Date & time Age

Age in months calculator

Date of birth

On this date

Months old —

The same age, other ways

Exactly —

In weeks —

In days —

In hours —

Born on a —

Next birthday —

Days to go —

Turning —

Note Enter a date of birth

Whole calendar months

Total months is complete years times twelve plus the leftover months. A child born on 15 June 2024 is 26 months old on 23 August 2026 — two years and two months.

How to find an age in months

1 Enter the date of birth.

2 Read the total months.

3 The years-months-days breakdown is beneath it.

4 Months are whole calendar months, not 30-day blocks.

Months are the standard unit for the first two or three years because development moves fast enough that years are too coarse. Health visitors, vaccination schedules and developmental checks all work in months, and clothing sizes are labelled that way for the same reason. After about three years the convention shifts to years, at which point stating an age in months starts to sound odd.

Questions

How many months old is my child? −

Complete years times twelve plus the leftover months — the figure at the top.

Why do people use months for babies? +

Is a month 30 days here? +

When should I switch to years? +

What about a preterm baby? +

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