Pregnancy Due Date Calculator
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Detailed Calculation
Enter your values and click Calculate to see the calculation.
What can you use this calculator for?
Free Pregnancy Due Date Calculator for India users with clear, instant results.
- Get a quick estimate from standard formulas.
- Track changes by re-running with new values.
- Understand the numbers behind health and fitness targets.
- Prepare better questions for your doctor or dietitian.
Important functions and useful information
Estimated due date
Weeks and days pregnant
Trimester and days remaining
Key milestone dates
Planning & Forecasting
You can change the inputs several times to create different scenarios. This is useful for comparing possible outcomes before making a decision.
Goal tracking
Re-run the calculation after changes in weight, activity or habits.
Plan comparison
Try different goals or activity levels to see the effect.
How to use this calculator
- Enter the required values in the calculator above.
- Check that the units, rate and period are correct.
- Click Calculate.
- Review the main result and the detailed breakdown.
- Change one or more values to compare another scenario.
Frequently Asked Questions
How is the due date calculated?
The due date is 280 days (40 weeks) after the first day of your last period, adjusted if your cycle is longer or shorter than 28 days. Only about 5% of babies arrive on that date.
Is this a medical diagnosis?
No. It gives general estimates from common formulas and cannot replace advice from a healthcare professional.
Why can results differ from other tools?
Different tools use different equations and category cut-offs. This one states the method it uses.
Can I change the inputs and recalculate?
Yes. Change any value and press Calculate. The result, the table and the explanation update straight away.
Note
This calculator gives general information only and is not medical advice. Talk to a doctor or registered dietitian before changing your diet, exercise or health routine.