Free Online Pregnancy Due Date Calculator
Estimate your due date and current trimester from your last period.
The default 28-day cycle is used for the standard due-date estimate.
This is an estimate based on the Naegele rule. Ultrasound dating and your healthcare provider's assessment are more accurate. Always discuss your due date with a medical professional.
About the Pregnancy Due Date Calculator
Free pregnancy due date calculator. Estimate your due date, current week, and trimester using your last menstrual period and cycle length.
How to use this tool
Use the controls above to enter your values, choose your options, and view the result. The tool updates as you work, and the result can be copied or downloaded where supported.
Frequently asked questions
Is this tool free?
Yes. Every tool on ImGenerate is free to use and does not require an account.
Is my data safe?
Tools that run entirely in the browser keep your data on your device. Any server-backed lookup is noted in the tool and only sends the information needed for the result.