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Pets Calculator
Dog Food Calculator
Estimate your dog’s daily calories, food amount per day, food per meal, treat calorie limit and RER/MER values from weight, activity level and food calorie density.
Use current weight for maintenance or vet target weight for weight plans.
The RER formula uses kilograms internally.
Choose the closest starting point.
Calories per cup, can, pouch or 100 g.
Match the unit on the food label.
Used to divide the daily amount.
Common planning limit for treats.
Use only if your vet or weigh-ins suggest a change.
Shown in the result summary.
This is a starting estimate. Track body condition, body weight and stool quality, then adjust with your veterinarian if needed.
How the dog food estimate works
The calculator first converts weight to kilograms and calculates RER: 70 x kg^0.75. It then multiplies RER by the selected life-stage/activity factor and subtracts the treat allowance from the main food amount.
- Use the calories printed on the exact food package.
- Use an ideal target weight if your veterinarian recommends weight loss.
- Recheck every 2 to 4 weeks and adjust gradually.
Dog feeding tips
- Keep treats, dental chews and table scraps inside the daily calorie budget.
- For puppies, senior dogs, pregnant dogs or medical conditions, ask your veterinarian for a plan.
- If changing food, transition over several days unless your vet gives different instructions.
Dog calorie multiplier guide
| Dog situation | Starting multiplier | Notes |
|---|---|---|
| Weight loss plan | 1.0 x RER | Use veterinary target weight and monitor closely. |
| Neutered low-activity adult | 1.4 x RER | Common for indoor or less active dogs. |
| Typical adult maintenance | 1.6 x RER | Starting estimate for many adult dogs. |
| Active adult | 2.0 x RER | May fit very active or working dogs. |
| Puppy under 4 months | 3.0 x RER | Growth needs vary by breed and size. |
Sources and safety notes
The RER formula is described by the Merck Veterinary Manual. Nutrition assessment and body condition monitoring are also emphasized by the WSAVA Global Nutrition Guidelines.
Dog Food Calculator FAQ
How many calories should my dog eat per day?
This calculator starts with RER, or resting energy requirement, then applies an activity and life-stage multiplier. It is a planning estimate, not a veterinary prescription.
What formula does the Dog Food Calculator use?
It uses the common RER formula: 70 x body weight in kilograms to the 0.75 power. The daily calorie target is then adjusted by a selected multiplier.
Should I include treats in my dog’s calories?
Yes. Treats should usually stay around 10% of total daily calories unless your veterinarian gives different guidance.
What if my dog is overweight or underweight?
Ask your veterinarian for an ideal target weight and feeding plan. For weight changes, small adjustments and regular weigh-ins are safer than sudden food changes.