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Estimate your pregnancy due date and trimester milestones. Free online due date calculator based on last menstrual period.
We noticed most online tools upload your files to remote servers. Since privacy is our core principle, we built this tool to process everything locally in your browser.
Yes, completely free with no signup required.
Yes, it works on mobile browsers with touch support.
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🔒 Privacy: All processing happens locally in your browser. Your files and data never leave your device — no upload, no server, no tracking.