Calculate cat portion by weight

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Cat Portion Calculator: How Many Grams Per Day Per Weight?

Founder Prime AnimalZ · 26 January 2026 · 5 min read

Quick answer

An adult cat eats 40–60 grams of dry food per day per 4 kg of body weight. Kittens need relatively more, older cats slightly less. Most packaging underestimates the portion: use your cat's weight as the starting point, not the recommendation on the bag.

✓ 4 kg cat: 50–60 grams of dry food per day
✓ 6 kg cat: 70–85 grams of dry food per day
✓ Wet food: 1.5 × the weight in grams per day (85 g for a 4 kg cat)
✓ Kitten: 1.5–2 × the portion of an adult cat of the same weight

De meeste katteneigenaren vullen de bak "op gevoel" bij. Begrijpelijk, maar het leidt tot twee problemen: te weinig eten (ondergewicht, traagheid) of te veel eten (overgewicht, gewrichtsklachten). Katten zijn kleine dieren met een nauwkeurig voedingsritme. Een portieverschil van 10 gram per dag heeft over een jaar een merkbaar effect op hun gewicht.

The good news: the calculation is simple if you know your cat's weight. Use the table below as a starting point and adjust based on activity level and condition.

Dry food portion table by weight and age

These are guidelines based on the average energy content of dry food (approximately 350–380 kcal per 100 g). Always check the label of your brand: higher calorie density means a smaller portion.

Cat weight	Kitten (<12 months)	Adult (1–7 yrs)	Senior (7+ yrs)
2 kg	45–55 g	25–35 g	20–30 g
3 kg	60–75 g	35–45 g	30–40 g
4 kg	75–95 g	50–60 g	40–50 g
5 kg	90–115 g	60–75 g	50–62 g
6 kg	105–130 g	70–85 g	58–72 g
7 kg	—	80–98 g	66–82 g
8 kg	—	90–110 g	74–90 g

Neutered cats: After neutering, metabolism drops by 20–30%. Reduce the portion after neutering by 15–20% and monitor weight monthly.

Wet food portion table (tin or pouch)

Wet food contains 70–80% moisture and is less calorically concentrated than dry food.

Cat weight	Wet food only (g/day)	Combined dry + wet food
3 kg	120–150 g	20 g dry + 80 g wet food
4 kg	150–190 g	25 g dry + 100 g wet food
5 kg	185–230 g	30 g dry + 120 g wet food
6 kg	220–270 g	35 g dry + 145 g wet food

How many meals per day?

Kitten (up to 6 months): 3–4 meals per day
Young adult (6–12 months): 3 meals per day
Adult cat: 2–3 meals per day
Senior cat: 2–3 smaller meals

Automatic portioning: why it works better

Handmatig afwegen werkt prima als je er de discipline voor hebt. Maar de meeste eigenaren schenken "op het oog" in, en dat oog is consistent te royaal. Een automatische voerbak programmeert je eenmalig de gewenste portie en geeft altijd exact hetzelfde.

Precise portioning

Automatic Feeder 6L

Adjustable per gram · 6L reservoir · HD camera · App schedule

View product

Frequently asked questions

How many grams of dry food does a 4 kg cat eat per day?

An adult cat weighing 4 kg eats an average of 50 to 60 grams of dry food per day, split across 2 to 3 meals.

My cat always asks for more food – is it not getting enough?

Cats are opportunistic eaters and ask for food even when full. If the weight is stable and the cat is active and alert, the portion is likely correct.

How much can an overweight cat eat per day?

Reduce the daily portion by 15 to 20% compared to the target portion for ideal weight. Aim for a weight loss of no more than 1 to 2% per week.

Do I need to calculate wet and dry food separately?

Yes. If you feed a combination, calculate how many calories you're giving from dry food and subtract that from the total daily requirement.