13 free calculators
Dog calculators
Age in human years and life expectancy, puppy growth and feeding, daily calories, raw food and water, ideal weight, heat cycles, pregnancy week by week, crate size and yearly costs. Each calculator shows its formula, worked examples and the sources behind it.
- Dog age in human yearsTwo methods side by side: the size-based chart and the 16·ln(age)+31 epigenetic formula.
- Dog food and caloriesDaily calories from weight and life stage, then cups per day from your food's kcal per cup.
- Dog water intakeTypical daily water by weight, and the level at which drinking is considered excessive.
- Dog pregnancy due dateDue date window from the breeding date, LH surge or start of diestrus.
- Dog ideal weight (BCS)Rough ideal weight from current weight and the 9-point body condition score.
- Yearly cost of a dogYearly and first-year cost, starting from ASPCA estimates you can change.
- How long do dogs live?Average life expectancy by adult size (US) and median lifespan for 143 breeds (UK).
- Puppy weight calculatorEstimated adult weight from age and weight today, on published breed growth curves.
- How much to feed a puppyCalories, cups and meals per day for a growing puppy, from weight and age.
- Dog heat cycle calculatorNext heat window and average stage dates from the start of her last heat.
- Dog crate sizeCrate interior size from your dog's length and height, for home or air travel.
- Raw dog food calculatorDaily amount of a raw food from your dog's calorie needs and the label, plus safety facts.
- Dog pregnancy week by weekDated milestones from breeding to whelping: tests, X-rays, due window, labor.
All results are educational estimates based on published averages. For your own pet, your veterinarian has the final word.