Calculator workspace
Use the Pregnancy Due Date Calculator
Enter your values in the calculator below. The legacy calculator source is embedded inside the new BiCalc page template until the native calculator component is rebuilt.
If the calculator does not load, open the legacy calculator source.
How to use the Pregnancy Due Date Calculator
- Enter your inputs. Add the values requested by the Pregnancy Due Date Calculator.
- Check units and options. Select the correct unit system, date format, rounding option, or mode when available.
- Calculate the result. Use the calculate button inside the calculator workspace.
- Review the output. Read the result, confirm the assumptions, and compare it with the formula or example notes when needed.
Pregnancy Due Date Calculator formula
Due date ≈ LMP + 280 daysUse the formula as a reference while entering values in the calculator above. Formula notes should be reviewed before publishing high-risk calculators.
Example calculation
For a typical pregnancy due date calculator workflow, enter the required values, confirm the units or settings, and calculate the result. The output should be reviewed together with the formula notes, assumptions, and any warnings shown by the calculator.
Understanding your result
The result depends on the inputs, units, rounding rules, and assumptions used by this calculator. If your calculation is important, repeat it with another method or verify it with a trusted source.
Pregnancy Due Date Calculator FAQ
What is the Pregnancy Due Date Calculator?
The Pregnancy Due Date Calculator is a free online health tool designed to help you complete this calculation quickly in your browser.
How do I use the Pregnancy Due Date Calculator?
Enter the required values in the calculator, choose any units or options shown, then use the calculate button to view your result.
Is this calculator free?
Yes. BiCalc calculators are free to use and are built for quick everyday calculations.
Can I rely on the result for important decisions?
Use the result as a helpful estimate. For financial, medical, legal, engineering, or safety-critical decisions, verify the result with a qualified professional or authoritative source.
Last reviewed and disclaimer
Last updated: 2026-04-24 · Last reviewed: Pending editorial review
This calculator is for general informational purposes only and is not medical advice. Consult a qualified health professional for personal medical guidance.
Found a problem? Report an issue with this calculator.