# \$20 in 1940 → \$356.51 in 2018

## Inflation Calculator

\$

### U.S. Inflation Rate, 1940-2018 (\$20)

According to the Bureau of Labor Statistics consumer price index, the dollar experienced an average inflation rate of 3.76% per year. Prices in 2018 are 1682.5% higher than prices in 1940.

In other words, \$20 in the year 1940 is equivalent in purchasing power to \$356.51 in 2018, a difference of \$336.51 over 78 years.

Compared to last year's annual rate, the inflation rate in 2018 is now 1.95%1. If this number holds, \$20 today would be equivalent to \$20.39 next year. The current inflation rate page gives more detail on the latest official inflation rates.

 Cumulative price change 1682.55% Average inflation rate 3.76% Price difference (\$20 base) \$336.51 CPI in 1940 14 CPI in 2018 249.554

#### Inflation rates for specific categories

Alcoholic beverages · Televisions · Electricity · More

S&P 500 price · S&P 500 earnings · Shiller P/E

### How to calculate the inflation rate for \$20 since 1940

This inflation calculator uses the following inflation rate formula:

CPI in 2018 / CPI in 1940 * 1940 USD value = 2018 USD value

Then plug in historical CPI values. The U.S. CPI was 14 in the year 1940 and 249.554 in 2018:

249.554 / 14 * \$20 = \$356.51

\$20 in 1940 has the same "purchasing power" as \$356.51 in 2018.

### Inflation Data Source

Raw data for these calculations comes from the Bureau of Labor Statistics' (CPI), established in 1913. Inflation data from 1665 to 1912 is sourced from a historical study conducted by political science professor Robert Sahr at Oregon State University.

You may use the following MLA citation for this page: “\$20 in 1940 → 2018 | Inflation Calculator.” U.S. Official Inflation Data, Alioth Finance, 26 May. 2018, https://www.officialdata.org/1940-dollars?amount=20.