Mammogram Schedule Calculator (When Is My Next Mammogram Due?)

How it works

next due = last mammogram + interval · USPSTF 2024: every 2 years, 40–74 · ACS: optional yearly 40–44, yearly 45–54, every 1–2 years from 55 · ACR: yearly from 40 · EU (ECIBC): every 2 years 50–69; suggested every 2–3 years 45–49 and every 3 years 70–74 · high risk: yearly, often with MRI

Screening mammograms find breast cancer before it can be felt. In 2024 the US Preventive Services Task Force lowered its starting age to 40 and recommends a mammogram every 2 years until 74. The American Cancer Society suggests yearly mammograms from 45 to 54, then every 1–2 years, and the American College of Radiology yearly from 40. European guidelines, which Spain and many national programmes follow, invite women aged 50–69 every 2 years. People at high risk (BRCA mutations, chest radiation when young, strong family history) start earlier and usually add MRI.

Worked example

A 45-year-old at average risk whose last mammogram was on June 1, 2025: under USPSTF 2024 the interval is 2 years, so the next mammogram is due on Tuesday, June 1, 2027. Under the American Cancer Society guideline it would be due after 1 year, on June 1, 2026.

Sources: USPSTF (2024): Breast cancer screening · American Cancer Society: Recommendations for early detection of breast cancer · European Commission Initiative on Breast Cancer: screening recommendations

Frequently asked questions