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Request CalculatorPets & Animals Calculators
Our pets and animals calculators help breeders, owners, and hobby farmers plan with confidence — from pregnancy due dates and gestation timelines to feeding portions and heat-cycle tracking. Every tool is free, works on any device, and shows the formula behind the result.
Pregnancy & Breeding
Enter a breeding or mating date to get an estimated due date and a stage-by-stage timeline. The dog and cat pregnancy calculators use the correct gestation average and normal window, and the heat cycle calculator predicts fertile days.
Feeding & Care
The dog food and cat calorie calculators use body weight, life stage, and activity level to estimate the right daily portion, so you avoid both under- and over-feeding.
Growth
The puppy size calculator estimates how big your dog will get from its current weight, age, and breed size using standard growth curves.