Inflation Calculator
See how inflation erodes purchasing power over time. Enter an amount, a start year, and an end year to find out what your money is really worth after accounting for inflation.
Adjusted Value
$2,093.78
Total Inflation
109.38%
Purchasing Power Change
$522.39
Purchasing Power Decline
How the value of your $1,000.00 decreases over time
Year-by-Year Details
How to use
Enter the dollar amount you want to adjust, the start year, and the end year. The calculator uses an average annual inflation rate (which you can customize) to show you how purchasing power changes over time. A year-by-year breakdown shows the gradual effect of inflation.
Formula
The formula compounds the annual inflation rate over the number of years between your start and end dates. A positive result shows what you would need in the end year to have the same purchasing power as the original amount in the start year. The historical average US inflation rate is approximately 3.0% per year.
When this calculator helps
Inflation is often called the "silent tax" because it gradually erodes your purchasing power without you noticing. This calculator helps you understand what your money will really be worth in the future, useful for retirement planning, salary negotiations, long-term savings goals, and investment decisions. Economists, financial planners, and students use it to illustrate how inflation compounds over time. If you are saving for a goal 10 or 20 years away, knowing the inflation-adjusted target prevents you from undersaving and falling short of your actual needs.
Examples
Example 1: College Savings Planning
College tuition costs $30,000/year today. At 5% education inflation (higher than general inflation), in 18 years that same education will cost $30,000 × (1.05)^18 = $72,244/year. Parents starting a college fund today need to target nearly 2.4 times the current cost.
Example 2: Salary Purchasing Power
A worker earned $50,000 in 2010 and earns $55,000 today, a 10% raise over 14 years. But at 3% annual inflation, $50,000 in 2010 equals $75,645 in 2024 purchasing power. Their "raise" actually represents a 27% decrease in real purchasing power.
Example 3: Retirement Needs
You plan to retire in 30 years and want $60,000/year in today's dollars. At 3% inflation, you will need $60,000 × (1.03)^30 = $145,636/year to maintain the same lifestyle. This means your retirement savings target needs to be more than double what you might initially assume.
Things to watch
- •The 3% average inflation rate is a long-term historical figure. Your personal inflation rate may differ based on spending habits, housing and healthcare often inflate faster than the average.
- •When evaluating investment returns, always consider the "real return" (nominal return minus inflation). A 7% return with 3% inflation gives you only 4% real growth.
- •Keeping large amounts of cash in a regular savings account (earning 0.01-0.5%) means losing 2-3% of purchasing power annually. High-yield savings or investments help offset this.
- •Fixed-income retirees are most vulnerable to inflation since their income stays flat while costs rise. Social Security has cost-of-living adjustments, but they often lag behind actual inflation.
- •Treasury Inflation-Protected Securities (TIPS) and I-Bonds are designed specifically to protect against inflation and can be useful for conservative investors.
Sources and methodology
Last reviewed: Checked during calculator QA. We review formulas, default assumptions, and examples against public references when a formal source applies.
Method: This calculator uses the formula explained on this page. We also check example results by hand to catch obvious mistakes.
Found something off? Send a correction with the page URL, inputs, result, and expected result.
Common questions
- What is inflation?
- Inflation is the rate at which the general level of prices rises over time, reducing your purchasing power. If inflation is 3% per year, something that costs $100 today will cost $103 next year. Over 20 years at 3% inflation, prices roughly double.
- How does inflation affect my savings?
- If your savings earn less interest than the inflation rate, you're losing purchasing power. A savings account earning 2% while inflation is 3% means you're effectively losing 1% per year in real terms. This is why investing matters for long-term goals.
- What is the historical average inflation rate?
- The US historical average inflation rate is approximately 3.0% per year since 1926. However, it varies a lot by decade, the 1970s saw inflation above 7%, while the 2010s averaged under 2%. Recent years (2021-2023) saw inflation spike to 5-9% before returning closer to the long-term average.
- How does inflation affect retirement planning?
- Inflation is a major factor in retirement planning. If you need $50,000/year today and retire in 25 years, at 3% inflation you will need about $105,000/year to maintain the same lifestyle. This is why retirement calculators use 'real' returns (nominal return minus inflation) to project future purchasing power.
- What causes inflation?
- Inflation is driven by demand-pull factors (too much money chasing too few goods), cost-push factors (rising production costs like energy or labor), and monetary policy (central banks increasing the money supply). Supply chain disruptions, government spending, and global events can also trigger inflationary pressures.