Cat Calorie Calculator: How Many Calories Should Your Cat Eat Per Day?
Use this free cat calorie calculator to estimate your cat’s daily calorie needs using standard veterinary formulas. Enter your cat’s weight, age and activity level to get a personalized daily feeding plan.
- See your cat’s daily calories in kcal per day.
- Get recommended grams of dry, wet or raw food to feed.
- Understand how idade e nível de atividade change calorie needs.
Perfect if you’re managing weight loss, supporting a growing kitten, or just want a science-backed cat food calculator for everyday feeding.
Enter your cat's information and click Calculate!
Select Food Type
Recommended Daily Amount
Split into 2-3 meals per day for best results
Factor Impact
How to Use This Cat Calorie Calculator
This tool uses a standard veterinary formula to estimate your cat’s daily calories and how many grams of food to feed. Here’s how to get the most accurate result:
- Weigh your cat and enter the weight in kilograms.
- Add age and choose months or years. Kittens, adults, and seniors all get slightly different adjustments.
- Select activity level (indoor, outdoor, or high activity) based on how much your cat actually moves around.
- Click “Calculate Now” to see daily calories (kcal/day).
- Choose dry, wet, or raw food to see the grams per day, or use the Advanced section to enter the kcal/100 g printed on your food label.
Behind the scenes, the calculator estimates Resting Energy Requirement
(RER) using the formula
70 × (body weight in kg)0.75 and then multiplies it
by factors for activity and life stage to get total daily calories.
Cat Daily Calorie Chart by Weight
These are approximate daily calories for a typical indoor, neutered adult cat. Your cat’s ideal number may be a bit higher or lower, so use this as a starting point and adjust with your vet’s guidance.
| Cat weight | Approx. kcal / day |
|---|---|
| 2 kg (4.4 lb) | ≈ 140 kcal |
| 3 kg (6.6 lb) | ≈ 190 kcal |
| 4 kg (8.8 lb) | ≈ 240 kcal |
| 5 kg (11.0 lb) | ≈ 280 kcal |
| 6 kg (13.2 lb) | ≈ 320 kcal |
| 7 kg (15.4 lb) | ≈ 360 kcal |
| 8 kg (17.6 lb) | ≈ 400 kcal |
| 9 kg (19.8 lb) | ≈ 435 kcal |
| 10 kg (22.0 lb) | ≈ 470 kcal |
Many healthy adult cats fall roughly in the range of about 20–33 calories per pound, with indoor cats at the lower end and very active outdoor cats at the higher end.
Calories for Kittens, Adults & Senior Cats
Calorie needs change with age and health. That’s why the calculator gently adjusts the final number for kittens and senior cats.
- Kittens (under 12 months) – often need much more energy per kilogram because they are growing. In practice, many kittens eat closer to 2–3 × their RER.
- Adults (around 1–7 years) – usually maintain their weight on a moderate amount of calories. Indoor, neutered cats often need fewer calories than intact or very active outdoor cats.
- Gatos idosos – may become less active and need fewer calories, but some seniors with muscle loss or illness may need mais. This is where your veterinarian’s advice is essential.
Should I use current weight or ideal weight?
For healthy cats staying the same size, you can usually calculate based on their current weight. For weight loss or weight gain plans, many vets prefer to calculate from the ideal body weight instead of the current number on the scale. Always talk to your vet before making big changes.
What if my cat is overweight or has a medical condition?
This calculator is designed for otherwise healthy cats. Diseases like diabetes, kidney disease, hyperthyroidism, or certain medications can change calorie needs dramatically. If your cat has a medical condition, use this tool as a rough reference only and follow your veterinarian’s specific feeding plan.
How do I use the result in real life?
After you calculate calories and grams per day:
- Check the kcal/100 g or kcal per can on your food label.
- Use the calculator’s gram value as your daily total.
- Split that amount into 2–3 meals per day.
- Monitor your cat’s weight and body shape every few weeks and adjust slightly up or down as needed.
If you are ever unsure, your vet team can help you fine-tune the number for your cat’s unique situation.
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