Pregnancy Due Date Calculator
Estimate a pregnancy due date and current week using Naegele's rule (280 days from the last period). An ultrasound gives a more accurate date. Runs in your browser.
Runs in your browser — your file never leaves your deviceFrequently asked questions
Is Pregnancy Due Date Calculator free to use?
Yes — Pregnancy Due Date Calculator is completely free with no limits, no watermarks and no sign-up. It runs in your browser, so there is nothing to pay for.
Are my files uploaded or stored anywhere?
No. This tool does all its work locally in your browser using your own device's power. Your files never leave your device and we never see them.
Do I need to install anything or create an account?
No installation and no account needed. Pregnancy Due Date Calculator works on any modern browser — Windows, Mac, Linux, Android and iPhone.
How do I use Pregnancy Due Date Calculator?
Open the tool, add your file (or paste your content), adjust any options, then press “Estimate due date”. Your result is ready to download in seconds.
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