US Inflation Calculator

What Is Inflation?

Inflation is the rate at which the general level of prices for goods and services rises over time, reducing the purchasing power of money. When inflation runs at 3% per year, a basket of goods that costs $100 today will cost $103 next year. Over decades, this compounding effect is dramatic: $100 in 1950 had the same purchasing power as roughly $1,300 today.

The difference between a nominal dollar amount and its real (inflation-adjusted) value is essential for any meaningful comparison across time. A salary of $10,000 in 1970 was genuinely substantial — the equivalent of over $80,000 today. Without adjusting for inflation, historical financial figures are misleading. This calculator converts any amount between any two years to its real equivalent using official government price data.

How the Consumer Price Index Works

This calculator uses the Consumer Price Index for All Urban Consumers (CPI-U), published by the U.S. Bureau of Labor Statistics. The CPI measures the average change over time in prices paid by urban consumers for a fixed “market basket” of goods and services — including food, housing, apparel, transportation, medical care, recreation, and education. The basket is periodically updated to reflect actual consumer spending patterns.

This calculator uses annual average CPI values rather than monthly figures. Annual averages smooth out seasonal fluctuations and temporary price shocks, giving a more representative figure for each calendar year. The BLS publishes the prior year's annual average each January. Data covers 1913 — the first full year of Federal Reserve operation and the earliest year for which continuous CPI records exist — through the most recent complete year.

How to Use This Calculator

Enter a dollar amount, select a starting year, and select an ending year. The calculator shows the equivalent value in the ending year, the cumulative inflation rate over the period, and the average annual inflation rate. You can adjust any input to instantly recalculate.

Example: To find what a $50,000 salary from 1990 would need to be today to maintain the same purchasing power, enter $50,000, set the from-year to 1990, and the to-year to the current year. The result tells you the minimum salary increase needed just to keep up with inflation — before any real wage growth. This is one of the most common uses for an inflation calculator in personal finance and salary negotiation.

Common Uses

Inflation calculators are used across a wide range of personal, professional, and academic contexts:

• Salary and wage comparisons: Determine whether a pay raise kept up with inflation, or compare compensation across different career eras.
• Historical pricing research:Understand what historical prices for homes, tuition, cars, or consumer goods represent in today's dollars.
• Real wage analysis: Identify periods of genuine purchasing power growth versus inflation-masked stagnation.
• Legal and financial contexts: Courts, attorneys, and accountants frequently convert historical dollar amounts for settlements, estates, and contract disputes.
• Academic and journalistic research: Economists, historians, and journalists use CPI-adjusted figures to make meaningful comparisons across decades.

Frequently Asked Questions

Why does this calculator use annual CPI averages instead of monthly data?

Monthly CPI figures fluctuate due to seasonal patterns and temporary shocks — gasoline prices spike in summer, food prices vary with harvests, and one-time events can distort a single month's reading. Annual averages smooth these fluctuations and provide a more reliable, representative figure for each calendar year. For most comparison purposes — salaries, historical pricing, financial planning — annual averages are the appropriate benchmark.

What is the difference between CPI-U and CPI-W?

CPI-U (All Urban Consumers) covers about 93% of the US population — all urban and metropolitan residents, including professionals, retirees, and the self-employed. CPI-W (Urban Wage Earners and Clerical Workers) covers a narrower subset, roughly 29% of the population, and is used primarily to calculate Social Security cost-of-living adjustments. CPI-U is the broader, more widely cited measure and the standard choice for general inflation calculations.

How accurate is this inflation data?

The BLS CPI-U data is the official US government inflation measure and is widely considered the most authoritative source for historical US price levels. All price index calculations involve methodological choices — how to weight different goods, how to handle quality improvements, and how to account for substitution effects. The BLS updates its methodology periodically. Historical figures before the 1940s are less granular and involve more reconstruction than post-WWII data.

Why does my personal experience of inflation feel higher than the official rate?

The CPI measures average inflation across all urban consumers nationally. Your personal inflation rate depends on what you actually buy. If you spend a higher share of income on housing in an expensive city, or on medical care, or on college tuition — all categories that have risen faster than general CPI — your effective inflation rate will be higher than the headline figure. The official CPI is a useful benchmark, but individual experiences vary significantly by location, income level, and spending pattern.

Dollar Value by Year

Click any year to see the inflation-adjusted value of $100.

Inflation by Period

See how prices changed between any two eras.