Pet Vaccination Schedule Calculator
Generate a recommended vaccination schedule for your dog or cat based on their age, weight, and vaccination history.
Your vaccination schedule will appear here.
Formulas & Logic
Age Conversion:
- Age in weeks = Age (months) × 4.345
- Age in weeks = Age (years) × 52.18
Vaccine Timing (Dogs — AAHA Guidelines):
- DA2PP Series: Doses at 8, 12, and 16 weeks of age
- DA2PP Booster: 1 year after puppy series, then every 3 years
- Rabies: First dose at 12–16 weeks; booster at 1 year; then every 1–3 years (per local law)
- Bordetella: From 8 weeks; booster every 6–12 months (lifestyle-dependent)
- Leptospirosis / Lyme / Canine Influenza: From 12 weeks; 2-dose series; annual booster (high-risk only)
Vaccine Timing (Cats — AAFP Guidelines):
- FVRCP Series: Doses at 8, 12, and 16 weeks of age
- FVRCP Booster: 1 year after kitten series, then every 3 years
- Rabies: First dose at 12 weeks; booster at 1 year; then per local law
- FeLV: From 8 weeks; 2-dose series; annual booster (outdoor/mixed cats)
Next Due Date: Next Due (weeks) = Booster Interval − Weeks Since Last Vaccination
Overdue Threshold: If Next Due ≤ 0, vaccine is overdue and should be scheduled immediately.
Assumptions & References
- Dog core vaccine schedule follows AAHA Canine Vaccination Guidelines (2022).
- Cat core vaccine schedule follows AAFP Feline Vaccination Guidelines (2020).
- 1 month is approximated as 4.345 weeks; 1 year as 52.18 weeks.
- Rabies booster intervals may vary by jurisdiction and vaccine type (1-year vs. 3-year product).
- Non-core vaccines (Bordetella, Leptospirosis, Lyme, FeLV, FIV, Canine Influenza) are recommended based on lifestyle risk level.
- Maternal antibody interference is assumed to diminish by 6–8 weeks of age.
- Weight is used for breed-size advisory notes only; vaccine doses are not weight-adjusted in standard protocols.
- This tool is for educational purposes only. Always consult a licensed veterinarian for your pet's specific health needs.
- References: AAHA 2022 Canine Vaccination Guidelines; AAFP 2020 Feline Vaccination Guidelines; AVMA Vaccination FAQs.