Calculate your current pregnancy week, trimester and key milestones from your LMP date.
Calculate your current pregnancy week, trimester and key milestones from your LMP date. This tool gives a general estimate based on standard health formulas — it's a starting point for understanding your numbers, not a diagnosis or medical advice.
Calculate your pregnancy week, trimester and key milestones from your last menstrual period date. The Pregnancy Calculator page explains what the tool or support page provides, what information is needed and how to use the result or guidance for an everyday task.
Use Pregnancy Calculator when you need a quick answer without creating an account, downloading an app or sending your information to a third party. The tool is designed for everyday planning, comparison and checking, with results shown in the browser as soon as you enter the details.
Pregnancy Calculator is useful for quick checks, household planning, school or work tasks, content planning and comparing simple scenarios. Many visitors use these tools to avoid manual counting or spreadsheet setup for a one-off question.
The result should be treated as a practical guide rather than professional advice. For legal, financial, health, tax, pregnancy, school holiday, tide or public holiday decisions, confirm important details with an official source or qualified professional.
MyCalcTools tools run in your browser wherever possible. We aim to keep pages clear, lightweight and easy to read on mobile, tablet and desktop. If a page uses dates, public holidays or calendar rules, those rules can change over time, so checking the final result against the relevant authority is recommended for high-stakes decisions.
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