Pick a calculator
Dog calorie calculator
How many kcal your dog needs per day, from the veterinary RER formula and life stage.
Dog food portion & cost
Grams or cups per day from the label's kcal, plus days per bag and monthly cost.
Dog age in human years
Size-adjusted conversion, plus the 2020 epigenetic-clock formula for comparison.
Puppy weight predictor
Estimate adult size from your puppy's current age and weight, by breed size class.
Dog water intake
A daily hydration target in ml and cups, adjusted for heat and activity.
Dog pregnancy due date
Expected whelping date and week-by-week milestones from the mating date.
Why KibbleMath
Metric-first, label-friendly. Most dog calculators assume cups and pounds. Ours work in grams, kilograms and kcal per 100 g — the way food is actually labelled in Europe — with imperial units one tap away.
The working is shown. Every tool states the formula it uses and where it comes from, so you can sanity-check the result instead of trusting a black box.
No signup, no nonsense. Everything runs in your browser. Results are starting points to discuss with your vet — not a replacement for one.