School Admission Age Calculator
Every state and school sets its own cutoff date — enter yours and get the exact age, down to the day.
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How the age is calculated
Each block explains one part of how this works and how to read the result.
Exact calendar age, not an estimate
This computes the precise number of complete years, months, and days between the date of birth and the cutoff date you enter — real calendar arithmetic, not a rounded estimate. We don’t assume a state’s cutoff date or minimum age for you; several of those vary by state and change by session, so check your own state or school’s current admission notice for the actual cutoff, then enter it here.
Frequently asked questions
What cutoff date should I use?
Check your state’s current-year nursery/Class 1 admission notice or your target school’s prospectus — cutoff dates are usually 31 March or 31 December depending on the state, and they can change year to year.
Does Knwdle have my state’s exact cutoff already?
For several states, yes — see the state-specific Nursery Admission Age Calculators. This generic tool is for any state, any school, or any cutoff date not covered there.
Why not just show years?
Admission eligibility is usually decided down to the day (e.g. "must be 3 years as on 31 March") — months and days matter for borderline cases.
Can I use this for exam eligibility age too?
Yes — it works for any date-of-birth-vs-cutoff-date calculation, not just school admission.
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For developers & AI agents
The School Admission Age Calculator is also available as a free, unauthenticated JSON API — no API key, no sign-up, CORS enabled for all origins. Send a GET request with the parameters below and receive the computed result as JSON, including the source of the format or formula used. Invalid input returns HTTP 400 with a JSON { "error": "..." } body.
GET https://knwdle.com/api/tools/school-admission-age-calculator| Parameter | Required | Description |
|---|---|---|
dob | Yes | Date of birth, YYYY-MM-DD |
cutoffDate | Yes | Admission cutoff date, YYYY-MM-DD |
Request:
GET https://knwdle.com/api/tools/school-admission-age-calculator?dob=2022-05-14&cutoffDate=2026-03-31
Response:
{
"tool": "school-admission-age-calculator",
"input": {
"dob": "2022-05-14",
"cutoffDate": "2026-03-31"
},
"result": {
"primaryLabel": "Age as of 2026-03-31",
"primaryValue": "3 years, 10 months, 17 days",
"steps": [
"From 2022-05-14 to 2026-03-31",
"= 3 years, 10 months, 17 days"
],
"extras": [
{
"label": "Total months",
"value": "46"
},
{
"label": "Age in decimal years",
"value": "3.88"
}
],
"tables": [],
"listSections": []
},
"formula": "Exact calendar-date difference. Cutoff date as entered by the user — no state rule assumed.",
"source": "Exact calendar-date difference. Cutoff date as entered by the user — no state rule assumed."
}
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