Pet calculators you can actually trust
Evidence-based tools for everyday dog and cat care. Quick answers — right in your browser.
All calculators
- Most popular
Food Portion Calculator
How much to feed your dog or cat based on weight and activity level.
Calculate → Dog Age Calculator
Convert your dog's or cat's age to the human-year equivalent.
Calculate →Ideal Weight Calculator
Check whether your pet is in their breed's healthy weight range.
Calculate →Water Intake Calculator
Daily water target based on weight, climate, and activity.
Calculate →Treat Calorie Budget
How many treats can your pet have without breaking their diet?
Calculate →Walk Time Calculator
Recommended daily exercise by breed energy level and life stage.
Calculate →Crate Size Finder
Find the right crate dimensions from your pet's measurements.
Calculate →- Vet use
Dose Unit Converter
Convert between mg, mg/mL, and mL for prescribed medications.
Calculate →
Built for pet owners, grounded in science
Veterinary formulas
Every calculator uses published, peer-reviewed formulas — RER for food, epigenetic clocks for age, and breed weight data from veterinary databases.
100% private
All calculations run in your browser. No data is sent to any server, no account required, no tracking of your pet's information.
Instant & free
Pure static pages — no loading spinners, no paywalls. Fast on any device, including mobile.
Results are estimates. Always consult your veterinarian for medical decisions.