What is the technical score of Hill's Science Diet Adult Light?

Hill's Science Diet Adult Light (Hill's Science Diet) scores 64.9/100 under the My Pet Magazine methodology — a weighted average of the IDNM nutrient density index (29 points) and the IPFI ingredient purity index (96 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 Adult Light have?

On a dry-matter basis (removing the effect of moisture), Hill's Science Diet Adult Light has 34.44% protein and 6.67% fat. Converting to a dry-matter basis allows a fair comparison between foods for cats with different moisture levels.

Is Hill's Science Diet Adult Light a good food for cats?

Under the My Pet Magazine classification, Hill's Science Diet Adult Light is "Solid" (score 64.9/100). Strengths: fresh meat first ingredient, natural preservatives, taurine declared. Points of concern: corn and wheat present, corn and wheat gluten. Talk to a veterinarian before changing the diet of your cat.

Hill's Science Diet Adult Light

Name: Hill's Science Diet Adult Light
Brand: Hill's Science Diet

Manufacturer: Hill's Science Diet

64.9Technical Score

The Hill's Science Diet Adult Light (Hill's Science Diet) earned a technical score of 64.9/100 (rated ✅ Solid) under the independent My Pet Magazine methodology, which combines the IDNM nutrient density index (29 pts) and the IPFI ingredient purity index (96 pts). On a dry-matter basis, this food for cats delivers 34.44% protein and 6.67% fat. The analysis is computed by algorithm, with no payment or interference from brands.

Is Hill's Science Diet Adult Light good?

So-so. Hill's Science Diet Adult Light is in the "Solid" band (technical score 64.9/100), below our High Standard band. Compare it with the alternatives on this page. The score combines nutritional density (IDNM 29) and ingredient purity (IPFI 96), with 34.44% protein and 6.67% fat on a dry-matter basis. At 3171 kcal/kg, FEDIAF maintenance needs work out to 60–80 g per day for an adult cat weighing 4 kg (full table below).

Nutritional Analysis

IDNM (Nutrient Density)29 / 100

IPFI (Ingredient Purity)96 / 100

Final Score64.9

Dry-Matter Composition

Protein34.44%

Fat6.67%

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 Adult Light (metabolizable energy when available in the dataset)
Nutrient	Value
Crude protein	31 %
Crude fat	6 %
Crude fiber	9 %
Moisture	10 %
Metabolizable energy	3171 kcal/kg

How much to feed per day

Estimated daily serving (g/day) based on the metabolizable energy of this food (3171 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 Adult Light by the weight of the cat
Weight of the cat	Energy requirement	Recommended serving
3 kg	157–209 kcal/day	49–66 g/day
4 kg	190–253 kcal/day	60–80 g/day
5 kg	220–294 kcal/day	70–93 g/day
6 kg	249–332 kcal/day	79–105 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

1Chicken
2Corn Gluten Meal
3Whole Grain Wheat
4Brewers Rice
5Powdered Cellulose
6Wheat Gluten
7Chicken Fat
8Chicken Liver Flavor
9Calcium Sulfate
10Lactic Acid

What we like

✓fresh meat first ingredient
✓natural preservatives
✓taurine declared
✓L-carnitine
✓fruits and vegetables
✓low calorie

Points of concern

⚠corn and wheat present
⚠corn and wheat gluten

🥇

Feeding TrialsAAFCO feeding trial declared: +6 pts (Gold level)

✓ Verified data

www.petsmart.com — guaranteed analysis and ingredient list mirrored from the Hill's label, read 2026-09-03 · corroborated by petsense.com and piscespets.com (same figures) · replaces a dry-matter conversion that overstated protein and understated fiber

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Frequently asked questions about Hill's Science Diet Adult Light

What is the technical score of Hill's Science Diet Adult Light?: Hill's Science Diet Adult Light (Hill's Science Diet) scores 64.9/100 under the My Pet Magazine methodology — a weighted average of the IDNM nutrient density index (29 points) and the IPFI ingredient purity index (96 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 Adult Light have?: On a dry-matter basis (removing the effect of moisture), Hill's Science Diet Adult Light has 34.44% protein and 6.67% fat. Converting to a dry-matter basis allows a fair comparison between foods for cats with different moisture levels.
Is Hill's Science Diet Adult Light a good food for cats?: Under the My Pet Magazine classification, Hill's Science Diet Adult Light is "Solid" (score 64.9/100). Strengths: fresh meat first ingredient, natural preservatives, taurine declared. Points of concern: corn and wheat present, corn and wheat gluten. Talk to a veterinarian before changing the diet of your cat.

Keep comparing

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Foods for cats with the same profile (adult · weight control), from highest to lowest score.

Purina Pro Plan Weight Management · score 83.9/100
Purina ONE +Plus Ideal Weight · score 77.4/100
Purina Cat Chow Naturals Indoor Hairball · score 73.3/100
Blue Buffalo Tastefuls Weight Control · score 70.3/100

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