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 Understanding Equity Compensation Net Unrealized Appreciation and how it affects tax responsibilities. Grantor Retained Annuity Trusts (GRATs) Explaining Grantor Retained Annuity Trusts (GRATs) and their benefit to estate strategy. 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?