Both calculators estimate a dog's daily calories. They differ in what you enter, whether the formula is shown and what you get besides calories. Facts below come from the visible pages.
Disclosure: CalcuPaw makes one of the calculators compared here. We only state what is visible on each page on the date above. Pages change; if something is out of date, tell us and we will correct it.
Side by side
| Feature | CalcuPaw | Omni Calculator (Dog Calorie Calculator) |
|---|---|---|
| Inputs | Weight and life stage or activity (neutered, intact, inactive, weight loss, working, puppy under or over 4 months) | Weight and one of four activity levels; optional food energy, package size and days |
| Formula shown | Yes: RER = 70 × kg^0.75 times a listed factor (NRC, Merck) | The page says it uses an algorithm by a named nutrition expert and does not list the factors or the equation |
| Neutered dogs | Own factor (1.6) | Not an input |
| Puppies | Factors 3.0 (under 4 months) and 2.0 (4 months to adult) | No puppy-specific calculation |
| Weight loss | Weight-loss factor on the goal weight | No weight-loss mode; advises seeing a vet |
| Food amount and bag duration | In companion calculators (Dog Food, Bag Duration) | In the same calculator, from calories per 100 g and package size |
| Sources on the page | NRC (2006), Merck Veterinary Manual, linked | No citation for the method visible; mentions obesity statistics and body-condition charts |
When Omni Calculator may suit you better
- You want calories, grams and bag duration in one form.
- You prefer choosing an activity level from 'under 1 hour' to 'work or high-intensity' for a working dog.
When CalcuPaw may suit you better
- You want to see the formula and factors and check them against NRC or Merck.
- Your dog is a puppy, neutered or on a weight-loss plan.
Frequently asked questions
Why might two calorie calculators give different numbers?
They may use different life-stage factors or activity bands. A calculator that shows its factors lets you see why.
Can I trust any calculator exactly?
No. Every result is an estimate within roughly 10 to 20%. Weigh your dog monthly and adjust by about 10%, and ask your vet.
Source for the other tool
Omni Calculator (Dog Calorie Calculator), read 19 Oct 2026.