Inflation Calculator Free Online
Convert US dollar amounts across years using BLS Consumer Price Index (CPI-U) annual averages from 1913 to 2025. See real purchasing power across history.
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Inflation Calculator Features
1913 to 2025
Full BLS CPI-U series annual averages. The CPI began in 1913, capturing both World Wars, Great Depression, post-WWII boom, 1970s stagflation, and the 2021–2023 inflation spike.
US CPI-U
Consumer Price Index for All Urban Consumers — the standard measure cited by the Federal Reserve, Social Security COLA, and TIPS bonds.
Multiple Metrics
Equivalent value, total inflation %, average annual %, and the raw multiplier (e.g. $1 in 1913 = $32+ in 2025).
Live Calculation
Change any field, results update instantly.
Historical Context
$1 in 1980 ≈ $4 in 2025. $100 in 1950 ≈ $1,338 in 2025. $1 in 1913 ≈ $32.58 in 2025.
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Free vs Pro
| Feature | Free | Pro |
|---|---|---|
| Full inflation calculation | ||
| Live calculation | ||
| Quick presets | ||
| Bulk CSV / Excel calculation | — | |
| REST API access | — | |
| Save & share calculations | — |
Frequently Asked Questions
Consumer Price Index for All Urban Consumers — the BLS index measuring price changes for a basket of goods/services. Used for cost-of-living adjustments, TIPS bonds, and most inflation comparisons.
Equivalent = original × (CPI_to ÷ CPI_from). Example: $100 in 1980 (CPI 82.4) → $100 × (322.5 ÷ 82.4) = $391 in 2025.
1979–1980: 13.5% peak annual. The "Volcker disinflation" pushed it back below 4% by 1983. The 2022 peak was 8.0% — the highest since 1981.
No — 2025 uses the mid-year BLS estimate of ~322.5. Final 2025 CPI is published in early 2026.
Below 2% risks deflation (worse than mild inflation). Above 3% erodes savings and complicates wage planning. The Fed views 2% as the sweet spot for long-term price stability.