How to use the Pregnancy Due Date Calculator
- Enter the first day of your last period
- Adjust cycle length if needed
- See your due date and pregnancy week
About this tool
Calculate your baby's due date, current week of pregnancy and trimester from the first day of your last period. Pregnancy Due Date Calculator is part of ToolNest's collection of free health & fitness. It works instantly in your browser with no account and no installation.
Frequently asked questions
Is the Pregnancy Due Date Calculator free to use?
Yes. Pregnancy Due Date Calculator on ToolNest is completely free, with no sign-up, no watermark and no daily limits.
How accurate is the Pregnancy Due Date Calculator?
Pregnancy Due Date Calculator uses standard, widely accepted formulas and calculates instantly as you type. Results are for general information — for important medical decisions, please confirm with a qualified professional or your institution.
Is my data saved anywhere?
No. Everything you enter stays in your browser. Nothing is sent to or stored on our servers.
Does Pregnancy Due Date Calculator work on mobile phones?
Yes. ToolNest works in any modern browser on Android, iPhone, iPad, Windows, Mac and Linux. There is nothing to install.