Colorectal Cancer Risk Assessment Tool: Online Calculator

The Colorectal Cancer Risk Assessment Tool is a calculator designed for doctors and other health care providers to use with their patients.

Estimate Risk of Colon or Rectal Cancer

The calculator estimates the risk of colorectal over the next five years and the lifetime risk for men and women who are:

  • Between the ages of 45 and 85
  • White
  • Black/African American
  • Asian American/Pacific Islander
  • Hispanic/Latino

This calculator takes about five minutes to complete.

Tool Limitations

This tool cannot accurately estimate risk of colorectal cancer for people who have the following health conditions:

  • Ulcerative colitis
  • Crohn disease
  • Familial adenomatous polyposis (FAP)
  • Hereditary Nonpolyposis Colorectal Cancer (HNPCC), also known as Lynch Syndrome
  • Personal history of colon or rectal cancer

About the Calculator

There is not as much data available for Black/African American, Asian American/Pacific Islander, or Hispanic/Latino individuals. Until researchers complete additional studies to provide more information about these groups, their results may be less accurate. While the calculator is not perfect, it can still help doctors and their patients better understand personal risk of colorectal cancer.

Calculator Limitations

This calculator does not currently apply to American Indian and Alaska Native individuals; however, we plan to improve the calculator for use by these groups.

This calculator cannot accurately estimate risk of colorectal cancer for people who have the following health conditions:

  • Ulcerative colitis
  • Crohn disease
  • Familial adenomatous polyposis (FAP)
  • Hereditary Nonpolyposis Colorectal Cancer (HNPCC), also known as Lynch Syndrome
  • Personal history of colon or rectal cancer

Resources on Colorectal Cancer Risk