Purina ONE has 5 of 8. Below, every number is worked out the same way from each can’s label.
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Hill's Science Diet vs Purina ONE at a glance
Typical values are the middle recipe of each brand. Shares are of calories, so textures compare fairly. Marked cells show the better value where the gap is meaningful.
| Hill's Science Diet | Purina ONE | |
|---|---|---|
| Cans we compare | 11 | 8 |
| Typical carbs, % of calories | 21.1% | 5.6% |
| Carb range | 3.9–35% | 3.9–13.6% |
| Recipes under 10% carbs | 2 of 11 | 5 of 8 |
| Typical protein, % of calories | 43% | 45% |
| Typical fat, % of calories | 37% | 50% |
| Calories per ounce | 30 | 31 |
| Calories per can | 72–212 | 70–105 |
| Recipes with published phosphorus | 0 of 11 | 0 of 8 |
| Typical phosphorus, mg per 100 kcal | — | — |
| Confirmed for kittens | 3 of 11 | 7 of 8 |
| Chicken-free recipes | 0 of 11 | 0 of 8 |
| Fish-free recipes | 2 of 11 | 0 of 8 |
| Textures | Pâté, Chunks in gravy | Pâté, Flaked |
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Lowest-carb can from each brand
The recipe with the smallest share of calories from carbohydrate on each side, leaving out toppers meant for supplemental feeding.
Put these two side by sidePurina ONE3 oz
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Same texture, head to head
For each texture both brands make, the lowest-carb recipe from each.
| Texture | Hill's Science Diet | Purina ONE |
|---|---|---|
| Pâté | Kitten with Salmon3.9% carbs · 43% protein · 212 kcal | Chicken & Salmon Recipe3.9% carbs · 39% protein · 105 kcal |
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Which to choose, by what your cat needs
For a diabetic or overweight cat
Purina ONE is the lower-carb line overall. Its lowest-carb recipe is Chicken & Salmon Recipe at 3.9% of calories; Hill's Science Diet’s is Kitten with Salmon at 3.9%. Both brands have recipes under the 10% line (5 of 8 against 2 of 11), so the right recipe matters more than the brand.
For kidney concerns
Hill's Science Diet doesn’t publish phosphorus on the pages we checked. Purina ONE doesn’t publish phosphorus on the pages we checked. Without published values neither brand can be checked for phosphorus from the label alone; ask the maker for a typical analysis.
For kittens
Hill's Science Diet has 3 of 11 recipes whose label we could confirm covers growth or all life stages; Purina ONE has 7 of 8. A missing statement doesn’t mean a can is unsuitable, only that we couldn’t verify it.
For allergies and picky eaters
Chicken-free: Hill's Science Diet 0 of 11, Purina ONE 0 of 8. Fish-free: Hill's Science Diet 2 of 11, Purina ONE 0 of 8. Textures: Hill's Science Diet makes pâté, chunks in gravy; Purina ONE makes pâté, flaked.
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Questions about Hill's Science Diet vs Purina ONE
Is Hill's Science Diet or Purina ONE lower in carbs?
The typical Purina ONE can gets 5.6% of its calories from carbohydrate, against 21.1% for Hill's Science Diet. Hill's Science Diet has 2 of 11 recipes under the 10% low-carb line; Purina ONE has 5 of 8.
Which has more protein, Hill's Science Diet or Purina ONE?
Hill's Science Diet. Its typical can gets 43% of calories from protein, against 45% for Purina ONE. Hill's Science Diet has 0 of 11 recipes over 50% protein calories; Purina ONE has 3 of 8.
Which is more filling per ounce?
About the same: 30 calories per ounce for Hill's Science Diet and 31 for Purina ONE.
Do Hill's Science Diet and Purina ONE publish phosphorus?
Hill's Science Diet doesn’t publish phosphorus on the pages we checked. Purina ONE doesn’t publish phosphorus on the pages we checked.
Which is better for a diabetic cat, Hill's Science Diet or Purina ONE?
Carbs are what matter most, and Purina ONE has the lower-carb line with 5 of 8 recipes under 10%. The best single choice is a specific recipe, not a brand: Kitten with Salmon (3.9%) from Hill's Science Diet or Chicken & Salmon Recipe (3.9%) from Purina ONE. Change a diabetic cat’s food only with your vet.
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