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How much should you
actually feed them?
Estimate daily food portions using your pet’s weight and body condition. Pets of the same weight can need different amounts of food.
For dogs and cats aged 4 months and older.
From the food label to the bowl
Enter weight and life stage
Choose kg or lb. Then adjust body condition and activity if needed.
Check the food label
Use kcal/kg from the packaging. Without it, the result uses an average food energy density.
Use the result as a starting point
See daily grams and a two-meal split. Treat calories are deducted from the food allowance.
Why calories and grams are different
An arithmetic example, not a feeding recommendation: a daily budget of 400 kcal includes 40 kcal of treats. The food contains 3,600 kcal/kg, or 3.6 kcal/g.
- Daily energy
- 400 kcal
- Treat energy
- 40 kcal
- Energy left for food
- 360 kcal
- Food per day
- 100 g
(400 − 40) ÷ 3.6 = 100 g per day. Split into two equal meals: 50 g each. These example numbers are not tailored to your pet.
Help with the next step
After calculating
Weigh the portion rather than estimating by eye. Keep a weight record and use the safe weight-management guide to understand when the plan needs review.
Guides →Common feeding questions
Why is this different from the feeding guide on the bag?
The package and this calculator may use different assumptions about activity, body condition and calorie needs. Both provide starting estimates. Check the food calories and treats entered here, then adjust with weight and body-condition monitoring. Follow an individual feeding plan from your veterinarian if you have one.
Can I calculate a portion without knowing the food calories?
You can start with the default food calories, but the amount in grams is only a rough estimate. For a product-specific conversion, enter the calorie content from its label. If the label is unclear, ask the manufacturer; do not enter kcal per cup as kcal per kilogram.
When should I ask a veterinarian instead?
This general calculator is for dogs and cats aged four months and older. For younger animals, pregnancy, nursing, illness or a prescribed diet, ask your veterinarian for an individual feeding plan. Unexplained weight changes or loss of appetite need veterinary advice rather than a calculator adjustment.
Sources, method and limitations
The calculators show their formulas and references. Guides link to veterinary sources and distinguish sourced advice from editorial interpretation. This site is independently maintained; its content has not been reviewed by a veterinarian. Report unclear wording or errors through the contact page.