How Much to Feed a Russian Blue
Russian Blues' naturally lean, muscular build benefits from high-protein diets that support their sleek physique without excess calories. Using the veterinary RER/MER formula, an adult Russian Blue of about 8 lbs needs roughly 221 kcal per day — around 58 g (0.6 cups) of typical dry food. The calculator below is pre-set for the Russian Blue: adjust the weight, life stage and food type to match your cat.
Russian Blue portion calculator
Veterinary RER/MER formula — daily calories, grams and cups.
RER 184 kcal × 1.2 (adult, neutered/spayed) = 221 kcal, at 380 kcal/100g. Estimates for healthy pets — always confirm with your veterinarian.
Cats are obligate carnivores with a metabolism that differs sharply from dogs — their energy multipliers are lower, and an indoor Russian Blue often needs even less than the 221 kcal this calculator estimates. Many cat foods overstate portions on the label. Weigh the daily amount (about 58 g of the selected food) rather than free-pouring, and use a body-condition check monthly: you should feel ribs under a thin fat layer.
A healthy adult weight for the Russian Blue is around 8 lbs (3.6 kg), which yields a resting energy requirement (RER) of 184 kcal. Multiplied by the adult, neutered/spayed factor of 1.2, the daily target is 221 kcal — roughly 110 kcal per meal over 2 meals. Wet food changes the volume dramatically: at ~95 kcal/100g you would serve about 233 g of canned food instead.
These numbers are a starting point, not a prescription. The calculator supports every life stage (kitten, adult, neutered/spayed, adult, intact, senior, weight loss plan) — a kitten can need two to three times the adult allowance, while a senior or a cat on a weight-loss plan needs noticeably less. Recheck the numbers after any change in weight, activity, food brand or neutering status, and always transition between foods gradually over 7–10 days. For medical conditions, pregnancy or lactation, follow your veterinarian's feeding plan instead.
Frequently asked questions
How much food should a Russian Blue eat per day?
A typical adult Russian Blue weighing 8 lbs needs about 221 kcal per day (adult, neutered/spayed), which is roughly 58 grams — about 0.6 cups — of standard dry food, split into 2 meals.
How is the Russian Blue's daily portion calculated?
We use the standard veterinary formula: Resting Energy Requirement (RER) = 70 × (weight in kg)^0.75, then multiply by a life-stage factor. For a 3.6 kg Russian Blue, RER is 184 kcal, and the adult, neutered/spayed factor of 1.2 gives 221 kcal per day.
How many times a day should I feed my Russian Blue?
2 meals per day is the standard recommendation for a adult, neutered/spayed cat — about 110 kcal (29 g of dry food) per meal. Puppies and kittens need 3–4 smaller meals instead.
Should I feed my Russian Blue wet or dry food?
Both can be complete diets; what changes is volume and water intake. The same 221 kcal daily target is about 58 g of dry food but roughly 233 g of wet food. Many owners mix both — just keep the combined calories at the target.