Pregnancy Due Date Calculator

Calculate your pregnancy due date and trimester dates.

100% free
No sign-up
Instant results
Privacy-friendly

First day of last menstrual period Average cycle length (days)

About the Pregnancy Due Date Calculator

Calculate your pregnancy due date and trimester dates. The Pregnancy Due Date Calculator on The 360 Tools is fast, accurate and completely free — no account, no downloads and no usage limits.

Like every tool in our health collection, the Pregnancy Due Date Calculator runs directly in your browser. Your input is processed locally whenever possible, so results are instant and your data stays private.

How it works

1 Enter your measurements (units are switchable)
2 Results are computed with recognised medical formulas
3 Everything is calculated locally — your data never leaves the browser

Frequently asked questions

Is the Pregnancy Due Date Calculator free to use?

Yes. The Pregnancy Due Date Calculator is completely free with no sign-up, no hidden charges and no usage limits. All tools on The 360 Tools are free forever.

Is my data safe when using the Pregnancy Due Date Calculator?

Yes. Your input is processed locally in your browser whenever possible and is never stored on our servers or shared with third parties.

Does the Pregnancy Due Date Calculator work on mobile?

Yes. The Pregnancy Due Date Calculator is built mobile-first and works on any modern phone, tablet or desktop browser without installing anything.