Consumer Price Index
Inflation and Deflation Calculators

  • Inflation Calculator:
    Use this excel file to calculate inflation from 1960 to the present for Anchorage and the U.S. It will help you calculate what $100 in 1980 equals today.

  • Deflation Calculator:
    Use this excel file to calculate deflation from 1960 to the present for Anchorage and the U.S. It will help you calculate what $100 today equaled in 1980.

How inflation or delfation is calculated:
What does $100 in 1980 dollars equal today?
Step 1:
2015 Anchorage CPI
divided by
1980 Anchorage CPI
216.909
--------------
85.5
=2.54
Step 2:
Multiply 2.54 by any number of 1980 dollars and you will have the 2015 equivalent.

($100 x 2.54= $254)

So, $254 in 2015 would have the same purchasing power as $100 did in 1980.
The formula can be reversed to deflate current dollars. Use the quick deflation calculator in excel.