Inflation Calculator
See what a dollar from any year since 1913 is worth today — and what today's dollar will buy in 2050.
Interactive Inflation Calculator
Result
Use this free inflation calculator to convert historical dollars to today’s purchasing power, or to project what today’s dollar will buy in any future year. Built on official BLS CPI data.
How to use this inflation calculator
Enter the amount, the start year, and the end year. The tool returns the inflation-adjusted value, the cumulative inflation percentage, and the annualized rate. For forward projections, set a custom inflation rate that reflects your planning assumption.
Worked example: $100 in 1980
A dollar in 1980 is worth about $3.90 in 2026 — meaning $100 in 1980 has the same purchasing power as $390 today. Cumulative inflation over 46 years was about 290%, averaging 3.2% per year.
That average hides meaningful volatility: inflation spiked above 13% in 1979-1980, fell below 2% in the late 1990s and 2010s, and surged above 8% in 2022 before moderating. Long-term planning should use averages or ranges rather than any single year.
Worked example: projecting $50,000 in 2036
At a 3% annual inflation rate, $50,000 in 2026 dollars requires $50,000 × (1.03)^10 = $67,196 in 2036 to maintain the same purchasing power. Over 30 years, that figure grows to $121,363.
For a retiree planning 30 years of retirement income, this is the gap that catches most people off guard. Inflation doubles prices roughly every 24 years at 3% — the second decade of retirement costs materially more than the first.
What CPI measures (and what it doesn’t)
CPI tracks the price of a representative basket of goods and services — housing, food, transportation, medical care, education, apparel, recreation. It is the most comprehensive measure of consumer inflation but has known limitations:
- Owner-equivalent rent is used to measure housing costs for homeowners, which understates actual cost increases for buyers in appreciating markets.
- Healthcare inflation has averaged 5-7% annually for decades, well above general CPI.
- Education and childcare have inflated faster than general CPI, often 5%+ annually.
- Technology has generally deflated — electronics get cheaper over time.
For sector-specific projections, use the appropriate sub-index rather than headline CPI.
Real return vs. nominal return
A 7% nominal investment return with 3% inflation produces a 4% real return. Over 30 years:
- $10,000 at 7% nominal: $76,123
- $10,000 at 4% real: $32,434 in today’s dollars
The headline 7% suggests your money grew 7.6x. In purchasing power, it grew 3.2x. The gap is what kills retirement plans that ignore inflation.
For long-term planning, always work in real terms. Decide what you want your retirement income to buy in today’s dollars, then project that figure forward using your assumed inflation rate.
Tips for inflation-aware planning
- Use real returns in long-term projections. A 6-7% real return is a reasonable assumption for a diversified equity portfolio over 30+ years.
- Stress-test with higher inflation. Run your plan at 4-5% inflation in addition to the standard 3%. If the plan still works, it has margin.
- Index income sources to inflation. Social Security, some pensions, and TIPS-adjusted portfolios are inflation-protected. Fixed pensions and nominal bonds are not.
- Watch healthcare specifically. Fidelity estimates that an average couple retiring at 65 will need $300,000+ for healthcare costs alone — and that figure assumes 5% medical inflation.
- Geographic arbitrage matters. Inflation is national, but local cost-of-living changes can outpace it. A retiree moving from a high-cost metro to a low-cost region can effectively reduce their inflation exposure.
Common inflation mistakes
- Using nominal returns for retirement planning. Always work in real terms for multi-decade projections.
- Assuming inflation stays constant. The US has had years of 0% inflation and years of 13%. Plan for a range.
- Ignoring healthcare inflation. Healthcare consistently outpaces general CPI. Use sector-specific projections for medical costs.
- Treating Social Security as inflation-proof. Cost-of-living adjustments are based on CPI-W and have historically lagged true inflation for retirees, particularly on healthcare costs.
Related Tools
- Salary Calculator – Convert between hourly, weekly, monthly, and annual pay.
- Compound Interest Calculator – Project investment growth with inflation adjustment.
- Retirement Calculator – Estimate the nest egg you need for retirement.
- Percentage Calculator – Quick percentage math for percentage change.
- ROI Calculator – Measure return on investment with inflation adjustment.
| Year | Cumulative inflation since 1980 | $100 in 1980 equivalent in 2026 dollars | Annual average rate |
|---|---|---|---|
| 1980 | 0% | $100 | — |
| 1990 | About 65% | $165 | 5.2% annual |
| 2000 | About 105% | $205 | 4.6% annual |
| 2010 | About 165% | $265 | 3.7% annual |
| 2020 | About 230% | $330 | 3.2% annual |
| 2026 | About 290% | $390 | 3.2% annual |
Compare your options
Two methods, three minutes. The honest trade-off table.
This inflation calculator
- + Official CPI data from 1913 to present.
- + Forward projections using selectable inflation rates.
- + Bidirectional: historical-to-current and current-to-future.
- − Does not model hyperinflation or currency redenomination.
BLS inflation calculator
- + Official US government source.
- + Updated monthly with the latest CPI release.
- − Limited to historical actuals — no forward projections.
- − Sparse interface with no scenario modeling.
SmartAsset / NerdWallet inflation tools
- + User-friendly interfaces with explanations.
- + Often paired with retirement and purchasing-power content.
- − Methodology sometimes unclear.
- − Ad-heavy with extensive upsells.
Who actually uses Inflation Calculator?
Five concrete situations pulled from real sessions, with the exact inputs people paste in.
Compare the purchasing power of fixed monthly payments across decades.
Enter a pension offer of $3,000/month starting in 2030. The tool shows what that payment will be worth in today's dollars across the retirement horizon — making it easier to compare against Social Security estimates.
Estimate how much today's savings will need to grow to maintain purchasing power.
Set a target annual retirement income in today's dollars. The calculator projects what that income will need to be in 2040, 2050, and 2060 to maintain the same lifestyle.
Adjust historical salaries for inflation in real terms.
Comparing a $50,000 offer from 2010 with today's offer at $80,000? The tool shows what $50,000 in 2010 is worth in 2026 dollars — and whether the new offer represents a real raise.
Understand the real cost of a fixed-rate mortgage over 30 years.
A $2,000/month mortgage payment in 2026 will be much smaller in real terms by 2056. The calculator shows what that payment will buy at each point in the loan term.
Convert old prices to current dollars for comparison."
A house that cost $30,000 in 1965 — what would that be today? The tool uses official CPI data to give a defensible current-dollar equivalent.
An inflation calculator that converts any past dollar to today's value — and projects any future value
Whether you are evaluating a long-term pension offer, comparing salaries across decades, or estimating how much today's savings will need to grow to fund retirement, inflation is the constant that quietly changes every other number. This tool uses official CPI data from 1913 forward and lets you project any future year at a configurable rate. The result is a clear picture of purchasing power across time.
Official BLS CPI from 1913 to present
Historical conversions use published CPI-U values, not estimates. Forward projections use configurable assumptions so you can stress-test scenarios.
Past-to-present and present-to-future
Convert a 1985 dollar to 2026 equivalent, or project a 2026 dollar to 2050. Same tool, both directions.
Choose your inflation assumption
Default 3% for planning purposes. Adjust to 2% (Fed target) or 4-5% (conservative) based on your scenario.
Shows cumulative and annualized inflation
A 290% cumulative inflation over 46 years averages 3.2% annually — but the user sees both figures, which prevents the common error of treating inflation as a single-year event.
What you only get here: a free inflation calculator with official BLS data back to 1913, forward projections to 2070+, and configurable scenarios — no signup, no ad clutter.