Intro: Age limits are one of the most crucial eligibility factors in government exams. Even a one-day error can make a candidate ineligible. This guide explains how to calculate age correctly on the official 'as-on' date, apply category relaxations, and avoid common mistakes while using the Age & Eligibility Calculator.
Why 'as-on' age matters
Exam notifications specify an 'as-on' date to decide eligibility. Missing this by even one day can disqualify you. Always refer to the official date mentioned in the notification.
How to calculate age correctly
- Find the 'as-on' date: Copy it exactly from the notification (e.g., "as on 01/01/2026").
- Use DOB from ID proofs: Ensure the date matches official documents.
- Calculate exact age: Use calendar difference — years, months, days (leap years included).
- Apply relaxations: Add SC/ST/OBC/PH relaxations to official limits before comparing.
Examples
Borderline case: DOB 02/01/2004, 'as-on' date 01/01/2026 → Age = 21 years, 11 months, 30 days. Candidate is not yet 22 and may be ineligible if max limit is 22.
Category relaxation: Max age 30 + OBC relaxation 3 years = effective max 33. Eligibility depends on comparison with DOB.
Common mistakes
- Wrong 'as-on' date: Copy exactly from notification (don’t assume).
- Timezone confusion: Most exams ignore time-of-day; if specified, follow precisely.
- Guessing DOB: Always use official ID proof.
Features of this tool
- Instant age calculation (years, months, days).
- Presets for SSC, UPSC, Bank, Railway, Police exams.
- Custom relaxation inputs for category checks.
- Local history (last 20 checks) with JSON/CSV export.
How to use the Age & Eligibility Calculator
- Open Age & Eligibility Calculator.
- Select preset or custom mode, enter DOB & 'as-on' date.
- Apply category relaxation if needed.
- Click Check Eligibility to view result (eligible / under-age / over-age).
- Export or save results for your records.
Record keeping
The tool stores your last 20 checks locally. Export as JSON/CSV for documentation and safe record-keeping.
Last updated: 2025-12-13 — LevoTools
FAQs
How accurate is this calculator?
It uses precise calendar arithmetic including leap years and month/day rollovers to compute exact years, months and days.
Can I test eligibility for multiple categories quickly?
Yes — apply different relaxation values (SC/ST/OBC/PH/General) or use the preset modes to compare results instantly.
Is my data uploaded to your servers?
No — by default calculations and history are saved locally in your browser. Any cloud-save option requires explicit consent.