Chest Measurement Converter — Inches to cm & Army Eligibility
Convert chest measurements between inches and centimetres. Enter unexpanded and expanded chest size to check if you meet the Army (77/82 cm), NDA, CISF, CRPF, or BSF chest standard — including the mandatory 5 cm expansion check.
Input Unit
Required: 77 cm unexpanded, 82 cm expanded (+5 cm min expansion)
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Fill in the details on the left to see your result
Chest Measurement Standards — Army, NDA, CISF, CRPF, BSF 2026
Official unexpanded, expanded, and minimum expansion requirements for major force recruitments.
| Force / Category | Unexpanded (cm) | Expanded (cm) | Min. Expansion | In Inches |
|---|---|---|---|---|
| Indian Army — General/OBC/SC (Male) | 77 | 82 | +5 cm | 30.3" / 32.3" |
| Indian Army — ST/Hill/Tribal (Male) | 76 | 81 | +5 cm | 29.9" / 31.9" |
| NDA (National Defence Academy) | 77 | 82 | +5 cm | 30.3" / 32.3" |
| CISF — General/OBC (Male) | 77 | 82 | +5 cm | 30.3" / 32.3" |
| CISF — SC/ST/Hill (Male) | 76 | 81 | +5 cm | 29.9" / 31.9" |
| CRPF — General/OBC (Male) | 77 | 82 | +5 cm | 30.3" / 32.3" |
| CRPF — SC/ST (Male) | 76 | 81 | +5 cm | 29.9" / 31.9" |
| BSF — General (Male) | 77 | 82 | +5 cm | 30.3" / 32.3" |
* Female candidates are not subject to chest measurement requirements in any of these forces.
Inches to CM Quick Reference — Chest Measurements
Common chest measurement values in inches with their centimetre equivalents (1 inch = 2.54 cm).
| Inches | Centimetres | Meets Army Standard? |
|---|---|---|
| 28" | 71.1 cm | Below Army minimum |
| 29" | 73.7 cm | Below Army minimum |
| 30" | 76.2 cm | Below Army minimum |
| 30.5" | 77.5 cm | Meets unexpanded (77 cm) |
| 31" | 78.7 cm | Meets unexpanded (77 cm) |
| 31.5" | 80 cm | Meets unexpanded (77 cm) |
| 32" | 81.3 cm | Meets unexpanded (77 cm) |
| 32.5" | 82.6 cm | Meets expanded (82 cm) |
| 33" | 83.8 cm | Meets expanded (82 cm) |
| 34" | 86.4 cm | Meets expanded (82 cm) |
| 35" | 88.9 cm | Meets expanded (82 cm) |
| 36" | 91.4 cm | Meets expanded (82 cm) |
How to Use This Chest Converter
Select Input Unit
Choose "Inches → cm" if you know your chest in inches (common when measured with a tape measure in imperial units), or "cm → Inches" if you know it in centimetres.
Enter Unexpanded Chest
Enter your chest measurement taken at the end of a normal breath (unexpanded). This is typically measured by a tailor or doctor at rest.
Enter Expanded Chest (Optional but Recommended)
Enter your chest measurement taken after a maximum deep breath (fully expanded). This is critical for the 5 cm expansion check required by the Army and all paramilitary forces.
Select Force / Standard
Choose the force you are applying to from the dropdown. The required unexpanded, expanded, and minimum expansion values are shown. The result checks each criteria separately.
Read the Verdict
Each measurement (unexpanded, expanded, expansion) is checked individually — pass or fail. The overall verdict at the bottom shows if you are eligible for the selected force.
Frequently Asked Questions
1What is the chest measurement requirement for the Indian Army?
For Indian Army male candidates from General, OBC, and SC categories, the minimum chest measurement is 77 cm (approximately 30.3 inches) when unexpanded, and 82 cm (approximately 32.3 inches) when fully expanded — a mandatory minimum expansion of 5 cm. For candidates from ST, Gorkha, hill, and tribal regions, the requirement is 76 cm unexpanded and 81 cm expanded (still 5 cm expansion). Female Army candidates are not assessed on chest measurement. These standards apply to all regular Army Agniveer and direct recruitment rallies.
2Why is the 5 cm chest expansion mandatory?
The 5 cm minimum chest expansion requirement tests the capacity of the lungs and the flexibility of the ribcage and intercostal muscles. Adequate chest expansion is an indicator of healthy respiratory function and physical fitness, which is essential for high-intensity military duties including long marches, high-altitude postings, and combat operations. Even if your unexpanded and expanded measurements individually meet or exceed the minimums, you must demonstrate at least 5 cm of expansion — candidates with a large chest but poor expansion (e.g., 85 cm unexpanded, 88 cm expanded = only 3 cm expansion) would fail.
3How is chest measurement taken during Army or CRPF recruitment?
Chest measurement is taken by a trained medical examiner using a measuring tape. The tape is placed around the chest at the level of the nipples (or slightly above, at the level of the lower angle of the shoulder blades). For the unexpanded reading, the candidate breathes normally and the measurement is taken at the end of a normal expiration. For the expanded reading, the candidate takes the deepest breath possible and the measurement is taken at full inspiration. Candidates must not artificially puff out or hold their breath before the tape is placed.
4How do I convert chest measurement from inches to centimetres?
1 inch = 2.54 centimetres. To convert chest measurement from inches to cm, multiply the inches value by 2.54. Examples: 30 inches = 30 × 2.54 = 76.2 cm; 30.5 inches = 30.5 × 2.54 = 77.47 cm; 32 inches = 32 × 2.54 = 81.28 cm; 32.5 inches = 32.5 × 2.54 = 82.55 cm. Our converter handles this calculation automatically and also checks whether the result meets the Army/CISF/CRPF standard for the category you select.
5Is chest measurement checked for CRPF, BSF, and CISF constables?
Yes, chest measurement (for male candidates only) is checked during the Physical Standard Test (PST) for CRPF Constable GD, BSF Constable GD, and CISF Constable/Head Constable posts. The standard for General/OBC category is 77 cm (unexpanded) / 82 cm (expanded), with 5 cm expansion. SC/ST and hill region candidates have a relaxed standard of 76 cm / 81 cm. Female candidates in these forces are not assessed on chest measurement.
6Do female candidates need to meet any chest measurement requirement?
No. Chest measurement as a recruitment criterion applies only to male candidates in the Indian Army, CRPF, BSF, CISF, RPF, and other paramilitary forces. Female candidates are assessed on height, weight (proportionate to height), and general medical fitness, but not on chest measurement. This is consistent across all central government defence and security force recruitments.
7What if my chest does not expand by 5 cm? Can I improve it?
Yes, chest expansion can be significantly improved with regular breathing exercises and physical training. Recommended exercises include: (1) Deep breathing exercises (pranayama) — especially Bhastrika and Anulom Vilom which strengthen respiratory muscles. (2) Swimming — one of the best activities for chest expansion. (3) Push-ups, pull-ups, and chest stretches. (4) Weight training targeting the pectorals, intercostals, and back muscles. Most fitness trainers advise candidates to begin a dedicated training programme 3–6 months before the recruitment rally. Improvements of 3–5 cm in expansion are achievable with consistent effort.
8Is there a chest requirement for NDA (National Defence Academy)?
Yes, NDA candidates are required to meet the Army Medical Corps standard for chest measurement as part of the Service Selection Board (SSB) medical examination. The standard is the same as Army General category: 77 cm unexpanded and 82 cm expanded with a minimum 5 cm expansion. This is assessed at the military hospital during the medical examination held after SSB selection. Candidates who fail the medical (including chest standards) are given a MEDICALLY UNFIT rating and can apply for a re-medical review within a specified time period.