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 Message Thank you! Oops! Related Content Orchestrating Your Retirement Accounts Getting the instruments of your retirement to work in concert may go far in realizing the retirement you imagine. Inflation and Your Portfolio Even low inflation rates can pose a threat to investment returns. Life and Death of a Twenty Dollar Bill How long does a $20 bill last?