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Defence Age Calculator – NDA, CDS, AFCAT & SSC GD Eligibility

Check NDA, CDS, AFCAT, Indian Air Force, Agniveer & SSC GD eligibility instantly

Key Takeaways:

Every year, thousands of defence aspirants clear written exams but get rejected on the very first day of verification — only because of age miscalculation. This defence age calculator removes that risk by checking eligibility strictly as per official UPSC, AFCAT and SSC cut-off dates.

Last updated on 10 January 2026 to align with latest UPSC, AFCAT & SSC age eligibility notifications.

Most aspirants skip this step — don’t.

Defence Age Calculator – Official Eligibility Checker

Calculate your exact age in years, months & days strictly as per official defence recruitment rules.

🎯 Why Age Accuracy Matters

Even a one-day mismatch can cause rejection during document verification or SSB. Using the official cut-off date is non-negotiable.

🛡 Common Rejection Reasons
  • Wrong DOB interpretation
  • Ignoring official cut-offs
  • Assuming written exam = eligibility
✅ Trusted by Aspirants

Used by thousands preparing for NDA, CDS, AFCAT & SSC GD across India to plan their career timeline accurately.

Defence Exams Covered

NDA CDS AFCAT Agniveer SSC GD

How to Use the Calculator

1Select your correct date of birth
2Click on Check Eligibility
3View exact age & eligible exams instantly
Defence age eligibility calculator illustration

Frequently Asked Questions

Common questions related to defence age eligibility and official recruitment rules.

01
What makes Hind Defence Academy different from other coaching institutes?

Hind Defence Academy focuses on discipline and daily execution. Unlike others, our training program integrates physical endurance with academic rigor to prepare students for the full selection cycle.

Our strict routine includes daily academic classes, rigorous physical training, and mandatory revision sessions. We believe the academy should build officers, not just exam qualifiers.

02
Is this NDA age calculator accurate?

Yes. This defence age calculator follows official UPSC, AFCAT and SSC notifications instead of general age logic. It is specifically programmed with the cut-off dates mentioned in the latest 2026 notifications.

In our experience, most rejections happen because aspirants calculate age based on today’s date, which is not valid for defence exams. For instance, the Official UPSC website clearly states specific date brackets for NDA and CDS eligibility.

This calculator checks eligibility using those specific cut-off dates, ensuring you don't waste an attempt. You can also verify your eligibility manually using official notifications available on our defence exam blog section.

03
Can I use this for CDS and AFCAT together?

Absolutely. Our system is designed to check multi-exam eligibility in a single click. While NDA has a lower age cap (16.5 to 19.5 years), CDS and AFCAT cater to older candidates, usually ranging from 19 to 26 depending on the branch.

When you enter your DOB, the system cross-references it with the database for all 5 major categories: NDA, CDS, AFCAT, Agniveer, and SSC GD. Each has its own distinct rule set as per the Air Force and SSC guidelines.

04
Why do candidates get rejected despite clearing written exams?

The most heartbreaking rejections occur during document verification. Candidates often assume that if they can fill out the form, they are eligible. However, the software at the application stage doesn't always catch complex DOB mismatches.

Our research shows that approximately 5% of candidates are disqualified because they are "Over-age" by just a few days on the specific joining date mentioned in the notification. This tool is built to prevent that specific scenario by applying the exact mathematical logic used by recruiters.

About The Author

Written by the Hind Defence Academy Research Team, specialists with over 10 years of experience guiding NDA, CDS and AFCAT aspirants through the selection process.

Reviewed by a Senior Defence Career Counsellor with 8+ years of experience in verifying documentation and eligibility for Indian Armed Forces entry schemes.