How Much Wet Food Should a Kitten Eat?

Wet food suits a lot of kittens. It is soft for small mouths, easy to eat during weaning and appealing to fussy eaters. But it is also easy to get the amount wrong, because a can looks small and a kitten acts hungry all the time. This guide works out how much wet food a kitten should eat from its weight, turns the grams into cans and pouches, shows how to combine wet with dry and covers serving and storage.

Kitten calories, then grams

Kittens need about 2.5 times the resting energy requirement. For a kitten weighing 1.5 kg that is 2.5 × 70 × 1.5 ^ 0.75 ≈ 237 kcal a day. The step from calories to wet food is a division:

grams of wet food = daily calories ÷ (kcal per kg ÷ 1,000)

For a 1,000 kcal/kg food, 1 kcal is 1 g, so the grams equal the calories. The Kitten Food Calculator takes your kitten’s weight and age in weeks and the energy of your food.

Wet food by weight and can size

If your wet food has fewer than 1,000 kcal per kg, increase the grams: a food of 800 kcal/kg needs 25% more (237 ÷ 0.8 = 296 g for the 1.5 kg kitten). If it has more, reduce. For the full chart with dry food and treat limits, see the kitten feeding chart.

Reading the can

Wet food labels may give any of these:

• kcal per can or pouch (common in North America): cans per day = daily calories ÷ kcal per can.
• kcal per 100 g or per kg (common in the UK and Australia): grams per day = daily calories ÷ (kcal per kg ÷ 1,000).
• kJ or MJ: divide kJ by 4.184 to get kcal.

For example, a kitten needing 237 kcal on a food with 70 kcal per 85 g can needs 237 ÷ 70 ≈ 3.4 cans. The Cat Food Cans per Day Calculator does the conversion for any can size, and the Cat Food Cost Calculator turns the calories and prices into cost per day.

A worked example

A kitten weighs 1.5 kg and eats a wet kitten food that comes in 85 g cans with 85 kcal each.

1. Daily calories: 237 kcal.
2. Cans: 237 ÷ 85 ≈ 2.8 cans a day, about 237 g.
3. Four meals: 0.7 can each, or about 59 g.
4. Cost check: if a can costs 0.90, the daily cost is about 2.50.
5. Weigh weekly and recalculate as the kitten grows.

The weekly update matters. A kitten that grows from 1.5 kg to 2 kg needs about 57 kcal more a day, or about 0.7 of a can.

Mixing wet and dry

Many owners feed wet food for some meals and dry for others, or offer both together. Calculate by calories:

Do not give a full wet portion plus a full dry portion, which doubles the calories. Pick a share and keep to it.

Weaning onto wet food

Kittens under four weeks old drink milk or a milk replacer and need a plan from your vet. Weaning is gradual and usually starts when the kittens show interest in the mother’s food. Offer a soft, moistened kitten food in a shallow dish, let the kitten explore and keep milk or other nutrition available as your vet advises. Do not rush, and weigh each kitten to be sure all are gaining. If kittens were born at home, our guide to how long cats are pregnant explains the timeline before the birth.

Serving and storage

• Serve at room temperature. Cold food straight from the fridge can put kittens off; a short stand on the counter helps.
• Use clean bowls. Wash daily.
• Discard leftovers. Wet food that has been out for a while should be thrown away.
• Store opened cans covered in the fridge, and use them within the time the maker states.
• Keep fresh water available.

Wet food and teeth, cost and convenience

Wet food is more expensive per calorie than most dry foods, which is a practical point if you are buying for several kittens. Some owners use a mix to balance cost and convenience, and some use dry food as a snack in puzzle feeders. Teeth and gums are a vet’s concern at routine checks, not something a feeding choice alone settles. Whichever you choose, make sure the food is labelled complete and balanced for growth, and ask your vet at the first visit.

Checking the amount

After two weeks, look at your kitten:

1. Is weight rising steadily?
2. Can you feel the ribs under a light layer of padding?
3. Is the coat shiny, the stool firm and the kitten playful?
4. Does it finish meals without begging constantly?

If the kitten is thin or too heavy, speak to your vet before making large changes.

Common mistakes

• Feeding “a can” without checking its calories.
• Giving a full wet portion plus a full dry portion.
• Leaving wet food out for hours.
• Forgetting to recalculate as the kitten grows.
• Feeding cold food and assuming the kitten is not hungry.
• Switching brands too often.

A week of wet kitten meals

A sample plan for a 1.5 kg kitten needing 237 kcal on a wet food of 1,000 kcal per kg, in four meals:

Each meal is a little more than half a pouch of 100 g. As the kitten grows, the amounts rise: at 2 kg the day’s total is 294 g, which is about 74 g per meal. Weighing once a week tells you when to move the numbers.

Weaning with wet food

Weaning is gradual, and wet food is often the first solid food. A typical approach is:

1. Offer a thin paste of wet kitten food mixed with a little warm water or kitten milk replacer in a shallow dish.
2. Let the kittens lick it, and allow them to play, since it takes time to learn.
3. Thicken the mixture over a few days.
4. Offer small meals several times a day while they continue to nurse or take milk replacer, as your vet advises.
5. Weigh each kitten every day or two at this stage.

If any kitten is not gaining, tell your vet straight away. Weaning is a period when weak kittens can fall behind, and they need quick attention.

Moving from wet kitten food to adult food

Your vet will advise when to move to adult food, often around a year, depending on the kitten. When you do:

• Mix a little adult food into the kitten food and raise the share over seven to ten days.
• Recalculate the calories: the kitten factor of 2.5 falls to 1.2 for a neutered adult, so the daily amount per kilogram falls a lot. A 4 kg adult needs 238 kcal, against 495 kcal as a hypothetical 4 kg kitten.
• Weigh monthly, since many cats gain weight after neutering.

Sample day for a 2 kg kitten

A 2 kg kitten needs about 295 kcal (2.5 × 118). On a wet food of 1.0 kcal/g, that is 295 g across the day.

If you add dry food, subtract its calories from the wet total. For example, 20 g of a 3.8 kcal/g dry food gives 76 kcal, leaving 219 kcal, or 219 g of wet food. Warm food to room temperature if it was in the fridge, and discard what is left after the time on the label. Update the amounts every week as the kitten grows.

Signs the amount is right

A kitten fed the right amount is playful between meals, gains weight steadily week to week, has a rounded but not heavy belly and ribs you can feel under a thin layer of padding. If the kitten leaves food regularly, check the amount against its weight, because kittens can eat to their need. If it gains too fast or too slowly, speak to your vet.

Quick summary

1. Kitten calories = 2.5 × 70 × weight in kg ^ 0.75; wet food grams = calories ÷ kcal per gram.
2. A 1.5 kg kitten needs about 237 kcal: about 237 g of a 1,000 kcal/kg wet food, or 2.8 cans of 85 kcal.
3. Mix by calorie share, not by giving full portions of both.
4. Feed 3 to 4 meals, serve at room temperature and discard leftovers.
5. Weigh weekly and recalculate.
6. Use the Kitten Food Calculator and the cans calculator.

Frequently asked questions

Sources

1. NRC (2006) Nutrient Requirements of Dogs and Cats, National Academies Press
2. Merck Veterinary Manual — Nutritional Requirements of Small Animals
3. WSAVA Global Nutrition Guidelines

Related calculators

• Kitten Food CalculatorFind out how many calories a growing kitten needs and how much food that is.
• Cat Food Cans per Day CalculatorFind out how many cans of wet food your cat needs each day, week and month.
• Cat Food Cost CalculatorSee what it costs per day, month and year to feed your cat, from its calorie need and the price of the bag.

Keep reading

• Kitten Feeding Chart by Weight and AgeA kitten feeding chart by weight: daily calories at 2.5 times RER, grams of dry and wet food, cans per day, treat limits and a weekly weigh-in log.
• How Much Should a Kitten Eat? By AgeHow much to feed a kitten by weight and age: the 2.5 times RER rule, grams of wet and dry food, meals per day, weaning and when to switch to adult food.
• How Much Wet Food Should a Cat Eat a Day?How much wet food a cat needs a day: grams and cans by weight, how kcal per can works, mixing wet with dry and how to avoid overfeeding with pouches and tins.
• When to Switch From Kitten Food to Adult Cat FoodWhen to move a kitten to adult food: the AAFP/AAHA life stages, the calorie drop from 2.5 to 1.2 times resting energy, a worked example in grams and a 7-day plan.