US CPI inflation calculator

What is inflation?

Inflation is the rate at which the general level of prices for goods and services rises over time, eroding the purchasing power of money. When inflation is 3%, something that cost $100 last year costs $103 today. Over decades, the effect is dramatic.

This calculator uses the US Consumer Price Index (CPI), published by the Bureau of Labor Statistics. The CPI tracks the average change in prices paid by urban consumers for a representative basket of goods and services.

How this CPI price calculator works

This CPI price calculator takes a dollar amount, a starting year, and an ending year, then scales the amount by the ratio of the Consumer Price Index in those two years. In plain English, it asks: if prices on average were lower in the starting year and higher in the ending year, how much money would you need in the ending year to buy the same basket of goods and services?

That is why the tool works well for questions like "What is $1,000 from 1990 worth today?", "How much inflation has happened since 2000?", or "What is the equivalent buying power of this salary in another year?" It is effectively a US CPI inflation calculator based on annual CPI averages rather than a single monthly reading.

The real impact of inflation

Approximate values based on US CPI data. Actual figures vary by exact month used.

What CPI measures and why it matters

CPI stands for Consumer Price Index. In the United States it is published by the US Bureau of Labor Statistics and tracks average price changes for a broad basket of goods and services bought by urban consumers. Because it is the standard inflation benchmark used across wages, contracts, benefits, and historical comparisons, many people search specifically for a "US Bureau of Labor Statistics CPI inflation calculator" or "CPI calculator US" when they want a trusted inflation adjustment.

CPI is useful because nominal prices by themselves can be misleading. A salary, rent payment, stock gain, or home price from decades ago cannot be compared fairly to a modern dollar amount unless both are adjusted into the same year. This tool does that conversion so you can compare real purchasing power rather than raw sticker prices.

Common uses for an inflation calculator

The most common use is comparing past prices to present prices. If you see that a home cost $80,000 in 1985, a car cost $12,000 in 1995, or tuition was $5,000 in 2001, this calculator tells you what those figures mean in today's dollars. It is also useful for reviewing old salaries, pension benefits, settlement amounts, spending records, and business budgets in real terms.

Another common use is evaluating investment performance. If an investment doubled over a long period but inflation also rose substantially, the real gain may be much smaller than the nominal gain. By translating past values into current dollars, you can see whether your money truly gained purchasing power or simply kept up with rising prices.

Limits of CPI-based inflation comparisons

CPI is the best-known broad inflation measure in the US, but it is still an average. Your personal cost of living may rise faster or slower depending on where you live and what you spend money on. Housing, healthcare, education, childcare, and energy costs do not always move in line with the overall CPI basket.

This calculator also uses annual CPI averages, which are ideal for long-range comparisons but not for exact month-to-month contract indexing. If you need legal or accounting precision tied to a specific month, you should use the exact BLS monthly series for that period. For everyday "what is this worth in today's money?" questions, annual averages are usually the right level of detail.