Calculate the inflation-adjusted value between any two months. Includes charts, tables, and live official CPI index data.
| Month | Index | Inflation vs Start | Adjusted Amount |
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Inflation is the silent tax that erodes the purchasing power of your money over time. A dollar in 1990 is worth about 43 cents today in terms of what it can buy. A salary that stays flat for 5 years during 4% annual inflation is effectively an 18% pay cut in real terms.
This free inflation calculator uses official US Consumer Price Index (CPI) data from the Bureau of Labor Statistics (BLS) to show you exactly what any amount of money is worth in today's dollars, how much buying power has been lost, and how inflation affects everything from your savings to your retirement.
Inflation is the rate at which the general level of prices for goods and services rises over time, which corresponds to a fall in purchasing power. The primary measure of inflation in the US is the Consumer Price Index (CPI), published monthly by the BLS.
The CPI tracks the price of a "basket" of commonly purchased goods and services — food, housing, transportation, medical care, education, clothing, and more. A 5% CPI increase means that basket now costs 5% more than a year ago.
The Personal Consumption Expenditures (PCE) Price Index, published by the Bureau of Economic Analysis, is the Federal Reserve's preferred inflation measure and tends to run slightly lower than CPI. The Fed's official inflation target is 2% PCE annually, which they consider price stability. Official CPI data is published at BLS.gov.
To calculate how much a past amount is worth in today's dollars: Adjusted value = Original amount × (Current CPI ÷ Past CPI). For example, $1,000 in January 2000 (CPI ≈ 168.8) adjusted to 2025 dollars (CPI ≈ 315): $1,000 × (315 ÷ 168.8) = $1,866. Meaning, you'd need $1,866 today to have the same purchasing power as $1,000 in 2000.
Our calculator applies this formula automatically using historical BLS CPI data for any year range you choose.
To give you a sense of cumulative inflation over time (approximate figures based on CPI data): $100 in 1980 = approximately $355 in 2025 | $100 in 1990 = approximately $233 in 2025 | $100 in 2000 = approximately $175 in 2025 | $100 in 2010 = approximately $140 in 2025 | $100 in 2020 = approximately $124 in 2025.
The sharp inflation of 2021–2023 (peaking at 9.1% in June 2022, the highest since 1981) accelerated the erosion of purchasing power significantly compared to the low-inflation decade of 2010–2020.
A salary increase that matches or exceeds inflation keeps your purchasing power intact — a salary increase below inflation is effectively a pay cut. Example: you earned $65,000 in 2019 and still earn $70,000 in 2025 (a 7.7% nominal raise).
With cumulative inflation of approximately 24% from 2019 to 2025, your real purchasing power in 2025 dollars is actually lower than in 2019. In real terms, you need approximately $80,600 in 2025 to have the same purchasing power as $65,000 in 2019.
Our Salary Calculator includes inflation-adjusted real income comparison, and our Income Tax Calculator shows how bracket creep (inflation pushing you into higher brackets without real income growth) affects your tax burden.
If your savings earn less than the inflation rate, your purchasing power shrinks in real terms even as your account balance grows.
A $100,000 savings account earning 1% annual interest during a 4% inflation year loses approximately 3% of its real purchasing power — meaning after one year, it's worth the equivalent of about $97,000 in today's dollars even though the account shows $101,000.
Over 20 years, this effect is devastating to fixed-income retirees on pensions or low-yield savings.
This is why investments that historically outpace inflation — stocks, real estate, TIPS (Treasury Inflation-Protected Securities) — are essential components of retirement planning. The US Treasury's TIPS information is available at TreasuryDirect.gov.
The time value of money principle states that money today is worth more than the same amount in the future — because of inflation and the opportunity to invest. $50,000 promised to you in 20 years is not worth $50,000 in today's terms.
Discounted at 3% annual inflation, that future $50,000 is worth only approximately $27,684 in today's purchasing power. This concept is fundamental to pension valuations, annuity pricing, bond valuation, and retirement income planning.
See our Present Value Calculator and Future Value Calculator for inflation-adjusted projections.
The most effective inflation hedges historically available to US investors: Stock market index funds — the S&P 500 has historically returned ~10% nominal annually, well above long-run inflation of ~3%. Real estate — property values and rental income tend to rise with inflation. I Bonds (Series I Savings Bonds) — issued by the US Treasury, rate adjusts every 6 months based on CPI; purchase at TreasuryDirect.gov. TIPS (Treasury Inflation-Protected Securities) — principal adjusts with CPI. Commodities and REITs — some protection but with higher volatility.
Keeping large amounts in low-yield savings accounts during high-inflation periods is the strategy most likely to lose purchasing power silently over time.
Enter the original dollar amount. Select the starting year (from 1913 to present). Select the ending year (or use "today" for current value). Click Calculate.
The tool returns: the equivalent amount in the target year's dollars, the total percentage change in purchasing power, the average annual inflation rate over the period, and a year-by-year chart of purchasing power change.
You can also run it in reverse — enter a future amount to find what you'd need to save today to have that purchasing power later.
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Inflation rate = ((Current CPI − Past CPI) ÷ Past CPI) × 100. For example, if CPI was 280 last year and is 290 this year: ((290 − 280) ÷ 280) × 100 = 3.57% inflation. The BLS publishes monthly CPI reports and provides historical data back to 1913 at BLS.gov/cpi/data.
The Federal Reserve targets 2% annual PCE inflation as the definition of price stability — low enough to avoid the economic disruption of high inflation, but not so low as to risk deflation (falling prices), which can cause economic stagnation. Historically, the US has averaged approximately 3% CPI inflation over the long run.
Inflation above 5% (as seen in 2021–2022) creates significant economic stress, particularly for fixed-income households and retirees.
Over a 25-year retirement, 3% annual inflation reduces purchasing power by approximately 52% — meaning you need roughly twice as much income at the end of retirement as at the beginning to maintain the same standard of living. This is why inflation adjustment is critical in retirement planning.
Social Security benefits receive annual cost-of-living adjustments (COLAs) tied to CPI — details at SSA.gov/cola.
Private pensions and fixed annuities often do not adjust for inflation, making them vulnerable to purchasing power erosion over long periods.
This inflation calculator uses historical CPI data from the Bureau of Labor Statistics and provides estimates for educational purposes only. Inflation data may be revised by the BLS. This tool is not a substitute for financial advice. For professional guidance on inflation protection strategies, consult a certified financial planner.
Official US inflation data: BLS.gov.
It adjusts an amount of money between two years using published price-index (CPI) data, showing how much you would need in the later year to match the buying power of the earlier amount.
Inflation erodes purchasing power: as prices rise, each unit of currency buys less. For example, at 3% annual inflation, money loses roughly a quarter of its value over a decade.
Governments track the Consumer Price Index (CPI) — the average price change of a basket of goods and services. The annual percentage change in CPI is the headline inflation rate.
Holding cash alone usually loses value over time. Inflation-linked bonds, diversified investments and accounts paying interest above the inflation rate all help preserve purchasing power.