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# U.S. inflation rate in 1787: -2.11%

### Inflation in 1787 and Its Effect on Dollar Value

Purchasing power increased by 2.11% in 1787 compared to 1786. On average, you would have to spend 2.11% less money in 1787 than in 1786 for the same item. This is an example of deflation.

In other words, \$1 in 1786 is equivalent in purchasing power to about \$0.98 in 1787.

The 1786 inflation rate was -2.06%. The inflation rate in 1787 was -2.11%. The 1787 inflation rate is lower compared to the average inflation rate of 1.44% per year between 1787 and 2019.

Inflation rate is calculated by change in the consumer price index (CPI). The CPI in 1787 was 9.30. It was 9.50 in the previous year, 1786. The difference in CPI between the years is used by the Bureau of Labor Statistics to officially determine inflation. Because the 1787 CPI is less than 1786 CPI, negative inflation (also known as deflation) has occurred.

 Average inflation rate -2.11% Converted amount (\$1 base) \$0.98 Price difference (\$1 base) \$-0.02 CPI in 1786 9.500 CPI in 1787 9.300 Inflation in 1786 -2.06% Inflation in 1787 -2.11%

### Inflation by Country

Inflation can also vary widely by country. For comparison, in the UK £1.00 in 1786 would be equivalent to £1.00 in 1787, an absolute change of £0.00 and a cumulative change of 0.00%.

Compare these numbers to the US's overall absolute change of \$-0.02 and total percent change of -2.11%.

### Inflation by Spending Category

CPI is the weighted combination of many categories of spending that are tracked by the government. This chart shows the average rate of inflation for select CPI categories between 1786 and 1787.

Compare these values to the overall average of -2.11% per year:

Category Avg Inflation (%) Total Inflation (%) \$1 in 1786 → 1787
Food 0.00 0.00 1.00
Shelter 0.00 0.00 1.00
Energy 0.00 0.00 1.00
Apparel 0.00 0.00 1.00
New vehicles 0.00 0.00 1.00
Used cars and trucks 0.00 0.00 1.00
Transportation services 0.00 0.00 1.00
Medical care services 0.00 0.00 1.00
Medical care commodities 0.00 0.00 1.00

It's important to note that not all categories may be tracked since 1786. This table and visualization use the earliest available data for each category.

### How to Calculate Inflation Rate for \$1, 1786 to 1787

This inflation calculator uses the following inflation rate formula:

CPI in 1787CPI in 1786
×
1786 USD value
=
1787 USD value

Then plug in historical CPI values. The U.S. CPI was 9.5 in the year 1786 and 9.3 in 1787:

9.39.5
×
\$1
=
\$0.98

\$1 in 1786 has the same "purchasing power" or "buying power" as \$0.98 in 1787.

To get the total inflation rate for the 1 years between 1786 and 1787, we use the following formula:

CPI in 1787 - CPI in 1786CPI in 1786
×
100
=
Cumulative inflation rate (1 years)

Plugging in the values to this equation, we get:

9.3 - 9.59.5
×
100
=
-2%

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

• 100,000 people are killed by the collapsing of the landslide dam on the Dadu River in China.
• Silver dollar and decimal system of money adopted by United States Congress
• Grand Duke of Tuscany Leopold II announces the Penal reform act which abolishes the death penalty.

### 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: “Inflation Rate in 1787 | Inflation Calculator.” U.S. Official Inflation Data, Alioth Finance, 23 Oct. 2019, https://www.officialdata.org/inflation-rate-in-1787.