Method
The calculator uses the standard CPI ratio method: adjusted amount = original amount x target CPI / original CPI. If the target index is higher, the adjusted amount is higher because prices rose relative to the original period.
Assumptions and limitations
CPI and HICP are aggregate price measures. They may not match a specific household, country, city or spending pattern. Use official CPI/HICP series for the region you are studying, and check the source date before relying on the result.
References
- U.S. Bureau of Labor Statistics: Consumer Price Index, accessed 2026-05-13.
- World Bank: Inflation, consumer prices, accessed 2026-05-13.
- Eurostat: Harmonised Index of Consumer Prices, accessed 2026-05-13.
Last reviewed: 2026-05-13