Web Sites for Calculators
calculator.com
Offers scientific, currency, time, unit converter, finance, distance, and cooking calculators to name only a few.
Inflation Calculator
"Adjusts any given amount of money for inflation, according to the Consumer Price Index, from 1800 to 2007" (at present). Sources for the statistics are Historical Statistics of the United States and Statistical Abstracts of the United States.
What is a dollar worth? (Woodrow Federal Reserve Bank of Minneapolis)
Uses the Consumer Price Index (CPI) to calculate how prices have changed over the years. Enter two dates between 1913 and 2000 (at present) and a dollar amount for comparisons.