Pregnancy Due Date Calculator
Estimate your due date from the first day of your last period.
How it works
Fill in the 1 field above and Pregnancy Due Date Calculator calculates the result instantly, recalculating as you change any value. The math runs locally in your browser — nothing is sent to a server.
Examples
- First day of last period 2026-01-01 → Estimated due date: 7 de octubre de 2026
Frequently asked questions
How do I use the Pregnancy Due Date Calculator?
Enter your values in the 1 input field and the result is calculated automatically as you type. Change any value to see the numbers update instantly.
Is my data private?
Yes. The Pregnancy Due Date Calculator runs entirely in your browser. Nothing you enter is uploaded, saved to a server, or shared — it never leaves your device.
Is the Pregnancy Due Date Calculator free?
Yes, it is completely free with no sign-up, no limits and no watermarks. Like every tool on health & fitness and the rest of the platform, you can use it as often as you like.
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