Dog & Cat Food Calculator
Estimate daily calories and food portions from the calorie value on your pet food label, then plan meals and dry-feeder capacity.
Tell us about your pet
Results update automatically. Use the calorie content printed on the exact food package.
13.6 kg
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Food label details
Look for “Calorie Content” on the exact bag, can, tray, or pouch. Values vary between recipes.
Only needed if you want grams shown alongside cups.
Enter the calorie value from the food label to calculate a food portion.
Household summary
How the estimate works
Resting energy requirement (RER) = 70 × body weight in kg0.75. We multiply RER by the selected life-stage factor from the Merck Veterinary Manual, then divide by the calorie value from your food label.
Use it as a starting point
Individual needs vary. Recheck body condition and weight regularly. Package directions and veterinary advice take priority, especially for puppies, kittens, pregnancy, illness, prescription diets, or weight management. See the AAHA nutrition guidelines.
Food calories
Formulas can change. Check your current package label and edit the calories below if they differ.
How to turn the estimate into a practical feeding plan
The calculator gives you a starting estimate, not a fixed prescription. Energy needs vary between pets of the same weight because age, activity, body condition, neuter status, environment, and health all matter. Start with the calculated amount, compare it with the current feeding guide on your food package, and watch your pet’s weight and body condition over time.
For the most useful result, enter the calorie value from the exact food you use. Look for “Calorie Content” or “Metabolizable Energy” on the package. Dry food is commonly listed as kcal per cup, while wet food may be listed per can, tray, pouch, or kilogram. If the units do not match the calculator, use the manufacturer’s feeding guide or ask your veterinarian rather than guessing a conversion.
Dry food and feeder capacity
For dry food, the result estimates both the daily volume and the hopper capacity needed for your selected refill period. Leave some free space in the hopper instead of filling it to the lid. Kibble shape and size can change how consistently a feeder dispenses, so check the first several meals and compare the delivered portion with a kitchen scale.
If dependable scheduling is the priority, start with our timed cat feeder guide or timed dog feeder guide.
Wet food needs a different setup
The calorie estimate can still help with wet food, but a dry-food hopper is not suitable for cans, trays, or fresh meals. Choose a feeder designed specifically for wet food and follow its refrigeration, ice-pack, room-temperature holding, and cleaning instructions. Do not use the refill-capacity estimate as permission to leave wet food unattended for several days.
See the dedicated cat wet-food feeders and dog wet-food feeders guides.
Check portions after setup
Automatic feeders usually dispense portions by motor rotations or manufacturer-defined units, not by a perfectly standardized cup. Weigh several test portions before relying on a schedule. Recheck after changing kibble because a different shape or density may produce a different amount even when the feeder setting stays the same.
When the calculator is not enough
Veterinary guidance should take priority for puppies and kittens, pregnancy or nursing, significant weight change, diabetes, kidney disease, digestive illness, recovery from surgery, or prescription diets. The same applies when a pet is losing or gaining weight unexpectedly. The calculator does not diagnose a condition or replace an individualized nutrition plan.
Pet food calculator FAQ
Why is the result different from the amount on the food package?
Package guides cover broad weight ranges and use the calorie density of that specific recipe. BowlScout calculates an energy-based starting point from the details you enter. Treat both as reference points, then adjust gradually using weight and body-condition trends.
Should treats be included in the daily calories?
Yes. Treats, training rewards, table food, dental chews, and food dispensed by enrichment devices all contribute calories. If treats are frequent, account for them when planning the main meals rather than adding them on top without adjustment.
How often should I update the calculation?
Recalculate after a meaningful weight change, a new life stage, a change in activity, or switching to food with a different calorie density. Even without a major change, periodically weighing your pet and checking body condition is more useful than relying indefinitely on one old result.
Can two pets share one automatic feeder?
They can, but shared access makes individual intake difficult to verify. In multi-pet homes, separate feeding stations or controlled-access feeders may be more reliable when pets have different calorie needs or steal food from each other.
What feeder size should I choose?
Use the capacity result as a minimum estimate for dry food, then allow extra room and verify the manufacturer’s usable capacity. Also consider kibble size, bowl capacity, backup power, cleaning access, and whether the feeder can reliably dispense your chosen food. You can filter these features in our automatic feeder comparison.
Sources
2 links cited on this page
- Merck Veterinary Manual · merckvetmanual.com
- AAHA nutrition guidelines · aaha.org