Seafarer tools
BMI Calculator for Seafarers
Calculate your Body Mass Index (BMI) instantly and check whether you meet the recommended fitness standards for medical examinations.
Enter your details
Uses WHO BMI categories. Gender and age are for personalisation only and do not change the BMI formula.
Your BMI
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BMI Formula
Standard WHO Body Mass Index calculation used worldwide for adult weight classification.
BMI = Weight (kg) ÷ Height² (m)
- Underweight < 18.5
- Normal 18.5 – 24.9
- Overweight 25.0 – 29.9
- Obese ≥ 30.0
Why BMI Matters for Seafarers
Staying within a healthy range supports medical fitness, safety at sea, and long-term career readiness.
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Helps you prepare for DG Shipping and company medical examinations.
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Supports overall fitness for sea service and watchkeeping duties.
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Reduces health risks while onboard, far from advanced medical facilities.
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Encourages a healthy lifestyle between contracts and during shore leave.