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 Retiring Wild: National Parks and You Get ready to enjoy America’s national park system with this helpful article. What Can a Million Dollars Buy You? $1 million in a diversified portfolio could help finance part of your retirement. 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?