Calculate US inflation's impact on purchasing power. See what any dollar amount is worth today using BLS CPI data | Calculator4U
Calculate purchasing power using historical US CPI data.
Understand how inflation erodes your purchasing power with the US Inflation Calculator. Using Consumer Price Index (CPI) data, see what yesterday's dollars are worth today and plan accordingly.
Inflation is the silent wealth destroyer. Over time, even moderate 3% inflation dramatically reduces what your money can buy. Understanding inflation's impact is essential for retirement planning, salary negotiations, and investment decisions.
This shows how much a dollar amount from the past would need to be today to maintain the same purchasing power.
$50,000 salary in 2000 has the same purchasing power as ~$92,000 in 2024. If your salary hasn't kept pace, you've effectively taken a pay cut!
| Period | Avg Rate | $100 Becomes |
|---|---|---|
| 2020-2024 | 5.4% | $130 (5 years) |
| 2000-2020 | 2.2% | $155 (20 years) |
| 1980-2000 | 3.7% | $207 (20 years) |
Related tools: Investment Calculator to beat inflation, Salary Increase Calculator for raise planning, and Retirement Calculator for long-term planning.
Consumer prices increased 3.8% year-over-year as of April 2026, according to BLS CPI-U data. This is elevated above the Federal Reserve's 2% long-run target. 2025 annual inflation averaged approximately 2.9%. Note: October and November 2025 CPI data was unavailable due to a US government shutdown — BLS used the geometric mean of surrounding months, as recommended by standard BLS methodology. Annual inflation rates since 2000: 2000 = 3.4%, 2010 = 1.6%, 2020 = 1.2%, 2021 = 7.0%, 2022 = 6.5%, 2023 = 3.4%, 2024 = 2.9%, 2025 ≈ 2.9%, April 2026 YoY = 3.8%.
Using BLS CPI data: $100 in January 2015 = $138.23 in mid-2025. Extended reference: $100 in 2000 ≈ $183 in 2026 (83% cumulative inflation). $100 in 2010 ≈ $147 in 2026 (47%). $100 in 2020 ≈ $124 in 2026 (24% — driven by post-COVID surge). $100 in 1990 ≈ $240 in 2026. $100 in 1980 ≈ $380 in 2026. Salary example: a $50,000 salary in 2000 needs to be approximately $91,500 in 2026 to maintain the same purchasing power. If your salary hasn't reached that level, you have experienced a real wage cut even with nominal raises.
Best inflation protection options ranked by risk and return. I Bonds (US Treasury Series I savings bonds): the composite rate for I bonds issued May through October 2025 is 3.98%, including a fixed rate of 1.10% and a variable rate of 2.88% tied to CPI-U. Maximum purchase: $10,000 per year per person electronically. TIPS (Treasury Inflation-Protected Securities): principal adjusts with CPI; interest paid on adjusted principal. Available in 5, 10, 30-year terms. Stocks (S&P 500): historical average return ~10% nominal, ~7% real after inflation. Real estate: property values and rents historically track or exceed inflation over long periods. What NOT to do: hold large cash balances at 0.01% savings account rates — at 3.8% inflation, $100,000 in cash loses approximately $3,800 in purchasing power per year.
In the CPI, headline inflation is described as the 'all items' index, while core inflation is listed as the 'all items less food and energy' index. Headline CPI includes everything including volatile food and energy prices. Core CPI strips out food and energy to show underlying inflation trends. Why it matters: energy prices can swing 20-30% in a single year due to oil shocks or geopolitical events — these temporary spikes inflate headline CPI without reflecting lasting price pressures. The Federal Reserve monitors core CPI (and its preferred measure, Core PCE — Personal Consumption Expenditures) when setting interest rate policy, because it better reflects persistent inflation. When evaluating whether your salary raise is keeping up with inflation, headline CPI is more accurate for day-to-day purchasing power since you do pay for food and energy.
Nominal wage = your actual dollar salary. Real wage = salary adjusted for inflation, showing true purchasing power change. Real Wage Growth = ((1 + Nominal Raise Rate) ÷ (1 + Inflation Rate)) − 1. If your income goes up by the same percentage as the inflation rate, your purchasing power is not diminished — it doesn't grow or shrink. Example: salary raised 5% in a year with 3.8% inflation. Real wage growth = (1.05 ÷ 1.038) − 1 = 1.16% real growth. Example: salary raised 3% in 2022 when inflation was 6.5%. Real wage growth = (1.03 ÷ 1.065) − 1 = −3.3% real wage cut — your purchasing power fell despite the nominal raise. Understanding real vs nominal wages is essential for salary negotiations — always benchmark your raise request against the current CPI rate.
Social Security benefits adjust annually via COLA — Cost of Living Adjustment — to keep pace with inflation. The 2026 Social Security COLA was 2.5%, based on the CPI-W (Consumer Price Index for Urban Wage Earners and Clerical Workers) — a slightly different index than the CPI-U used in the standard inflation calculator. How COLA is calculated: BLS compares the average CPI-W for July, August, and September against the same period the prior year. If prices rose 2.5%, benefits rise 2.5% starting January of the following year. Social Security recipients have received COLAs ranging from 0% (2015, 2016) to 8.7% (2023 — the highest in 40 years). For retirees relying on Social Security, real purchasing power erodes whenever actual living cost increases — particularly healthcare and housing — outpace the CPI-W COLA calculation.
At 3% average annual inflation — the historical US average per SmartAsset — purchasing power halves approximately every 24 years (Rule of 72: 72 ÷ 3 = 24). Practical retirement impact: $1,000,000 portfolio today at 3% inflation: in 10 years = $744,000 real value. In 20 years = $554,000 real value. In 30 years = $412,000 real value. This means a $1 million portfolio at retirement needs to grow to $2.43 million over 30 years just to maintain purchasing power — before any spending. Retirees need to plan for 20-30 years of inflation erosion, and investments should beat inflation to grow real wealth. The standard retirement planning benchmark: a portfolio earning 7% nominal with 3% inflation generates 4% real return — the basis of the "4% withdrawal rule" (Bengen, 1994). At higher inflation rates (5%+), the real return shrinks to 2% and the 4% rule becomes unsafe for 30-year retirements.