Due Date Calculator
Estimate your due date from last menstrual period, IVF transfer or ultrasound data, and track gestational progress.
Processed server-side
Real-time
Base date
Applies to LMP mode only: ovulation is assumed 14 days before the next period.
Due date
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0
Week
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Days left
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Days elapsed
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Trimester
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Next check
About this tool
Estimate your due date from last menstrual period, IVF transfer or ultrasound data, and track gestational progress.
How to use
- Fill in the input box above, or click "Fill sample" to try it instantly
- Adjust the options as needed — results update as you type
- Click "Run" to get the result, then copy or export it in one click
Tips
- Processed on the server; uploaded files are deleted immediately afterwards and never retained
- Completely free, no registration, no usage limits