Inflation Calculator: US CPI Data & Purchasing Power

Understand the impact of inflation on your money with our comprehensive Inflation Calculator. Whether you want to explore over 100 years of US historical data or project future purchasing power based on a fixed rate, this tool provides real-time, accurate estimations.

Historical US Inflation (1913-2026)

Our calculator uses official Consumer Price Index (CPI-U) data from the Bureau of Labor Statistics (BLS) to calculate the value of a dollar from 1913 to today, including projections for 2025 and 2026.

• Explore Historical Values: See what $100 from 1913 would be worth in today's market.
• Track Buying Power: Understand how major historical events (wars, depressions, booms) impacted the value of the US dollar.
• Average Annual Rates: Automatically calculate the compound average growth rate of inflation over any period.

Forward & Backward Inflation Projections

Planning for the future or analyzing historical investments with a flat rate? Our specialized modes allow you to:

1. Forward Flat Rate: Estimate what your current savings will be worth in 10, 20, or 50 years assuming a constant inflation rate (e.g., the Fed's 2% target).
2. Backward Flat Rate: Calculate what a specific amount today was equivalent to in the past based on a fixed percentage rate.

Why Use This Inflation Calculator?

• Exhaustive Data: Over a century of annual average CPI data built directly into the tool.
• Interactive Visualization: Visualize the erosion (or gain) of purchasing power over time with a dynamic trend chart.
• Real-Time Updates: See results instantly as you adjust years, amounts, or rates.
• Multiple Currencies: While based on US CPI, the flat rate modes can be used for any currency.

Understanding Inflation & CPI

Inflation is the rate at which the general level of prices for goods and services is rising. As inflation rises, every dollar you own buys a smaller percentage of a good or service. The Consumer Price Index (CPI) is the most common measure of inflation, tracking the price changes of a representative "basket" of consumer goods.

Disclaimer: Historical data is based on official BLS reports. Future projections are estimates and should not be used for critical financial planning.