How to use this calculator
Enter a monetary amount and two dates to calculate the inflation-adjusted value using RPI data. Useful for uprating past losses to present-day values.
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Inflation Up-rater

Convert a past value to today's money using inflation indices. Formula: Uprated = Original × (Target Index ÷ Original Index)

Inflation De-rater

Convert a current value to past money equivalent. Formula: De-rated = Original × (Target Index ÷ Original Index)

Data Available

RPI (Retail Price Index)

From January 1987

CPI (Consumer Price Index)

From January 1988

CPIH (CPI including owner occupiers' housing costs)

From January 1988