Pregnancy Weeks / Gestational Age Calculator

Free pregnancy weeks / gestational age calculator for pregnancy week calculator. Enter the values below to get an instant result.

JavaScript is required for live calculation.

You can still read how Pregnancy Weeks / Gestational Age Calculator works, the formula, examples, and FAQs below.

Start / birth date
End date

Inputs

Start / birth date

End date

Results update when you click Calculate.

Days between

12998

Years

35.59

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Recently used

Tools you open will show up here on this device — with your last inputs when available.

What this result means

Free pregnancy weeks / gestational age calculator for pregnancy week calculator. Enter the values below to get an instant result. Calculate pregnancy weeks / gestational age using LMP/current date. Result: gestational age.

Assumptions

Rule dependency: Clinical guideline / formula; may vary by jurisdiction.

How it works

Calculate pregnancy weeks / gestational age using LMP/current date. Result: gestational age.

Example

Example: “pregnancy week calculator”. Enter your values and click the button to get a result.

Frequently asked questions

What does this pregnancy weeks / gestational age calculator do?+

It helps you calculate pregnancy weeks / gestational age. Typical search: “pregnancy week calculator”.

How should I read the result?+

Calculate pregnancy weeks / gestational age using LMP/current date. Result: gestational age.