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Download Conversion Factors


Tables for 1774 to estimated 2024 and the conversion factor tables for 2013, and estimated 2014 were revised April 8,  2014, for both pdf and Excel files.

Excel file with column-format conversion factors 1774 to estimated 2024 have been revised to reflect final 2013 CPI.

For ease of printing, the Excel file is available also in pdf format: Conversion factors 1774 to estimated 2024 (revised to reflect final 2013 CPI.)

The above tables show conversion factors for CPI (1982-84 Dollars), 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, estimated 2014, CPI-U-X1 (2013 dollars), and CPI-U-RS (an experimental measure, using 2013 dollars, and updated CPI-U-RS data from the Bureau of Labor Statistics). This file provides both conversion factors for each of those inflation measures and also inflation rates using CPI-U for years starting 1774, CPI-U-RS for years starting 1947, and CPI-U-X1 for years starting 1950.  These files also show "chain-weighted" inflation data, since that has been a topic of recent interest.

Inflation assumptions:   Inflation conversion factors for 2014 and later years assume 1.65% inflation in 2014, 2.00% in 2015, 2.10% in 2016, 2.20% in 2017, and 2.35% in each year 2018 through 2024.  These are averages of OMB and CBO inflation estimates as of January (CBO) and March (OMB) 2014.

Data prior to 1913 are estimates; data for 1913 to the present involve data from the Bureau of Labor Statistics, though the specific methods of data collection have changed during that period. Use special caution concerning data prior to 1913.

I strongly recommended that all dollar figures using these conversion factors for years prior to 1913 be rounded, e.g., $14,663 becomes $14,700, and preferably—especially for early years—to $15,000. Similarly, round dollars derived for years 1913 to the present to, for example, $14,660.

Stating dollar figure conversions in dollars and cents nearly always suggests more precision than the data allow.