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Pregnancy Weeks to Months Calculator

Convert pregnancy weeks into months and trimesters — with the standard 4-week and calendar-month views.

Enter values

Results update as you type.

Result

Calendar months

5.5

Standard (4-week) months
6
Trimester
Second
Weeks remaining
16

About the Pregnancy Weeks to Months Calculator

Convert pregnancy weeks into months and trimesters — with the standard 4-week and calendar-month views.

Also known as: weeks to months pregnancy, how many months is 30 weeks, pregnancy months.

How to use this calculator

  1. Enter weeks pregnant.
  2. The result updates instantly as you type — press Calculate (or Enter) at any time.
  3. Review the breakdown shown under the main result.
  4. Use Copy result or Share to save the answer or send a link with your inputs.

Formula

Months = weeks ÷ 4.345

Worked example

Using the values pre-filled in the calculator above:

  • Weeks pregnant = 24

the calculator returns:

  • Calendar months: 5.5
  • Standard (4-week) months: 6
  • Trimester: Second
  • Weeks remaining: 16