Calcvers
Pet Food Calculator
Pet Care
Generated
September 24, 2026
Food per day
303 g
≈ 1059 kcal/day
Your inputs
- Pet
- Dog
- Weight
- 20 kg
- Activity level
- Moderate
- Food energy density
- 350 kcal/100g
Breakdown
- Per serving
- 303 g
- Per week
- 2118 g
- Per month
- 9079 g
How the amount breaks down
| Item | Value |
|---|---|
| Weight | 20 kg |
| Daily kcal | 1059 kcal |
| Daily food | 303 g |
What this means
Food amounts start from the pet's resting energy needs (RER ≈ 70 × weight^0.75), multiplied by an activity factor to get daily calories. Converting calories to grams needs the food's energy density from the label — this calculator defaults to a typical 350 kcal per 100 g. The result is a starting portion to adjust by the pet's body condition, not a rigid prescription.
Recommendations
- Start with the calculated portion and weigh weekly — adjust up or down by 10% based on body condition.
- Treats count toward daily calories; keep them to under 10% of the day's total.
- Re-calculate after any weight change — the portion follows the pet's weight.
Watch out
- This is an estimate, not veterinary advice — puppies, kittens, seniors and pregnant pets have different needs.
- Food density varies hugely between brands; the label figure matters more than the default.