FurCalcs › Dog Calculators

Dog Calculators

Twelve free tools for dog owners, every one built on a published veterinary formula — not the folklore version.

Dog Age CalculatorConvert dog years to human years, adjusted for breed size.Puppy Weight CalculatorEstimate your puppy's adult weight from its age and current weight.Dog Calorie CalculatorDaily calories your dog needs, using the veterinary RER/MER formula.Dog Food CalculatorTurn calorie needs into cups of food per day, from your bag's kcal/cup.Chocolate Toxicity CalculatorMy dog ate chocolate — how serious is it? Check the risk level now.Dog Ideal Weight CalculatorBody condition score to target weight, plus safe weight-loss calories.Dog Healthy Weight QuizIs my dog overweight? Five hands-on checks, 60 seconds, instant estimate.Raw Dog Food CalculatorDaily BARF portions with the 80/10/10 breakdown, by body weight.Dog Water Intake CalculatorHow much water your dog should drink every day.Dog Walking Calorie CalculatorCalories your dog actually burns on a walk.Dog Pregnancy CalculatorDue date and week-by-week milestones from the mating date.Dog Heat Cycle CalculatorPredict the next heat and the fertile window.Dog Crate Size CalculatorMeasure your dog, get the right standard crate size.Toxic Food Checker for DogsCan my dog eat that? Instant answer with your dog's weight factored in.Dog Exercise CalculatorDaily exercise minutes by breed, age and energy level.Puppy Vaccination Schedule GeneratorEnter the birthday, get dated AAHA vaccine windows — printable.Dog Food Cost CalculatorWhat feeding your dog costs per day and month, from the bag label.

Which dog calculator do I need?

Everyday questions usually start with age and food. Theage calculator converts dog years to human years with size-adjusted math, and the calorie calculator plus the food calculator turn the veterinary RER/MER formula into a number of cups per day for your specific dog and your specific bag of food.

Worried about weight? Start with theideal weight calculator — score your dog's body condition at home, get a target weight and a safe calorie plan. Thewalking calculator shows what exercise actually burns (less than most owners hope, which is why the food bowl matters more).

In an emergency — your dog just ate chocolate — go straight to thechocolate toxicity calculator. It uses the Merck Veterinary Manual's methylxanthine thresholds to tell you whether you're looking at an upset stomach or an emergency vet run.

Breeders and new puppy owners get the rest: predicted adult size from thepuppy weight calculator, due dates and whelping milestones from the pregnancy calculator, cycle timing from the heat cycle calculator, and the right crate dimensions from the crate size calculator.

Every tool explains its formula and cites its sources — AKC, AVMA, AAHA, the Merck Veterinary Manual — so you can check our math. None of it replaces your veterinarian; all of it makes you a better-informed client when you get there.