Calculate your puppy's age in human years and get development milestones, care tips, and growth information based on breed size.
25-60 lbs (Beagle, Cocker Spaniel, etc.)
Eyes closed, dependent on mother, limited mobility.
Eyes opening, first teeth, beginning to walk.
Learning social skills, basic training, exploring.
Adult teeth, increased independence, training focus.
Sexual maturity, testing boundaries, adult coat.
Fully mature, settled personality, peak condition.
This free puppy age calculator runs entirely in your browser using standard mathematical formulas. Enter your figures, tap Calculate, and results update instantly — no signup required.
Figures are estimates for general information. Always verify important decisions with a qualified professional where relevant.