Vaccination Schedule Calculator: Track Your Child's Immunizations

Pediatric vaccination schedules are genuinely complex — there are 14+ vaccines in the first two years of life alone, many given in series, some at very specific age windows. The CalcHub Vaccination Schedule Calculator takes your child's birth date and current date, and generates a personalized schedule showing what's been due, what's coming, and when.

The CDC Recommended Schedule: First 2 Years

Age	Vaccines Due
Birth	HepB (dose 1)
1–2 months	HepB (dose 2)
2 months	DTaP, Hib, IPV, PCV15, RV
4 months	DTaP, Hib, IPV, PCV15, RV
6 months	DTaP, Hib, PCV15, RV, Influenza (annual)
6–18 months	HepB (dose 3), IPV (dose 3)
12–15 months	MMR, Varicella, HepA (dose 1), Hib (final), PCV15
15–18 months	DTaP (dose 4)
18–23 months	HepA (dose 2)
12–23 months	Influenza (annual)
4–6 years	DTaP booster, IPV booster, MMR booster, Varicella booster

Vaccine abbreviations: DTaP (diphtheria/tetanus/pertussis), Hib (Haemophilus influenzae type b), IPV (polio), PCV15 (pneumococcal), RV (rotavirus), MMR (measles/mumps/rubella), HepA/HepB (hepatitis A and B).

What the Calculator Does

Enter your child's birthdate and the current date, and the calculator returns:

• Completed vaccines: What should have been received based on age
• Due now: Vaccines due at the current age
• Upcoming in 30/60/90 days: Proactive planning for appointments
• Catch-up needed: If your child has fallen behind on any series

Catch-Up Schedules

Missing a vaccine doesn't mean starting the series over. Most vaccine series can resume where they left off, and the calculator shows the appropriate catch-up timing. The minimum intervals between doses in a series are fixed — you can give doses later than scheduled, but not earlier.

Adolescent and Teen Boosters

The schedule doesn't end at age 6. Key adolescent vaccines:

Age	Vaccines
11–12 years	Tdap booster, HPV series, Meningococcal (MenACWY)
13–18 years (catch-up)	HPV (if not started), Meningococcal booster
16–18 years	MenB (meningococcal B, optional)
Annual	Influenza

HPV vaccination is most effective before any exposure to the virus — which is why the 11–12 age target is so important, before typical sexual activity begins.

Keeping Records

The calculator helps you generate a printable or exportable vaccine log. Keep a copy in:

• Your child's physical medical records


• Your phone's notes/health app


• Their school health file (schools require proof of vaccinations for enrollment)

What if we've traveled internationally and received vaccines abroad?

Vaccines received abroad count toward the schedule as long as they were WHO-approved and administered at the correct minimum age and interval. Bring documentation from the foreign provider to your pediatrician.

Is the vaccine schedule the same in all countries?

No. Some countries use different vaccine combinations, schedules, or timing. The CDC schedule is specific to the United States; WHO has its own recommended schedule. If you're an international family, note which country's schedule you're following.

Can vaccines be given "early" to protect before travel?

Some vaccines can be moved earlier for travel to high-risk areas, but minimum age and interval requirements still apply. Your pediatrician can advise on travel-specific modifications.

Related Calculators

• Baby Growth Percentile Calculator — Track development alongside health checkups
• Feeding Schedule Calculator — Ensure nutrition supports a healthy immune response
• Sleep Schedule Calculator — Sleep supports immune system development