Puppy & Kitten Vaccination Schedule Calculator
Vaccination charts tell you "6–8 weeks, 10–12 weeks, 14–16 weeks." They don't tell you what that means for a puppy born on a Tuesday in August. Put in the date of birth and this works out the actual windows — including the final dose at 16 weeks or older, which is the one that decides whether the series worked at all.
Not sure? Use your best estimate — a week or two either way is fine.
Age now: 8 weeks
Your schedule
- Due now
DAPP #1 (distemper, adenovirus, parvo, parainfluenza)
- Upcoming
DAPP #2
- Upcoming
DAPP #3 + Rabies (1-year)
This is the dose that decides immunity. It must land at 16 weeks or older — an earlier final shot can be blocked by maternal antibodies.
- Upcoming
DAPP booster + Rabies (1- or 3-year, per state law)
Keep this schedule
Save it to your pet's profile and get a reminder before each due date.
A planning aid based on AAHA and AAFP guidelines — not a substitute for your veterinarian. Local law, your pet's health, and lifestyle risk (boarding, daycare, tick exposure) change what's recommended.
Why the last shot matters more than the first
Puppies and kittens are born with maternal antibodies that protect them and, at the same time, block vaccines from taking hold. Those antibodies fade somewhere between 6 and 16 weeks, and the exact week is different for every animal. That is the whole reason for a series rather than a single shot: you keep vaccinating until you are past the point where maternal antibodies can interfere. A final dose given before 16 weeks can be neutralized without anyone knowing — which is how a fully "vaccinated" puppy still catches parvo.
Related guides
Sources: AAHA 2022 Canine Vaccination Guidelines · AAHA/AAFP Feline Vaccination Guidelines
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