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Hill's Science Diet Perfect Weight Cat

Manufacturer: Hill's Science Diet

Hill's Science Diet Hill's Science Diet Perfect Weight Cat Chicken Recipe
84.4Technical Score

The Hill's Science Diet Perfect Weight Cat (Hill's Science Diet) earned a technical score of 84.4/100 (rated ⭐ High Standard) under the independent My Pet Magazine methodology, which combines the IDNM nutrient density index (76 pts) and the IPFI ingredient purity index (92 pts). On a dry-matter basis, this food for cats delivers 39.4% protein and 11.9% fat. The analysis is computed by algorithm, with no payment or interference from brands.

Is Hill's Science Diet Perfect Weight Cat good?

Yes, it is a good option. Hill's Science Diet Perfect Weight Cat is in the "High Standard" band of our review, with a technical score of 84.4/100. The score combines nutritional density (IDNM 76) and ingredient purity (IPFI 92), with 39.4% protein and 11.9% fat on a dry-matter basis. At 3412 kcal/kg, FEDIAF maintenance needs work out to 56–74 g per day for an adult cat weighing 4 kg (full table below).

Nutritional Analysis

IDNM (Nutrient Density)76 / 100
IPFI (Ingredient Purity)92 / 100
Final Score84.4

Dry-Matter Composition

Protein39.4%
Fat11.9%
Carbohydrates35.39%
Ash7.3%

Composition and Energy

Values as declared in the manufacturer guaranteed analysis (as-fed basis — as printed on the bag).

Nutritional composition of Hill's Science Diet Perfect Weight Cat (metabolizable energy when available in the dataset)
NutrientValue
Crude protein36.25 %
Crude fat10.95 %
Crude fiber5.52 %
Ash (mineral matter)6.72 %
Moisture8 %
Metabolizable energy3412 kcal/kg

How much to feed per day

Estimated daily serving (g/day) based on the metabolizable energy of this food (3412 kcal/kg) and the maintenance energy requirement (MER) of an adult cat per FEDIAF 2024, from the lowest value (low-activity dog; neutered or indoor cat) to the moderate one (moderately active dog; active cat). It is a starting point: adjust to your pet's body condition and your veterinarian's advice. The calculation ignores age, neutering (in dogs) and individual clinical conditions.

Recommended daily serving in grams per day of Hill's Science Diet Perfect Weight Cat by the weight of the cat
Weight of the catEnergy requirementRecommended serving
3 kg157–209 kcal/day46–61 g/day
4 kg190–253 kcal/day56–74 g/day
5 kg220–294 kcal/day65–86 g/day
6 kg249–332 kcal/day73–97 g/day

Formula: maintenance energy (kcal/day) = coefficient × weight(kg)^exponent. Dogs: coefficient 95 (low activity) to 110 (moderate activity), exponent 0.75 (FEDIAF 2024, Table VII-7, p. 55). Cats: coefficient 75 (neutered or indoor) to 100 (active), exponent 0.67 (FEDIAF 2024, Table VII-9, p. 57). Portion (g/day) = energy requirement ÷ (food kcal/kg ÷ 1000). Source: FEDIAF, Nutritional Guidelines for Complete and Complementary Pet Food for Cats and Dogs, July 2024.

Ingredients

  1. 1Chicken
  2. 2Brewers Rice
  3. 3Corn Protein Meal
  4. 4Wheat Gluten
  5. 5Oat Fiber
  6. 6Chicken Meal
  7. 7Dried Tomato Pomace
  8. 8Dried Beet Pulp
  9. 9Flaxseed
  10. 10Chicken Fat

What we like

  • ✓taurine declared
  • ✓EPA/DHA declared
  • ✓L-carnitine
  • ✓fresh meat first ingredient
🥇
Feeding TrialsAAFCO feeding trial declared: +6 pts (Gold level)
⚡ Estimated data

www.hillspet.com (average dry-matter content converted to as-fed using the label's max. moisture) — verified 2026-08-30

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Frequently asked questions about Hill's Science Diet Perfect Weight Cat

What is the technical score of Hill's Science Diet Perfect Weight Cat?
Hill's Science Diet Perfect Weight Cat (Hill's Science Diet) scores 84.4/100 under the My Pet Magazine methodology — a weighted average of the IDNM nutrient density index (76 points) and the IPFI ingredient purity index (92 points), by the formula (IDNM × 0.55) + (IPFI × 0.45). The analysis is 100% algorithmic, with no interference from brands.
How much protein does Hill's Science Diet Perfect Weight Cat have?
On a dry-matter basis (removing the effect of moisture), Hill's Science Diet Perfect Weight Cat has 39.4% protein, 11.9% fat and 35.39% carbohydrates. Converting to a dry-matter basis allows a fair comparison between foods for cats with different moisture levels.
Is Hill's Science Diet Perfect Weight Cat a good food for cats?
Under the My Pet Magazine classification, Hill's Science Diet Perfect Weight Cat is "High Standard" (score 84.4/100). Strengths: taurine declared, EPA/DHA declared, L-carnitine. Talk to a veterinarian before changing the diet of your cat.

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