What this calculator does
The Cat Wet Food Calculator tells you how many cans of wet food to feed your cat each day. It divides your cat's daily energy requirement (in kilocalories) by the calorie content of a single can. This makes portioning simple and helps prevent both underfeeding and the slow weight gain that comes from guessing.
How to use it
Enter two numbers. First, your cat's daily calorie needs in kcal/day — this is the amount of energy a vet or feeding guide recommends for your cat's weight and activity. Second, the calories per can, printed on the label as a "metabolizable energy" or kcal/can figure. The calculator returns cans per day, cans per week, and how long a single can lasts.
The formula explained
The core equation is simply $$\text{Cans per day} = \frac{\text{Daily Calories (kcal/day)}}{\text{Calories per Can (kcal/can)}}$$ Weekly cans are the daily figure times seven, and "days one can lasts" is the reciprocal of cans per day. Because cans are split across meals, fractional results are normal — feed in portions rather than rounding to whole cans.
Worked example
Suppose your cat needs 250 kcal/day and each can supplies 95 kcal. Then $$250 \div 95 \approx 2.63 \text{ cans per day}$$ about \(18.42\) cans per week, and a single can lasts roughly \(0.38\) days. You would split that into several small meals throughout the day.
FAQ
How do I find my cat's daily calorie needs? A common estimate is the resting energy requirement times an activity factor; ask your vet for a target tailored to weight, age and neuter status.
Where do I find kcal per can? Look on the product label or the manufacturer's website for the metabolizable energy value, usually given per can or per 100 g.
Should I round to whole cans? No — feed the fractional amount across meals. Always adjust based on your cat's body condition and your vet's advice.
