Historical Inflation This calculator shows how inflation over the years has impacted purchasing power. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Have A Question About This Topic? Name Email Address Question Thank you! Oops! Related Content 18 Years’ Worth of Days The average retirement lasts for 18 years, with many lasting even longer. Will you fill your post-retirement days with purpose? Who Is Your Trusted Contact? This investment account question is vital and answered as early as possible. A Living Trust Primer Living trusts are popular, but their appropriateness will depend upon your individual needs and objectives.