fittings CPI-U Inflation Adjuster

Choose this endpoint when you need to adjust a US dollar amount for inflation using the authoritative BLS CPI-U index. Prefer it over custom inflation calculators when official government data is required, or when you need both the adjusted amount and underlying index values for transparency. Best for US-dollar-denominated amounts; for foreign currency inflation, consider country-specific indices.

• Invalid or future date period returns an error — only periods with published BLS data are supported
• Missing required 'amount' or 'from' parameters returns a validation error
• Non-numeric amount value causes a schema validation failure
• Target period defaults to latest published month if omitted, which may change over time as new data is published