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School start age

Work out a child’s age on a school entry cut-off and whether the minimum age is met.

Built and maintained by The NumberPrism Editorial TeamEditorial policy

Your details

Results update as you type. The formula and assumptions are explained below the calculator.

Age on the cut-off date

7 years, 0 months, 0 days

Cut-off dateTue, Sep 1, 2026
Minimum age5 years
EligibilityMinimum age reached by the cut-off
Turns the minimum age onSun, Sep 1, 2024
Days from birth to the cut-off2,557 days

Admission rules differ by country and district. Confirm the official cut-off date and any assessment requirements with the school.

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What does this tool do?

Admission is usually decided by the child’s age on a fixed cut-off date. This calculator shows the exact age on that date, the birthday on which the minimum age is reached, and whether that date falls before the cut-off.

The Formula

Eligible when birth date + minimum age ≤ school entry cut-off date

Frequently Asked Questions

What does the cut-off date mean?

It is the date on which the child’s age is measured. A child who reaches the minimum age on or before that date is usually eligible, but districts can apply different windows.

Why show the age in years, months and days?

Calendar ages are not a simple division by 365 because month lengths and leap years vary. The breakdown is exact for the two dates entered.