Cat Food Portion Calculator
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Planning estimate only — not veterinary advice. Ask your veterinarian for health decisions. Rough daily food portion from body weight and activity — confirm with your vet and food label.
Rates last reviewed: July 2026
Cat weight & activity
Daily portion
0.35 lb
5.6 oz · 0.9 cups (6 oz)
- Activity level
- moderate
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Daily cat food portions
Indoor cats often need about 3–4% of ideal body weight in food per day depending on activity — lower for couch potatoes, higher for playful or outdoor cats. The percentage converts to ounces or grams before you split across meals.
AAFP feline life-stage guidance stresses maintaining lean body condition rather than a fixed scoop. Free feeding can work for some cats but often leads to weight gain — measured portions are safer for most households.
Example: a 10 lb moderately active cat at 3.5% needs about 0.35 lb (5.6 oz, roughly one 6-oz cup of dry food) per day. A 4.5 kg cat at the same level needs about 158 g.
Official sources
Rates and formulas in this calculator reference the documentation below. Confirm current numbers on the source site before relying on them. Links do not imply endorsement by those organizations of Calcometry or this tool.
Common questions
Should I feed wet or dry food?
Either format works when calories are controlled. Wet food adds hydration; dry is convenient. Enter total daily weight and follow label calorie density for your chosen product.
Do treats count toward the portion?
Yes — treats add calories. Reduce the meal portion or count treats as part of the daily total to avoid weight gain.
What if my cat is overweight?
Ask your vet for a target weight and calorie plan. This calculator uses current weight — ideal weight may be lower for obese cats.