Inflation Calculator
Calculate the real purchasing power of money over time using historical CPI data
$10,000 in 2000
$5,232
equivalent value in 2026
Purchasing Power Loss
$4,768
47.7% decline
Total Cumulative Inflation
91.1%
Average Annual Inflation
3.51%
What this means: Due to inflation, $10,000 in 2000 has the same purchasing power as $5,232 in 2026. Your money lost 47.7% of its value over 26 years.
Real value of $10,000 adjusted for inflation from 2000 to 2026
How to read this chart: The line shows the real purchasing power of your $10,000 over time. When the line is below the "Nominal Value" reference (blue dashed line), inflation has eroded purchasing power. The steeper the decline, the higher the inflation rate during that period. Major declines occurred during the 1970s energy crisis, the 1940s wartime inflation, and 2021–2022 post-pandemic inflation.
An inflation calculator uses historical Consumer Price Index (CPI) data to show you how the purchasing power of money changes over time. It lets you compare the real value of a dollar in one year versus another — answering questions like 'what would $10,000 in 1990 be worth today?' or 'how much do I need to save so that $1 million in 30 years has the same buying power as $1 million today?'
Formula:
Adjusted Value = Original Amount ÷ (1 + Inflation Rate)^YearsThe calculator compounds each year's actual CPI rate from Bureau of Labor Statistics data, then divides the original amount by the cumulative inflation multiplier to find the equivalent real value in the target year. This is more accurate than using a single average rate because inflation varies significantly year to year.
- 1
Enter the dollar amount you want to analyze
- 2
Select the starting year (the year the amount is denominated in)
- 3
Select the ending year (the year you want to convert to)
- 4
Review the inflation-adjusted equivalent value and cumulative inflation rate
- 5
Read the chart to see how purchasing power changed year by year
- 6
Use the results to inform retirement planning, salary negotiations, or investment goals
- Inflation silently erodes wealth — $1 million in savings loses nearly half its purchasing power over 25 years at 3% inflation
- Social Security, pensions, and fixed income all lose real value over time without COLA adjustments
- Salary negotiations require knowing the real change in purchasing power, not just nominal dollar increases
- Investment returns must outpace inflation to represent actual wealth creation — a 3% return in a 4% inflation environment is a net loss
- The 2021–2022 inflation surge was the highest in 40 years, making this calculation more relevant than ever
- Retirement planning without inflation adjustment is one of the most common and costly mistakes retirees make
- Evaluating whether your salary has kept pace with inflation over your career
- Planning retirement income goals in today's dollars vs. future dollars
- Comparing the real cost of housing or tuition across different decades
- Understanding how fixed pension benefits lose value over a long retirement
- Calculating how much your emergency fund needs to grow to maintain purchasing power
- Evaluating real investment returns net of inflation
- •Use 2.5–3% as your default inflation assumption for retirement planning — it's between the Fed's 2% target and the historical 3.1% average
- •Compare your salary growth to inflation every few years — if raises haven't kept pace with CPI, you've accepted a real pay cut
- •I bonds from the U.S. Treasury are explicitly inflation-indexed and guaranteed not to lose purchasing power — worth considering for cash reserves
- •TIPS (Treasury Inflation-Protected Securities) are another way to earn a guaranteed real return above inflation
HYSA Calculator
See if your savings account rate is beating inflation
Try Calculator →Retirement Savings Calculator
Plan inflation-adjusted retirement income goals
Try Calculator →Compound Interest Calculator
Model investment growth and compare to inflation
Try Calculator →Social Security Calculator
See how COLA adjustments protect Social Security from inflation
Try Calculator →Have questions about using this calculator? Check out our financial guides or contact us for help.
By submitting your email, you agree to our Privacy Policy, including that we store your email and results and may share them with advertising partners.
Frequently Asked Questions
How does the inflation calculator work?
The calculator uses historical CPI (Consumer Price Index) data from the Bureau of Labor Statistics to calculate the real purchasing power of money between any two years from 1913 to 2026. It compounds the annual inflation rate year-over-year to show you what a dollar amount in one year would be worth in another year after adjusting for inflation.
What is purchasing power and why does it matter?
Purchasing power is the amount of goods and services that money can buy. When prices rise (inflation), the purchasing power of your money declines — meaning $100 today buys less than $100 did 10 years ago. Understanding purchasing power helps you make informed decisions about investments, savings, and long-term financial planning.
What's the difference between inflation rate and cumulative inflation?
The annual inflation rate is the year-over-year percentage increase in prices. Cumulative inflation is the total compounded effect over multiple years. For example, if inflation is 3% per year for 10 years, the cumulative inflation is about 34.4%, not 30%, because each year's inflation compounds on top of the previous year's increase.
Can I use this calculator to predict future inflation?
No, this calculator uses historical CPI data and cannot predict future inflation rates. For years beyond 2026, you would need to estimate inflation rates based on economic forecasts. Most financial planners use 2.5–3% as a conservative long-term inflation estimate for retirement planning.
Why is there deflation (negative inflation) in some years?
Deflation occurs when prices decrease, which increases the purchasing power of money. You'll see deflation in the data during the Great Depression (1930s) and the 2008–2009 financial crisis. While deflation sounds good, it's often associated with economic downturns and reduced consumer spending.
How do I adjust my retirement savings for inflation?
To maintain your purchasing power in retirement, your investments need to grow faster than inflation. This is why portfolios typically include stocks and real estate, which historically outpace inflation over the long term. Use this calculator to see how much your future retirement income needs to be to match today's spending power, then use our Retirement Savings Calculator to model your savings goals.