Finance

Inflation Calculator

See how inflation changes the purchasing power of your money. Compare prices across any years from 1920 to 2026 using historical CPI data.

Quick Answer

Inflation is measured by the Consumer Price Index (CPI), which tracks price changes in a basket of goods and services. The U.S. average annual inflation rate is approximately 3.2% over the last century. At 3% annual inflation, $100 today will have the purchasing power of only $74 in 10 years, and prices double roughly every 23 years.

Purchasing Power Comparison

Amount

Start Year

End Year

Results

$100 in 2000 =

$190.48

in 2026 dollars

Cumulative Inflation

90.48%

over 26 years

Avg. Annual Inflation

2.51%

per year

What Did Prices Look Like?

Item	~2000	~2026
Gallon of Milk	$2.78/gal	$4.25/gal
Movie Ticket	$5.39	$11.50
Gallon of Gas	$1.51/gal	$3.40/gal
Median Home	$119,600	$420,000
Median Income	$41,990	$79,000

Prices are approximate averages for the closest decade. Sources: BLS, Census Bureau, NAHB.

Future Purchasing Power

If inflation continues at a given rate, how much will your money be worth in the future?

Amount Today

Inflation Rate

Years from Now

$100 today will buy only

$74.41

worth of goods in 10 years

Purchasing Power Loss

25.6%

over 10 years at 3%

Salary Purchasing Power

How much should your salary be today to maintain the same purchasing power?

Your Salary

Salary Year

Should Be Today (2026)

$101,391

Raise Needed

+$21,391

to maintain purchasing power

About This Tool

The Inflation Calculator uses historical Consumer Price Index (CPI) data from the U.S. Bureau of Labor Statistics to show how the purchasing power of the dollar has changed over time. Enter any amount and compare its value across years from 1920 to 2026.

What Is CPI and How Is Inflation Measured?

The Consumer Price Index (CPI) measures the average change in prices paid by urban consumers for a basket of goods and services. The Bureau of Labor Statistics (BLS) tracks about 80,000 items monthly across 75 urban areas. Categories include housing (which makes up about 34% of CPI), food, transportation, medical care, education, and recreation. The annual percentage change in CPI is what most people refer to as "the inflation rate."

Why Inflation Matters for Your Savings

Inflation silently erodes your purchasing power. Money sitting in a checking account earning 0.01% interest is losing value every year. At 3% annual inflation, $100,000 in cash will have the purchasing power of only about $74,000 after 10 years. This is why investing — ideally at returns that exceed inflation — is essential for preserving and growing wealth.

Historical Inflation Trends

The U.S. has experienced widely varying inflation rates: deflation during the Great Depression (1930s), post-war spikes (1940s), double-digit inflation in the late 1970s and early 1980s, low and stable inflation from 1990-2020, and a sharp spike in 2021-2023 driven by pandemic-era supply chain disruptions and fiscal stimulus. The Federal Reserve targets 2% annual inflation as its long-term goal.

Real vs. Nominal Returns

Nominal returns are the raw percentage your investments earn. Real returns subtract inflation. If your portfolio returned 10% in a year with 3% inflation, your real return was approximately 7%. When comparing investment performance across decades, always use real returns to get an accurate picture of actual wealth growth.

For practical strategies to protect your finances from rising prices, read our complete guide: Inflation and Your Money.

Frequently Asked Questions

What is inflation and why does it happen?

Inflation is the general increase in prices over time, which reduces the purchasing power of money. It happens due to a combination of factors: increased money supply (monetary inflation), rising production costs (cost-push inflation), increased consumer demand (demand-pull inflation), and supply chain disruptions. Central banks like the Federal Reserve target moderate inflation (about 2% per year) because mild inflation encourages spending and investment, while deflation can be economically destructive.

How accurate is CPI as a measure of inflation?

CPI is the most widely used inflation measure but has known limitations. Critics argue it may overstate inflation because it doesn't fully account for product quality improvements, or understate it because it may not reflect the actual spending patterns of all consumers. The BLS uses hedonic quality adjustment and substitution weighting to address some concerns. Alternative measures like PCE (Personal Consumption Expenditures) and Chained CPI exist. For personal financial planning, CPI remains the standard benchmark.

What was the highest inflation rate in US history?

The highest peacetime inflation occurred in 1980 when the annual CPI rate reached 13.5%, driven by oil price shocks and expansionary monetary policy. During World War II and its aftermath (1942-1948), inflation also exceeded 10% in several years. More recently, inflation peaked at 9.1% in June 2022, the highest in 40 years, driven by pandemic-related supply disruptions and strong consumer demand. The Federal Reserve responded with aggressive interest rate hikes.

How does inflation affect my investments?

Inflation affects different investments differently. Cash and bonds with fixed interest rates lose purchasing power during high inflation. Stocks historically outpace inflation over long periods, with the S&P 500 averaging about 7% real returns. Real estate and commodities often serve as inflation hedges. Treasury Inflation-Protected Securities (TIPS) are designed to keep pace with CPI. The key principle: your investments need to earn more than the inflation rate to grow in real terms.

Should I adjust my salary for inflation every year?

Yes. If your salary doesn't increase at least at the rate of inflation, you are effectively taking a pay cut in real terms. For example, if inflation is 3% and you get a 2% raise, your purchasing power actually decreased by about 1%. When negotiating compensation, consider the total CPI increase since your last raise. This calculator's salary mode shows exactly how much your salary should be to maintain purchasing power.

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