Free Dog Calculators
Quick, accurate tools for everyday dog care math. No sign-up, no fluff — just answers.
Puppy Weight Calculator
Predict your puppy's adult weight based on current weight and age. Adjusted by breed size.
Dog Age Calculator
Convert your dog's age to human years using the 2019 epigenetic formula and traditional method.
Dog Calorie Calculator
Estimate daily calorie needs based on weight, activity level, and life stage.
Dog Crate Size Calculator
Find the right crate size from your dog's body length and shoulder height.
Dog Water Intake Calculator
Calculate how much water your dog should drink daily based on body weight.
About These Calculators
Every formula comes from published veterinary or scientific sources (AKC, WSAVA, AAHA, peer-reviewed papers). We show the formula on each page so you can verify it yourself. These tools give estimates, not diagnoses—always consult your vet for health decisions.