$3.50 in 1980 is equivalent in purchasing power to about $11.65 today, an increase of $8.15 over 41 years. The dollar had an average inflation rate of 2.98% per year between 1980 and today, producing a cumulative price increase of 232.90%.

This means that today's prices are 3.33 times higher than average prices since 1980, according to the Bureau of Labor Statistics consumer price index. A dollar today only buys 30.04% of what it could buy back then.

The 1980 inflation rate was 13.50%. The current year-over-year inflation rate (2020 to 2021) is now 5.39%^{1}.
If this number holds, $3.50 today will be equivalent in buying power to $3.69 next year.
The current inflation rate page gives more detail on the latest inflation rates.

Contents

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Cumulative price change | 232.90% |

Average inflation rate | 2.98% |

Converted amount ($3.50 base) | $11.65 |

Price difference ($3.50 base) | $8.15 |

CPI in 1980 | 82.400 |

CPI in 2021 | 274.310 |

Inflation in 1980 | 13.50% |

Inflation in 2021 | 5.39% |

$3.50 in 1980 | $11.65 in 2021 |

This chart shows a calculation of buying power equivalence for $3.50 in 1980 (price index tracking began in 1635).

For example, if you started with $3.50, you would need to end with $11.65 in order to "adjust" for inflation (sometimes refered to as "beating inflation").

When $3.50 is equivalent to $11.65 over time, that means that the "real value" of a single U.S. dollar decreases over time. In other words, a dollar will pay for fewer items at the store.

This effect explains how inflation erodes the value of a dollar over time. By calculating the value in 1980 dollars, the chart below shows how $3.50 is worth less over 41 years.

According to the Bureau of Labor Statistics, each of these USD amounts below is equal in terms of what it could buy at the time:

This conversion table shows various other 1980 amounts in today's dollars, based on the 232.90% change in prices:

Initial value | Equivalent value |
---|---|

$1 dollar in 1980 | $3.33 dollars today |

$5 dollars in 1980 | $16.65 dollars today |

$10 dollars in 1980 | $33.29 dollars today |

$50 dollars in 1980 | $166.45 dollars today |

$100 dollars in 1980 | $332.90 dollars today |

$500 dollars in 1980 | $1,664.50 dollars today |

$1,000 dollars in 1980 | $3,329.00 dollars today |

$5,000 dollars in 1980 | $16,645.02 dollars today |

$10,000 dollars in 1980 | $33,290.05 dollars today |

$50,000 dollars in 1980 | $166,450.24 dollars today |

$100,000 dollars in 1980 | $332,900.49 dollars today |

$500,000 dollars in 1980 | $1,664,502.43 dollars today |

$1,000,000 dollars in 1980 | $3,329,004.85 dollars today |

Inflation can vary widely by city, even within the United States. Here's how some cities fared in 1980 to 2021 (figures shown are purchasing power equivalents of $3.50):

**San Francisco, California**: 3.34% average rate, $3.50 → $13.44, cumulative change of 284.01%**Boston, Massachusetts**: 3.13% average rate, $3.50 → $12.40, cumulative change of 254.40%**New York**: 3.13% average rate, $3.50 → $12.40, cumulative change of 254.36%**Seattle, Washington**: 3.13% average rate, $3.50 → $12.39, cumulative change of 253.93%**Miami-Fort Lauderdale, Florida**: 3.08% average rate, $3.50 → $12.14, cumulative change of 246.74%**Atlanta, Georgia**: 2.89% average rate, $3.50 → $11.27, cumulative change of 221.90%**Philadelphia, Pennsylvania**: 2.86% average rate, $3.50 → $11.14, cumulative change of 218.29%**Dallas-Fort Worth, Texas**: 2.78% average rate, $3.50 → $10.77, cumulative change of 207.78%**Chicago, Illinois**: 2.77% average rate, $3.50 → $10.75, cumulative change of 207.16%**Detroit, Michigan**: 2.60% average rate, $3.50 → $10.04, cumulative change of 186.84%**Houston, Texas**: 2.60% average rate, $3.50 → $10.03, cumulative change of 186.46%

San Francisco, California experienced the highest rate of inflation during the 41 years between 1980 and 2021 (3.34%).

Houston, Texas experienced the lowest rate of inflation during the 41 years between 1980 and 2021 (2.60%).

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 £3.50 in 1980 would be equivalent to £15.40 in 2021, an absolute change of £11.90 and a cumulative change of 339.88%.

In Canada, CA$3.50 in 1980 would be equivalent to CA$10.41 in 2021, an absolute change of CA$6.91 and a cumulative change of 197.40%.

Compare these numbers to the US's overall absolute change of $8.15 and total percent change of 232.90%.

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 1980 and 2021.

Compare these values to the overall average of 2.98% per year:

Category | Avg Inflation (%) | Total Inflation (%) | $3.50 in 1980 → 2021 |
---|---|---|---|

Food and beverages | 2.85 | 216.09 | 11.06 |

Housing | 3.06 | 243.84 | 12.03 |

Apparel | 0.69 | 32.46 | 4.64 |

Transportation | 2.47 | 172.10 | 9.52 |

Medical care | 4.86 | 599.94 | 24.50 |

Recreation | 1.13 | 58.72 | 5.56 |

Education and communication | 1.83 | 110.48 | 7.37 |

Other goods and services | 4.59 | 529.49 | 22.03 |

The graph below compares inflation in categories of goods over time. Click on a category such as "Food" to toggle it on or off:

For all these visualizations, it's important to note that not all categories may have been tracked since 1980. 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 1980 and today:

CPI today
CPI in 1980

×

1980 USD value

=

Today's value

Then plug in historical CPI values. The U.S. CPI was 82.4 in the year 1980 and 274.31 in 2021:

274.3182.4

×

$3.50

=

$3.50 in 1980 has the same "purchasing power" or "buying power" as $11.65 in 2021.

To get the total inflation rate for the 41 years between 1980 and 2021, we use the following formula:

CPI in 2021 - CPI in 1980CPI in 1980

×

100

=

Plugging in the values to this equation, we get:

274.31 - 82.482.4

×

100

=

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 3.04% per year between 1980 and 2021 (vs all-CPI inflation of 2.98%), for an inflation total of 240.93%.

When using the core inflation measurement, $3.50 in 1980 is equivalent in buying power to $11.93 in 2021, a difference of $8.43. Recall that for All Items, the converted amount is $11.65 with a difference of $8.15.

In 1980, core inflation was 12.42%.

The average inflation rate of 2.98% has a compounding effect between 1980 and 2021. As noted above, this yearly inflation rate compounds to produce an overall price difference of 232.90% over 41 years.

To help put this inflation into perspective, if we had invested $3.50 in the S&P 500 index in 1980, our investment would be * nominally* worth approximately $408.64 in 2021. This is a return on investment of 11,575.29%, with an absolute return of $405.14 on top of the original $3.50.

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 0.00% of returns ($0.00) during this period. This means the inflation-adjusted * real* return of our $3.50 investment is $0.00. You may also want to account for capital gains tax, which would take your real return down to around $0 for most people.

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

Nominal |
$3.50 | $408.64 | 11,575.29% |

RealInflation Adjusted |
$3.50 | $0.00 | 0.00% |

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 1980 to latest available data for 2021 using average monthly close price.

For more details on the S&P 500 between 1980 and 2021, see the stock market returns calculator.

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

- Princess Victoria is crowned Princess of Sweden.
- Iranian protesters storm the Russian embassy in Iran.
- Abdou Diouf is elected president of Senegal after being Prime Minister for ten years.
- Cable News Network (CNN) is transmitted for the first time.
- Saddam Hussein, President of Iraq, declares a holy war on Iran.

You may use the following MLA citation for this page: “$3.50 in 1980 → 2021 | Inflation Calculator.” Official Inflation Data, Alioth Finance, 19 Oct. 2021, https://www.officialdata.org/us/inflation/1980?amount=3.50&endYear=2021.

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.

Cumulative price change | 232.90% |

Average inflation rate | 2.98% |

Converted amount ($3.50 base) | $11.65 |

Price difference ($3.50 base) | $8.15 |

CPI in 1980 | 82.400 |

CPI in 2021 | 274.310 |

Inflation in 1980 | 13.50% |

Inflation in 2021 | 5.39% |

$3.50 in 1980 | $11.65 in 2021 |