Calcvers
Cat Calorie Calculator
Pet Health
Generated
September 24, 2026
Daily energy needs
346kcal/day
216 kcal RER × 1.6
Your inputs
- Weight
- 4.5 kg
- Life stage
- Neutered adult
Breakdown
- RER
- 216 kcal
- Per meal
- 173 kcal
- Per kg
- 77 kcal
Energy budget
| Item | Value |
|---|---|
| RER | 216 kcal |
| Activity | 130 kcal |
| Daily total | 346 kcal |
What this means
A cat's daily calories begin with its resting energy requirement — about 70 × weight(kg)^0.75 — multiplied by life stage. Neutered adults run ≈1.6×, intact adults 1.8×, kittens roughly 2.5×, and pregnant/lactating queens around 2×. At 4.5 kg this cat lands near 346 kcal a day.
Recommendations
- Split the daily total across two meals — cats are nibblers and this suits their stomach.
- Kittens need a growth formula and more kcal per kg; lactating queens need extra until kittens wean.
- Weight loss in cats must be gradual and vet-guided — rapid loss risks hepatic lipidosis.
Watch out
- Cats are prone to overfeeding and obesity; the kcal/kg need actually falls as weight rises.
- RER multipliers are averages — real needs vary by metabolism and environment.