If you have a BBInfinite module that fits a Campagnolo UltraTorque crank set of any kind, you need the 6805N bearings. This bearing set ships a tube of Vibratite530 retaining compound.

Inflation can also vary widely by country. For comparison, in the UK £960.00 in 1920 would be equivalent to £54,832.94 in 2025, an absolute change of £53,872.94 and a cumulative change of 5,611.77%.

This effect explains how inflation erodes the value of a dollar over time. By calculating the value in 1920 dollars, the chart below shows how $960 is worth less over 105 years.

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.

For example, if you started with $960, you would need to end with $15,143.66 in order to "adjust" for inflation (sometimes refered to as "beating inflation").

If you have a BBInfinite bottom bracket that fits a 30mm or DUB spindle crank set, road or MTB, and the frame shell diameter is 46mm, you need the 6806 bearings. All 6806 kits ship with a set of bearings, two alloy bearing shields, stainless steel snap rings for BB30 applications, and a tube of Vibratite530 retaining compound.

To help put this inflation into perspective, if we had invested $960 in the S&P 500 index in 1920, our investment would be nominally worth approximately $34,499,326.69 in 2025. This is a return on investment of 3,593,579.86%, with an absolute return of $34,498,366.69 on top of the original $960.

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.

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.

You may use the following MLA citation for this page: “$960 in 1920 → 2025 | Inflation Calculator.” Official Inflation Data, Alioth Finance, 2 Jan. 2025, https://www.officialdata.org/us/inflation/1920?amount=960.

If you have a BBInfinite module that fits a 30mm or DUB spindle crank set, road or MTB, and the frame shell diameter is 41mm or 42mm, you need the 4030 bearings. This bearing set ships with one pair of bearing shields and a tube of VibraTite530 retaining compound.

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 1920 to latest available data for 2025 using average monthly close price.

When $960 is equivalent to $15,143.66 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.

Inflation can vary widely by city, even within the United States. Here's how some cities fared in 1920 to 2025 (figures shown are purchasing power equivalents of $960):

The inflation rate in 1920 was 15.61%. The current inflation rate compared to the end of last year is now 2.75%. If this number holds, $960 today will be equivalent in buying power to $986.39 next year. The current inflation rate page gives more detail on the latest inflation rates.

Investment in S&P 500 Index, 1920-2025Original AmountFinal AmountChangeNominal$960$34,499,326.693,593,579.86%RealInflation Adjusted$960$2,187,010.60227,713.60%

$960 in 1920 is equivalent in purchasing power to about $15,143.66 today, an increase of $14,183.66 over 105 years. The dollar had an average inflation rate of 2.66% per year between 1920 and today, producing a cumulative price increase of 1,477.47%.

Raw data for these calculations comes from the Bureau of Labor Statistics' Consumer Price Index (CPI), established in 1913. Price index data from 1774 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. Price index data from 1634 to 1773 is from the American Antiquarian Society, using British pound equivalents.

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:

If you have a BBInfinite module that fits a Shimano HollowTech II crank set of any kind, road or MTB, you need the 6805 bearings. This bearing set ships with one pair of polymer "top hat" shields and a tube of Vibratite530 retaining compound.

In Canada, CA$960.00 in 1920 would be equivalent to CA$13,675.25 in 2025, an absolute change of CA$12,715.25 and a cumulative change of 1,324.50%.

If you have a BBInfinite module that fits a Gxp crank set of any kind, road or MTB, you need the 6805 bearings. This bicycle wheel bearing set ships with one pair of polymer "top hat" shields and a tube of Vibratite530 retaining compound.

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 1920. This table and charts use the earliest available data for each category.

This means that today's prices are 15.77 times as high as average prices since 1920, according to the Bureau of Labor Statistics consumer price index. A dollar today only buys 6.339% of what it could buy back then.

The average inflation rate of 2.66% has a compounding effect between 1920 and 2025. As noted above, this yearly inflation rate compounds to produce an overall price difference of 1,477.47% over 105 years.

The compounding effect of inflation would account for 93.66% of returns ($32,312,316.10) during this period. This means the inflation-adjusted real return of our $960 investment is $2,186,050.60. You may also want to account for capital gains tax, which would take your real return down to around $1,858,143 for most people.