Cat Food Portion Calculator
Updated
Quick answer
How much wet food should I feed my cat?
A typical 10-pound neutered indoor cat needs about 260 kcal a day: roughly one and a half 5.5-oz cans of wet food, or two-thirds of a cup of dry, or a mix of both. The right amount scales with weight and life stage; the calculator above splits it into cans and cups using your food's actual calories.
| Cat | 8 lb | 10 lb | 12 lb |
|---|---|---|---|
| Wet only (5.5-oz cans) | 1.2 | 1.5 | 1.7 |
| Dry only (cups) | 0.55 | 0.65 | 0.75 |
How much to feed a cat
Portions come from calories, and calories come from two numbers: your cat's resting energy requirement (70 × weight in kg^0.75) and a life-stage multiplier1. A neutered adult runs at 1.2 × resting needs, an intact adult at 1.4, an indoor couch connoisseur at 1.0, and kittens at 2 to 3 times. Divide the result by the calories in your food and the cans and cups fall out.
One honest caveat from the veterinary source itself: individual cats vary from these estimates by as much as 50%1. Treat the number as a starting point, watch body condition over a few weeks, and adjust. For a deeper calorie breakdown, the cat calorie calculator shows the same math with every life stage.
Cat feeding chart: portions by weight
Neutered adults, assuming 180 kcal per 5.5-oz can and 400 kcal per cup of dry. Your labels may differ; the calculator takes exact numbers.
| Weight | kcal/day | Wet only (cans) | Dry only (cups) |
|---|---|---|---|
| 6 lb (2.7 kg) | 178 | 1.0 | 0.44 |
| 8 lb (3.6 kg) | 221 | 1.2 | 0.55 |
| 10 lb (4.5 kg) | 261 | 1.5 | 0.65 |
| 12 lb (5.4 kg) | 299 | 1.7 | 0.75 |
| 15 lb (6.8 kg) | 354 | 2.0 | 0.88 |
Wet, dry, or a mix?
Nutritionally, complete-and-balanced foods work in any form; the real differences are water and calorie density. Wet food is about 75% water, which helps cats who drink little, while dry is calorie-dense, so portion errors cost more. A popular middle path: one can a day for the hydration, dry for the rest. Pick "Mix of both" in the calculator and it fills the remaining calories with dry automatically.
How often to feed
Two meals a day suits most adult cats: split the daily total roughly in half, morning and evening. Kittens under 6 months eat three to four smaller meals. Keep the schedule steady; cats negotiate loudest when the routine wobbles.
How it works
The bowl question is really two questions: how many calories does your cat need, and how many calories are in your food. We answer the first with the standard veterinary formulas and the second straight from your label, then divide. Everything below is just those two steps with the working shown.
The calorie target uses the standard veterinary formulas13: RER = 70 × (weight in kg)^0.75, then MER = RER × a life-stage factor (neutered 1.2, intact 1.4, inactive 1.0, kittens 2 to 3, pregnancy 2 to 3, nursing 2 to 6).
The portions divide that target by your food's labeled calories: kcal per can for wet, kcal ME/cup for dry. Mixed mode fixes the cans you choose and fills the remainder with dry.
Professional tools like the Pet Nutrition Alliance calculator2 use the same method; we add the can-and-cup translation and show every step.
Frequently asked questions
How much wet food should a cat eat a day?
A typical 10-pound neutered indoor cat needs about 260 kcal a day, which is roughly one and a half 5.5-oz cans at 180 kcal per can. Check your can's label: calories range from about 150 to 200 per 5.5-oz can, and the calculator takes the exact number.
How much dry food should a cat eat a day?
About two-thirds of a cup for a typical 10-pound neutered cat, assuming 400 kcal per cup. Kibble density varies a lot, so read "kcal ME/cup" on your bag and measure level with a real dry-measure cup.
How often should I feed my cat?
Twice a day works well for most adult cats; split the daily total into morning and evening. Kittens under 6 months do better with three or four smaller meals. What matters most is the daily calorie total, and meals beat free-feeding for keeping it honest.
Is free feeding okay?
It works for some cats and quietly overfeeds many others, because kibble sitting out all day invites grazing past the calorie budget. If your cat is gaining weight on free feeding, switch to measured meals; the portion above is the day's total.
How much wet food should a kitten eat?
Kittens need far more per pound than adults: under 4 months, about 3 times resting needs, and 2 times from 4 to 12 months. Pick the kitten life stage in the calculator and it applies the right multiplier to the current weight.
What time should I feed my cat?
Cats love routine more than any particular clock time. Pick two times you can hit every day, morning and evening, and keep them steady; begging usually tracks habit rather than hunger.
References
- 1.Pet Nutrition Alliance. Calculating Calories Based on Pet Needs (RER/MER factor table). petnutritionalliance.org
- 2.Pet Nutrition Alliance. Calorie Calculator for Cats and Dogs. petnutritionalliance.org
- 3.WSAVA Global Nutrition Committee. Global Nutrition Guidelines. wsava.org
