$20 in 2009 is worth $27.25 today

Buying power of $20 in 2009

This chart shows a calculation of buying power equivalence for $20 in 2009 (price index tracking began in 1635).

For example, if you started with $20, you would need to end with $27.25 in order to "adjust" for inflation (sometimes refered to as "beating inflation").

When $20 is equivalent to $27.25 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 2009 dollars, the chart below shows how $20 is worth less over 13 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 2009 amounts in today's dollars, based on the 36.25% change in prices:

Inflation by City

Inflation can vary widely by city, even within the United States. Here's how some cities fared in 2009 to 2022 (figures shown are purchasing power equivalents of $20):

• San Diego, California: 2.88% average rate, $20 → $28.13, cumulative change of 40.63%
• San Francisco, California: 2.78% average rate, $20 → $28.58, cumulative change of 42.88%
• Atlanta, Georgia: 2.57% average rate, $20 → $27.83, cumulative change of 39.14%
• Denver, Colorado: 2.54% average rate, $20 → $27.03, cumulative change of 35.15%
• Seattle, Washington: 2.47% average rate, $20 → $27.48, cumulative change of 37.40%
• Miami-Fort Lauderdale, Florida: 2.41% average rate, $20 → $27.27, cumulative change of 36.37%
• Tampa, Florida: 2.25% average rate, $20 → $26.11, cumulative change of 30.57%
• Dallas-Fort Worth, Texas: 2.24% average rate, $20 → $26.66, cumulative change of 33.32%
• Phoenix, Arizona: 2.22% average rate, $20 → $26.03, cumulative change of 30.16%
• Boston, Massachusetts: 2.17% average rate, $20 → $26.44, cumulative change of 32.20%
• Houston, Texas: 2.15% average rate, $20 → $26.36, cumulative change of 31.81%
• Minneapolis-St Paul, Minnesota: 2.05% average rate, $20 → $25.52, cumulative change of 27.59%
• New York: 1.96% average rate, $20 → $25.73, cumulative change of 28.65%
• Detroit, Michigan: 1.90% average rate, $20 → $25.54, cumulative change of 27.71%
• Chicago, Illinois: 1.89% average rate, $20 → $25.52, cumulative change of 27.61%
• Philadelphia, Pennsylvania: 1.82% average rate, $20 → $25.28, cumulative change of 26.40%
• St Louis, Missouri: 1.66% average rate, $20 → $24.38, cumulative change of 21.90%

San Diego, California experienced the highest rate of inflation during the 13 years between 2009 and 2022 (2.88%).

St Louis, Missouri experienced the lowest rate of inflation during the 13 years between 2009 and 2022 (1.66%).

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 £20.00 in 2009 would be equivalent to £28.59 in 2022, an absolute change of £8.59 and a cumulative change of 42.93%.

In Canada, CA$20.00 in 2009 would be equivalent to CA$25.17 in 2022, an absolute change of CA$5.17 and a cumulative change of 25.84%.

Compare these numbers to the US's overall absolute change of $7.25 and total percent change of 36.25%.

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.

Between 2009 and 2022:

• Gas prices increased from $1.79 per gallon to $4.60
• Bread prices increased from $1.38 per loaf to $1.61
• Egg prices increased from $1.85 per carton to $2.86
• Chicken prices increased from $1.29 per per 1 lb of whole chicken to $1.82
• Electricity prices increased from $0.13 per KwH to $0.15

This chart shows the average rate of inflation for select CPI categories between 2009 and 2022.

Compare these values to the overall average of 2.41% per year:

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 2009. This table and charts use the earliest available data for each category.

How to calculate inflation rate for $20 since 2009

Our calculations use the following inflation rate formula to calculate the change in value between 2009 and today:

Then plug in historical CPI values. The U.S. CPI was 214.537 in the year 2009 and 292.296 in 2022:

$20 in 2009 has the same "purchasing power" or "buying power" as $27.25 in 2022.

To get the total inflation rate for the 13 years between 2009 and 2022, we use the following formula:

Plugging in the values to this equation, we get:

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 2.16% per year between 2009 and 2022 (vs all-CPI inflation of 2.41%), for an inflation total of 31.98%.

When using the core inflation measurement, $20 in 2009 is equivalent in buying power to $26.40 in 2022, a difference of $6.40. Recall that for All Items, the converted amount is $27.25 with a difference of $7.25.

In 2009, core inflation was 1.70%.

Chained CPI is an alternative measurement that takes into account how consumers adjust spending for similar items. Chained inflation averaged 2.00% per year between 2009 and 2022, a total inflation amount of 29.44%.

According to the Chained CPI measurement, $20 in 2009 is equal in buying power to $25.89 in 2022, a difference of $5.89 (versus a converted amount of $27.25/change of $7.25 for All Items).

In 2009, chained inflation was -0.47%.

Comparison to S&P 500 Index

The average inflation rate of 2.41% has a compounding effect between 2009 and 2022. As noted above, this yearly inflation rate compounds to produce an overall price difference of 36.25% over 13 years.

To help put this inflation into perspective, if we had invested $20 in the S&P 500 index in 2009, our investment would be nominally worth approximately $124.98 in 2022. This is a return on investment of 524.90%, with an absolute return of $104.98 on top of the original $20.

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 26.60% of returns ($33.25) during this period. This means the inflation-adjusted real return of our $20 investment is $71.73. You may also want to account for capital gains tax, which would take your real return down to around $61 for most people.

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 2009 to latest available data for 2022 using average monthly close price.

For more details on the S&P 500 between 2009 and 2022, see the stock market returns calculator.

Data source & citation

Raw data for these calculations comes from the Bureau of Labor Statistics' Consumer Price Index (CPI), established in 1913. Inflation data from 1634 to 1912 is sourced from a historical study conducted by political science professor Robert Sahr at Oregon State University and from the American Antiquarian Society.

» Read more about inflation and investment.