Pregnancy Due Date Calculator

Estimate your pregnancy due date from the first day of your last menstrual period.

Calculators

First day of last menstrual period

Trimester 2 starts

Wed Oct 14 2026

Trimester 3 starts

Wed Jan 27 2027

Estimated due date

Wed Apr 28 2027

How to use the Pregnancy Due Date Calculator

1Open the Pregnancy Due Date Calculator above.
2Enter your input in the fields provided.
3Click the primary action button to run the tool.
4Copy, download or share your result.

Why people use it

Use the Pregnancy Due Date Calculator whenever you need a fast, reliable calculator without installing software.
Great for one-off jobs where opening a full desktop app is overkill.
Safe for sensitive data — everything runs inside your browser.
Free forever, no signup required.

Frequently asked questions

Is the Pregnancy Due Date Calculator really free?

Yes — every tool on FreeToolz is free to use with no signup, no trial and no hidden limits. FreeToolz is supported by unobtrusive advertising.

Is my data safe?

Most FreeToolz utilities run entirely inside your browser, so your inputs never leave your device. When a tool needs a server (for example, AI features), it's clearly indicated on the page.

Does it work on mobile?

Yes — every tool is designed to work on modern phones, tablets and desktops without installing anything.

Do I need to create an account?

No account is required. Just open the page and start using the tool.