Candidates joining the RAF must be medically fully fit, both physically and psychologically, to meet the challenges of military service, during which they will be expected to deploy, potentially at short notice, to locations world-wide that are remote from established medical care.
Certain medical conditions could preclude entry to the RAF. Further details can be found in this document.
Body Mass Index (BMI) Information
Why is BMI important?
One of the most common medical causes of delay to candidate’s applications, is falling outside the selection BMI limits. Candidates with a BMI outside the selection limitations are statistically at increased risk of injury during basic training and long-term ill health.
What is BMI?
BMI is calculated using your height and weight. The National Institute for Health and Care Excellence (NICE) classify a healthy BMI as being between 18.5 and 24.9. Some individuals have an elevated BMI due to a high muscle mass. To accommodate individuals with an elevated BMI (up to a maximum of 32) caused by high muscle mass, waist circumference measurements are used.
How to measure your waist circumference
Breathe normally and the waist measurement is to be taken at the end of a normal breath out. Position the tape measure midway between the bottom of the ribcage and the top of the pelvis. The tape should be snug but not compress the skin. If there is difficulty finding the bony landmarks, place the tape at the level of the tummy button.
Calculating your BMI
Calculate your BMI here
BMI Limitations for RAF Selection
| Age |
BMI minimum |
BMI maximum |
Male maximum BMI (with additional assessment) |
Female maximum BMI (with additional assessment) |
| 18 or over |
18 |
30 |
32 (waist circumference less than 94cm) |
32 (waist circumference less than 80cm) |
| 16 to 17 |
17 |
27 |
27 |
27 |
Eyesight
Eyesight standards vary for different roles. Wearing glasses or contact lenses may be allowed.
Health Criteria
If you are unsure about any health criteria, please continue your application and your eligibility will be assessed at the medical examination stage.
During your application, the Medical Risk Assessment that all candidates undergo is there to make sure that you are healthy enough for the intense training required by the RAF. Your application will be rejected if you fail to meet the minimum acceptable medical standard for entry. Your medical history is confidential and is not disclosed to those not authorised to hold this information.