Inflation Calculator: Understand Your Money's Real Value
Real Purchasing Power
$5,537
Purchasing Power Lost
$4,463
Percentage Lost
44.6%
Purchasing Power Erosion
At 3% annual inflation, $10,000 today will only buy $5,537 worth of goods in 20 years.
| Year | Nominal | Real Value | Lost | Cumulative Inflation |
|---|---|---|---|---|
| 1 | $10,000 | $9,709 | $291 | 3.0% |
| 3 | $10,000 | $9,151 | $849 | 9.3% |
| 5 | $10,000 | $8,626 | $1,374 | 15.9% |
| 7 | $10,000 | $8,131 | $1,869 | 23.0% |
| 9 | $10,000 | $7,664 | $2,336 | 30.5% |
| 11 | $10,000 | $7,224 | $2,776 | 38.4% |
| 13 | $10,000 | $6,810 | $3,190 | 46.9% |
| 15 | $10,000 | $6,419 | $3,581 | 55.8% |
| 17 | $10,000 | $6,050 | $3,950 | 65.3% |
| 19 | $10,000 | $5,703 | $4,297 | 75.3% |
| 20 | $10,000 | $5,537 | $4,463 | 80.6% |
Inflation silently erodes your wealth every year. This calculator shows exactly how much purchasing power you lose over time. Use it to understand why your investments need to outpace inflation, not just earn positive returns.
How to Use This Calculator
- Choose mode: Future Value (what will money buy later) or Historical (past equivalent)
- Enter the dollar amount you want to analyze
- Set the expected annual inflation rate (3% is a common estimate)
- Choose the time period in years
- View the real purchasing power and how much value is lost
Real-World Impact: The Cost of Holding Cash
$100,000 in savings (3% inflation)
- After 10 years: $74,409 purchasing power
- After 20 years: $55,368 purchasing power
- After 30 years: $41,199 purchasing power
What $1 million bought
- 1990: Average home cost $79,000
- 2000: Average home cost $119,000
- 2020: Average home cost $329,000
Money loses approximately half its value every 24 years at 3% inflation. This is why long-term savings must be invested, not held as cash.
Why Track Inflation Impact?
- Retirement planning — Calculate how much you really need, not just the nominal amount
- Investment decisions — Understand why 2% savings rates don't preserve wealth
- Salary negotiations — Know if your raise actually keeps up with costs
- Historical context — Compare prices across different time periods accurately
Frequently Asked Questions
What is inflation?
Inflation is the rate at which prices for goods and services increase over time. When inflation rises, each dollar buys fewer goods than before, reducing your purchasing power.
What is the average inflation rate?
The U.S. Federal Reserve targets 2% annual inflation. Historically, U.S. inflation has averaged about 3% per year. Recent years (2021-2023) saw higher inflation of 5-8%.
How does inflation affect savings?
If your savings earn less interest than the inflation rate, you lose purchasing power. A savings account paying 1% while inflation is 3% means you effectively lose 2% annually in real terms.
How can I protect against inflation?
Investments like stocks, real estate, and I-bonds historically outpace inflation. Keeping large amounts in low-yield savings accounts erodes wealth over time.
What is the Rule of 72 for inflation?
Divide 72 by the inflation rate to estimate how many years until prices double. At 3% inflation, prices double in 24 years (72 ÷ 3 = 24).