$1 in 1927 is equivalent in purchasing power to about $0.98 in 1928.
The dollar had an average **deflation** rate of -1.72% per year since 1927, producing a cumulative price change of -1.72%.
Purchasing power *increased* by 1.72% in 1928 compared to 1927. On average, you would have to spend 1.72% *less* money in 1928 than in 1927 for the same item.
This is an example of **deflation**.

This means that prices in 1928 are 1.72% lower than average prices since 1927, according to the Bureau of Labor Statistics consumer price index.

The 1927 inflation rate was -1.69%. The inflation rate in 1928 was -1.72%. The 1928 inflation rate is lower compared to the average inflation rate of 3.03% per year between 1928 and 2021.

Inflation rate is calculated by change in the consumer price index (CPI). The CPI in 1928 was 17.10. It was 17.40 in the previous year, 1927. The difference in CPI between the years is used by the Bureau of Labor Statistics to officially determine inflation. Because the 1928 CPI is less than 1927 CPI, negative inflation (also known as deflation) has occurred.

Contents

⌃

Average inflation rate | -1.72% |

Converted amount ($1 base) | $0.98 |

Price difference ($1 base) | $-0.02 |

CPI in 1927 | 17.400 |

CPI in 1928 | 17.100 |

Inflation in 1927 | -1.69% |

Inflation in 1928 | -1.72% |

$1 in 1927 | $0.98 in 1928 |

Inflation can vary widely by city, even within the United States. Here's how some cities fared in 1927 to 1928 (figures shown are purchasing power equivalents of $1):

**San Francisco, California**: -0.89% average rate, $1 → $0.99, cumulative change of -0.89%**New York**: -0.97% average rate, $1 → $0.99, cumulative change of -0.97%**Houston, Texas**: -1.26% average rate, $1 → $0.99, cumulative change of -1.26%**Boston, Massachusetts**: -1.94% average rate, $1 → $0.98, cumulative change of -1.94%**Philadelphia, Pennsylvania**: -2.20% average rate, $1 → $0.98, cumulative change of -2.20%**Seattle, Washington**: -2.38% average rate, $1 → $0.98, cumulative change of -2.38%**Chicago, Illinois**: -3.10% average rate, $1 → $0.97, cumulative change of -3.10%**Atlanta, Georgia**: -3.31% average rate, $1 → $0.97, cumulative change of -3.31%**Detroit, Michigan**: -3.49% average rate, $1 → $0.97, cumulative change of -3.49%

San Francisco, California experienced the highest rate of inflation during the 1 years between 1927 and 1928 (-0.89%).

Detroit, Michigan experienced the lowest rate of inflation during the 1 years between 1927 and 1928 (-3.49%).

Note that some locations showing 0% inflation may have not yet reported latest data.

Inflation can also vary widely by country. For comparison, in the UK £1.00 in 1927 would be equivalent to £1.00 in 1928, an absolute change of £0.00 and a cumulative change of 0.00%.

In Canada, CA$1.00 in 1927 would be equivalent to CA$1.01 in 1928, an absolute change of CA$0.01 and a cumulative change of 1.10%.

Compare these numbers to the US's overall absolute change of $-0.02 and total percent change of -1.72%.

CPI is the weighted combination of many categories of spending that are tracked by the government. Breaking down these categories helps explain the main drivers behind price changes. This chart shows the average rate of inflation for select CPI categories between 1927 and 1928.

Compare these values to the overall average of -1.72% per year:

Category | Avg Inflation (%) | Total Inflation (%) | $1 in 1927 → 1928 |
---|---|---|---|

Food and beverages | 0.00 | 0.00 | 1.00 |

Housing | 0.00 | 0.00 | 1.00 |

Apparel | -1.19 | -1.19 | 0.99 |

Transportation | 0.00 | 0.00 | 1.00 |

Medical care | 0.00 | 0.00 | 1.00 |

Recreation | 0.00 | 0.00 | 1.00 |

Education and communication | 0.00 | 0.00 | 1.00 |

Other goods and services | 0.00 | 0.00 | 1.00 |

For all these visualizations, it's important to note that not all categories may have been tracked since 1927. This table and charts use the earliest available data for each category.

Our calculations use the following inflation rate formula to calculate the change in value between 1927 and 1928:

CPI in 1928
CPI in 1927

×

1927 USD value

=

1928 USD value

Then plug in historical CPI values. The U.S. CPI was 17.4 in the year 1927 and 17.1 in 1928:

17.117.4

×

$1

=

$1 in 1927 has the same "purchasing power" or "buying power" as $0.98 in 1928.

To get the total inflation rate for the 1 years between 1927 and 1928, we use the following formula:

CPI in 1928 - CPI in 1927CPI in 1927

×

100

=

Plugging in the values to this equation, we get:

17.1 - 17.417.4

×

100

=

To help put this inflation into perspective, if we had invested $1 in the S&P 500 index in 1927, our investment would be * nominally* worth approximately $2.02 in 1928. This is a return on investment of 102.32%, with an absolute return of $1.02 on top of the original $1.

These numbers are not inflation adjusted, so they are considered *nominal*. In order to evaluate the *real* return on our investment, we must calculate the return with inflation taken into account.

The compounding effect of inflation would account for -1.75% of returns ($-0.04) during this period. This means the inflation-adjusted * real* return of our $1 investment is $1.06. You may also want to account for capital gains tax, which would take your real return down to around $1 for most people.

Original Amount | Final Amount | Change | |
---|---|---|---|

Nominal |
$1 | $2.02 | 102.32% |

RealInflation Adjusted |
$1 | $2.06 | 105.87% |

Information displayed above may differ slightly from other S&P 500 calculators. Minor discrepancies can occur because we use the latest CPI data for inflation, annualized inflation numbers for previous years, and we compute S&P price and dividends from January of 1927 to latest available data for 1928 using average monthly close price.

For more details on the S&P 500 between 1927 and 1928, see the stock market returns calculator.

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

- The counter revolution begins in Shanghai by Kuomintang leader Chiang Kai-shek.
- Charles Lindbergh completes the first non-stop flight over the Atlantic.
- Saudi Arabia is granted its independence from Great Britain after signing the Treaty of Jeddah.

Raw data for these calculations comes from the Bureau of Labor Statistics' Consumer Price Index (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: “Inflation Rate in 1928 | Inflation Calculator.” Official Inflation Data, Alioth Finance, 19 Oct. 2021, https://www.officialdata.org/inflation-rate-in-1928.

Special thanks to QuickChart for their chart image API, which is used for chart downloads.

in2013dollars.com is a reference website maintained by the Official Data Foundation.

Average inflation rate | -1.72% |

Converted amount ($1 base) | $0.98 |

Price difference ($1 base) | $-0.02 |

CPI in 1927 | 17.400 |

CPI in 1928 | 17.100 |

Inflation in 1927 | -1.69% |

Inflation in 1928 | -1.72% |

$1 in 1927 | $0.98 in 1928 |