Pregnancy Due Date Calculator
Estimate a pregnancy due date from the first day of the last period (Naegele's rule).
Select a date.
This is an estimate only — always confirm with your doctor or midwife.
How to Use the Pregnancy Due Date Calculator
- Fill in the fields the pregnancy due date calculator asks for.
- The result updates automatically, or click the calculate button if one is shown.
- Adjust any figure to instantly see how the result changes.
Frequently Asked Questions
Is the Pregnancy Due Date Calculator free to use?
Yes. Every tool on ToolMint is completely free, with no sign-up and no limit on how many times you can use it.
Does this tool store or upload my data?
No. The Pregnancy Due Date Calculator runs entirely in your browser using JavaScript — nothing you type or upload is sent to a server or stored anywhere.
Can I trust the result for financial or medical decisions?
This calculator gives a solid estimate based on standard formulas, but for financial, tax or medical decisions you should confirm the figures with a qualified professional.