Age-based feeding calculator for kittens 2-12 months. Calculate daily calories, meal frequency, and portions following AAFCO growth nutrition standards.
Kittens grow faster than almost any other companion animal, and their calorie needs per pound are several times an adult's. The Kitten Feeding Calculator maps your kitten's age and current weight to a daily calorie target that tracks the rapid early growth and then tapers as they approach adulthood.
Feed a kitten too little and you risk stunted growth and a weak immune system; feed too much and you raise the odds of obesity and orthopedic problems later. Because kittens change so quickly week to week, the calculator is built around age-based multipliers rather than a single fixed number.
Kittens need about 2.5x RER at 4 weeks of age, falling to roughly 2.0x RER by 6 months and about 1.6x RER near 12 months. RER itself is based on weight (70 x kg^0.75), so as the kitten gains weight the absolute calorie need climbs even as the multiplier drops -- which is why a 6-month-old eats more total calories than a 2-month-old despite a lower multiplier.
AAFCO requires 'growth' (or 'all life stages') food for kittens, with higher protein, fat, calcium, and phosphorus than adult food to support bone and muscle development. Large-breed kittens (Maine Coon, Norwegian Forest Cat) stay in growth longer -- sometimes to 18-24 months -- so they need kitten-formulated food well past the first birthday.
Frequent small meals suit a kitten's tiny stomach. Very young kittens (under 4 months) do best with 3-4 meals a day; by 6-12 months, two meals is fine. Free-choice feeding is sometimes used for young kittens but makes it hard to notice when one stops eating, which is an early sickness signal.
Using the tool takes under a minute. Enter your cat's current weight in pounds (or kilograms, if your page allows), select the relevant life stage, health, or activity options, and press the calculate button. The result shows a daily calorie target plus dry, wet, and mixed-food portions you can measure.
Read the result as a starting point, not gospel. Weigh your cat every 2-4 weeks and nudge portions up or down by about 5-10% if the body condition drifts from ideal. Keep a simple log -- date, weight, cups/cans -- so trends are obvious before they become problems.
The most common error is eyeballing portions instead of measuring. A 'scoop' varies by 30-50% between people, and those calories accumulate into slow weight gain. Use a real measuring cup or kitchen scale, especially for dry food.
A second mistake is treating treats and table scraps as free. They can silently add 10-20% of daily calories; count them toward the budget or switch to tiny training treats. A third is free-feeding dry food without monitoring intake, which makes overfeeding effortless for easy-keeper cats.
Weaning matters: kittens transition from mother's milk or formula to solid food between 3 and 6 weeks. Soaked kibble or wet food eases the change. By 8 weeks most are fully on solid kitten food.
Large and small breeds diverge. A Maine Coon kitten at 6 months may weigh as much as a small adult cat yet still need growth-formula calories, while a petite breed matures earlier. Use the breed size comparison calculator to sanity-check expectations against your kitten's breed.
Your daily calorie number assumes a healthy, stable adult at a lean body condition. Kittens, pregnant or nursing cats, seniors, and overweight cats each get different factors -- that is why we offer a dedicated calculator for each. If your situation spans categories, start with the most specific tool and confirm with your veterinarian.
Adjust in small steps. A 5-10% portion change is enough to move weight gradually; dramatic cuts risk nutrient shortfalls or, in cats, hepatic lipidosis. Track weight monthly and let trends -- not a single weigh-in -- guide tweaks.
Worked example: a 3 lb (1.4 kg) kitten at 12 weeks. RER = 70 x 1.4^0.75 = about 85 kcal. At this age the factor is roughly 2.2x, so MER = about 187 kcal/day, split into 3-4 small meals. If the kitten food is 430 kcal/cup, that is 0.43 cup/day total (about 0.11-0.14 cup per meal). By 6 months, weight may reach 6 lb (2.7 kg), RER climbs to about 135 kcal, but the factor falls to ~2.0x, so MER is about 270 kcal -- more total calories despite a lower multiplier, because the kitten is bigger. At 12 months, factor ~1.6x and the target eases toward adult levels. Track weight weekly on a kitten; steady gain along the growth curve is the goal, not a fixed cup count. A practical tip: keep a simple kitten feeding chart on the fridge with weekly weights and the day's measured portions. If a kitten unexpectedly skips two meals, that is an early warning sign worth a call to the vet -- far more useful than a number on a page. And resist switching foods weekly; pick a growth-formula diet and stay with it through the first year so the gut stays settled and you can trust the calorie math. A second practical case is a large-breed kitten such as a Maine Coon at 16 weeks weighing 5 lb (2.3 kg): RER = 70 x 2.3^0.75 = about 125 kcal, factor ~2.1x, MER = about 262 kcal/day, still on growth food. Because giant breeds stay in growth past 12 months, keep this target on kitten formula until 18-24 months rather than switching at the first birthday like a small breed. When you do transition to adult food, do it over 7-10 days by mixing increasing amounts of the new diet into the old, so the gut adjusts and you avoid loose stools that can derail weight gain. Orphaned kittens need a commercial kitten milk replacer every 2-3 hours and should never be given cow's milk; if you are raising a neonatal kitten, work with a veterinarian or experienced breeder for a precise feeding and stimulation schedule.
A frequent mistake is treating a kitten like a small adult and feeding adult food or adult portions; kittens need growth-formula nutrients and far more calories per pound. Another myth is that constant access to food is always kindest -- free feeding hides appetite loss that signals illness. And assuming all breeds mature at 12 months ignores giant breeds like Maine Coons, which need kitten food into their second year.
Use the calculator for routine portioning, but let your vet lead on medical nutrition. Sudden weight loss or gain, increased thirst or urination, persistent vomiting, appetite swings, or a new diagnosis (kidney disease, diabetes, hyperthyroidism) all warrant a check-up before changing the diet. Therapeutic prescription diets should be started under veterinary guidance.
Select your kitten's age and enter weight to calculate daily calories, meal frequency, and food portions for each growth stage.
An 8-week-old (2-month-old) kitten weighing 2 lbs needs approximately 175-200 kcal per day (RER ≈ 70 kcal × 2.5 growth factor). This equals about 0.5 cups of dry kitten food daily, split into 4 meals. By 4 months (4 lbs), daily needs increase to ~330 kcal (0.94 cups). Always use a kitten-formulated food with AAFCO "growth" statement.
Most cats can transition to adult food at 12 months. Large breeds (Maine Coon, Norwegian Forest) may need kitten food until 18-24 months due to extended growth. Transition gradually over 7-10 days by mixing increasing amounts of adult food with decreasing amounts of kitten food to avoid digestive upset.
Kittens 2-4 months: 4 meals/day. Kittens 4-6 months: 3 meals/day. Kittens 6+ months: 2-3 meals/day. Very young kittens have small stomachs and need frequent small meals to maintain blood sugar. As they grow, stomach capacity increases and meal frequency can decrease. Always provide fresh water alongside meals.
No. Most cats are lactose intolerant after weaning. Cow's milk causes diarrhea, dehydration, and nutrient malabsorption in kittens. If supplementary feeding is needed (orphaned kittens), use a commercial kitten milk replacer (KMR) specifically formulated for feline neonates. Once weaned, kittens only need water.