🐕 Dog Health Calculators
Science-based tools for dog owners. From calories to vaccines — everything in one place.
Most Used Dog Tools
⚠️ Toxic Food & Plant Checker
⭐ Most PopularThe #1 most searched tool by dog owners. Instantly check food and plant safety for dogs — from grapes to onions to lilies.
200+ Foods · Severity Levels · Vet Hotline Included
All Dog Tools
About These Dog Health Calculators
Our dog tools are built on peer-reviewed veterinary standards from AAHA, AAFCO, and WSAVA. Here's what each tool does — and why it matters for your dog's health.
▶What is the most accurate dog age calculator?
Our dog age calculator uses the AAHA 2023 life stage guidelines, which account for breed size differences. Small dogs age slower than large dogs — a 5-year-old Chihuahua is roughly 36 human years, while a 5-year-old Great Dane is about 48. Try the age calculator →
▶How do I calculate my dog's daily calorie needs?
Our calorie calculator uses the AAFCO Maintenance Energy Requirement (MER) formula: RER × activity multiplier. RER = 70 × (weight in kg)^0.75. The multiplier adjusts for neuter status, activity level, and life stage. Calculate calories →
▶Which vaccinations does my dog need?
Core vaccines (required for all dogs) include rabies, DHPP (distemper, hepatitis, parvovirus, parainfluenza). Non-core vaccines like Bordetella and Leptospirosis depend on your region and lifestyle. Our schedule follows WSAVA 2024 guidelines. View vaccine schedule →
▶How long are dogs pregnant?
Dogs are pregnant for approximately 63 days (9 weeks) from ovulation. Our gestation calculator shows the expected due date range and key developmental milestones from implantation through whelping. Check due dates →