$21.72 in 2015 → $22.87 in 2018

Inflation Calculator

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U.S. Inflation Rate, 2015-2018 ($21.72)

According to the Bureau of Labor Statistics consumer price index, the dollar experienced an average inflation rate of 1.73% per year. Prices in 2018 are 5.3% higher than prices in 2015.

In other words, $21.72 in the year 2015 is equivalent in purchasing power to $22.87 in 2018, a difference of $1.15 over 3 years.

Compared to last year's annual rate, the inflation rate in 2018 is now 1.95%1. If this number holds, $21.72 today would be equivalent to $22.14 next year. The current inflation rate page gives more detail on the latest official inflation rates.

Inflation from 2015 to 2018
Cumulative price change 5.29%
Average inflation rate 1.73%
Price difference ($21.72 base) $1.15
CPI in 2015 237.017
CPI in 2018 249.554


U.S. inflation from 1913 to 2017


Inflation rates for specific categories

Film and photographic supplies · Food · Baby food · More

Inflation-adjusted measures

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

How to calculate the inflation rate for $21.72 since 2015

This inflation calculator uses the following inflation rate formula:

CPI in 2018 / CPI in 2015 * 2015 USD value = 2018 USD value

Then plug in historical CPI values. The U.S. CPI was 237.017 in the year 2015 and 249.554 in 2018:

249.554 / 237.017 * $21.72 = $22.87

$21.72 in 2015 has the same "purchasing power" as $22.87 in 2018.


News headlines from 2015

Politics and news often influence economic performance. Here's what was happening at the time:

  • Barack Obama and Raul Castro, hold the first meeting between Cuban and American leaders since the Cuban Revolution.
  • The population of India reaches 1 billion (officially). The billionth baby was named Astha Arora.
  • Donald Trump announces his intention to join the US presidential campaign.
  • China brings an end to its one child policy, 35 years after it was first introduced.

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: “$21.72 in 2015 → 2018 | Inflation Calculator.” U.S. Official Inflation Data, Alioth Finance, 23 May. 2018, https://www.officialdata.org/2015-dollars-in-2018?amount=21.72.


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