Breast Cancer Risk Factor Calculator
Get an educational estimate of your breast cancer risk level by tallying well-established risk factors such as age, family history, and breast density. This screening guide highlights whether a conversation with your doctor about earlier or extra screening may be worthwhile.
Rates and fees change frequently. Always confirm the current figures
with the official authority before relying on this result.
Formula
Risk Score = sum of points from age, family history, prior biopsy, reproductive history, and breast density
- Each established risk factor adds points: age and family history carry the most weight.
- Age: under 40 (0), 40–49 (1), 50–59 (2), 60+ (3) — risk rises with age.
- Family history: none (0), one first-degree relative (2), multiple/early-onset or known BRCA (4).
- A prior biopsy showing atypia or LCIS adds 2; late or no childbearing adds 1; dense breasts add 1.
- This is a simplified educational tally, not a validated model like Gail or Tyrer-Cuzick — always confirm risk with a clinician.
Age 52, one affected relative, dense breasts
Inputs
- Age Group: 50s
- Family History: one
- Prior Breast Biopsy with Atypia / LCIS: no
- First Child After 30, or No Children: no
- Dense Breast Tissue: yes
Points = 2 (age) + 2 (family) + 0 + 0 + 1 (density) = 5, placing you 'moderately above average' — worth discussing extra screening with your doctor.
Frequently asked questions
Is this a validated risk model?
No. It is a simplified educational tally of common risk factors. Formal models such as Gail or Tyrer-Cuzick give validated numerical risks and should be used with a clinician.
What are the biggest breast cancer risk factors?
Being female, increasing age, and a strong family history (especially BRCA1/BRCA2 mutations) are among the strongest. Dense breasts and certain biopsy findings also raise risk.
Does a low score mean I won't get breast cancer?
No. Most breast cancers occur in people without major risk factors, which is why routine screening matters for everyone in the recommended age range.
What should I do if my risk is elevated?
Discuss your history with your doctor. They may recommend earlier or more frequent screening, MRI, or referral for genetic counselling.