$1 in 1970 is worth $1.04 in 1971

Value of $1 from 1970 to 1971

$1 in 1970 is equivalent in purchasing power to about $1.04 in 1971. The dollar had an average inflation rate of 4.38% per year between 1970 and 1971, producing a cumulative price increase of 4.38%.

This means that prices in 1971 are 1.04 times higher than average prices since 1970, according to the Bureau of Labor Statistics consumer price index.

The 1970 inflation rate was 5.72%. The inflation rate in 1971 was 4.38%. The 1971 inflation rate is higher compared to the average inflation rate of 3.92% per year between 1971 and 2021.

Inflation from 1970 to 1971
Average inflation rate 4.38%
Converted amount ($1 base) $1.04
Price difference ($1 base) $0.04
CPI in 1970 38.800
CPI in 1971 40.500
Inflation in 1970 5.72%
Inflation in 1971 4.38%
$1 in 1970 $1.04 in 1971

USD Inflation since 1913
Annual Rate, the Bureau of Labor Statistics CPI

Inflation by City

Inflation can vary widely by city, even within the United States. Here's how some cities fared in 1970 to 1971 (figures shown are purchasing power equivalents of $1):

New York experienced the highest rate of inflation during the 1 years between 1970 and 1971 (5.79%).

Seattle, Washington experienced the lowest rate of inflation during the 1 years between 1970 and 1971 (2.19%).

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

Inflation by Country

Inflation can also vary widely by country. For comparison, in the UK £1.00 in 1970 would be equivalent to £1.09 in 1971, an absolute change of £0.09 and a cumulative change of 9.44%.

In Canada, CA$1.00 in 1970 would be equivalent to CA$1.05 in 1971, an absolute change of CA$0.05 and a cumulative change of 4.93%.

Compare these numbers to the US's overall absolute change of $0.04 and total percent change of 4.38%.

Inflation by Spending Category

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 1970 and 1971.

Compare these values to the overall average of 4.38% per year:

Category Avg Inflation (%) Total Inflation (%) $1 in 1970 → 1971
Food and beverages 3.12 3.12 1.03
Housing 4.45 4.45 1.04
Apparel 3.24 3.24 1.03
Transportation 5.25 5.25 1.05
Medical care 6.46 6.46 1.06
Recreation 0.00 0.00 1.00
Education and communication 0.00 0.00 1.00
Other goods and services 4.74 4.74 1.05

For all these visualizations, it's important to note that not all categories may have been tracked since 1970. This table and charts use the earliest available data for each category.

How to Calculate Inflation Rate for $1, 1970 to 1971

Our calculations use the following inflation rate formula to calculate the change in value between 1970 and 1971:

CPI in 1971 CPI in 1970
1970 USD value
1971 USD value

Then plug in historical CPI values. The U.S. CPI was 38.8 in the year 1970 and 40.5 in 1971:


$1 in 1970 has the same "purchasing power" or "buying power" as $1.04 in 1971.

To get the total inflation rate for the 1 years between 1970 and 1971, we use the following formula:

CPI in 1971 - CPI in 1970CPI in 1970
Cumulative inflation rate (1 years)

Plugging in the values to this equation, we get:

40.5 - 38.838.8

Alternate Measurements of Inflation

The above data describe the CPI for all items. Also of note is the Core CPI, which measures inflation for all items except for the more volatile categories of food and energy. Core inflation averaged 4.69% per year between 1970 and 1971 (vs all-CPI inflation of 4.38%), for an inflation total of 4.69%.

When using the core inflation measurement, $1 in 1970 is equivalent in buying power to $1.05 in 1971, a difference of $0.05. Recall that for All Items, the converted amount is $1.04 with a difference of $0.04.

In 1970, core inflation was 6.25%.

Comparison to S&P 500 Index

To help put this inflation into perspective, if we had invested $1 in the S&P 500 index in 1970, our investment would be nominally worth approximately $1.23 in 1971. This is a return on investment of 22.60%, with an absolute return of $0.23 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 4.20% of returns ($0.05) during this period. This means the inflation-adjusted real return of our $1 investment is $0.17. You may also want to account for capital gains tax, which would take your real return down to around $0 for most people.

Investment in S&P 500 Index, 1970-1971
Original Amount Final Amount Change
Nominal $1 $1.23 22.60%
Inflation Adjusted
$1 $1.17 17.45%

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 1970 to latest available data for 1971 using average monthly close price.

For more details on the S&P 500 between 1970 and 1971, see the stock market returns calculator.

News headlines from 1970

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

  • January 1st, 1970 established as Epoch time for UNIX systems.
  • Rhodesia declares independence and sets up a republican government.
  • Aswan Dam opens in Egypt to prevent flooding of the Nile River.
  • A Palestinian terrorist organization hijacks three aircrafts in an incident that is later known as Black September.

Data Source & Citation

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: “$1 in 1970 → 1971 | Inflation Calculator.” Official Inflation Data, Alioth Finance, 29 Nov. 2021, https://www.officialdata.org/us/inflation/1970?amount=1&endYear=1971.

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

Ian Webster

About the author

Ian Webster is an engineer and data expert based in San Mateo, California. He has worked for Google, NASA, and consulted for governments around the world on data pipelines and data analysis. Disappointed by the lack of clear resources on the impacts of inflation on economic indicators, Ian believes this website serves as a valuable public tool. Ian earned his degree in Computer Science from Dartmouth College.

Email · LinkedIn · Twitter

» Read more about inflation and investment.

Inflation from 1970 to 1971
Average inflation rate 4.38%
Converted amount ($1 base) $1.04
Price difference ($1 base) $0.04
CPI in 1970 38.800
CPI in 1971 40.500
Inflation in 1970 5.72%
Inflation in 1971 4.38%
$1 in 1970 $1.04 in 1971