Understand the impact of inflation on your money. Enter an amount and inflation rate to see how much purchasing power you lose over time and what that money will need to grow to in order to maintain its value.
Inflation is the gradual loss of purchasing power — the reason your grandparents' nickel candy bar costs $2 today. The dollar in your pocket is a unit of measurement that quietly shrinks every year, and any plan that ignores that shrinkage will underestimate how much money you actually need.
This calculator answers two related questions. First: what will today's dollars buy in the future? A $100,000 retirement income looks generous now, but at 3% inflation it buys only about $55,000 of today's groceries 20 years from now. Second: how many future dollars do you need to match today's purchasing power? A $50,000 expense today will cost about $90,000 in 20 years at the same 3% rate.
The U.S. Federal Reserve targets 2% annual inflation as measured by the Personal Consumption Expenditures index. The long-run average since 1913 — when the Consumer Price Index series began — is closer to 3.2%. Rates spike well above that during oil shocks, wars, and supply disruptions, and dip below it during recessions. For long-horizon planning, 2.5–3.5% is a defensible range.
Income target today: $80,000/year Inflation: 3% Years until retirement: 25 Equivalent income needed at retirement (year 1): $80,000 × (1.03)^25 ≈ $167,500 By year 30 of retirement: $80,000 × (1.03)^55 ≈ $407,500 Most retirement calculators show a lump-sum number. Translate it back to annual income at retirement to see what you are really planning for.
Current cost of a 4-year public university: ≈ $115,000 (in-state, room and board) Education-specific inflation: typically 4–5% (higher than general CPI) Time horizon: 18 years (newborn to college freshman) At 5%: $115,000 × (1.05)^18 ≈ $277,000 At 7% (worst case): $115,000 × (1.07)^18 ≈ $389,000 Education inflation has consistently outpaced general inflation by 1.5–2 percentage points. Plan accordingly when funding a 529.
Nominal target: $1,000,000 saved by retirement in 30 years Inflation: 3% Real purchasing power in today's dollars: $1,000,000 / (1.03)^30 ≈ $412,000 If your goal is to live on $1,000,000 of today's purchasing power, you need closer to $2.43 million in 30 years. Always think in real (inflation-adjusted) terms when setting retirement targets.
Use this calculator any time you are projecting money across a horizon longer than a few years — retirement planning, college funding, long-term savings goals, multi-year salary negotiations, or evaluating a fixed-income annuity. Anything where future dollars need to be compared to today's standard of living.
It is also useful in reverse: when you see a historical figure ("my grandfather earned $5,000/year and supported a family"), the calculator translates that into today's purchasing power, which usually changes the interpretation entirely.
Where it is less useful: short-term cash management, comparisons within the same year, or any nominal figure where the time horizon is under a few years. Inflation compounds slowly enough that one or two years of normal CPI barely move the result.
For investment-return projections, pair this with the future-value and compound-interest calculators. The "real return" of an investment is its nominal return minus the inflation rate — a 7% return at 3% inflation is really 4% in purchasing-power terms.
Discount future money to find what it is worth today.
Calculate the future value of a lump sum or annuity.
Project your retirement savings growth and see if you are on track.
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Purchasing Power Lost
$44,632
Purchasing Power Loss %
44.6%
Need This Much to Match
$180,611
| Year | Real Value | Value Lost | Equivalent Needed |
|---|---|---|---|
| 1 | $97,087.38 | $2,912.62 | $103,000.00 |
| 2 | $94,259.59 | $5,740.41 | $106,090.00 |
| 3 | $91,514.17 | $8,485.83 | $109,272.70 |
| 4 | $88,848.70 | $11,151.30 | $112,550.88 |
| 5 | $86,260.88 | $13,739.12 | $115,927.41 |
| 6 | $83,748.43 | $16,251.57 | $119,405.23 |
| 7 | $81,309.15 | $18,690.85 | $122,987.39 |
| 8 | $78,940.92 | $21,059.08 | $126,677.01 |
| 9 | $76,641.67 | $23,358.33 | $130,477.32 |
| 10 | $74,409.39 | $25,590.61 | $134,391.64 |
| 11 | $72,242.13 | $27,757.87 | $138,423.39 |
| 12 | $70,137.99 | $29,862.01 | $142,576.09 |