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Inflation Then vs Now

What a historical amount is worth in todays money

📈Inflation Calculator — Then vs Now

An inflation calculator shows the purchasing power of money across time using the Consumer Price Index (CPI). If inflation averages 3% per year, £100 in 2000 would need to be £181 in 2025 to buy the same goods. Inflation erodes the real value of money held in savings.

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Tip: The "Rule of 70": divide 70 by the annual inflation rate to estimate years to halve purchasing power. At 3.5% inflation, purchasing power halves in 20 years.

  1. 1Obtain CPI indices for the start year and end year
  2. 2Adjusted value = Original amount × (CPI_end / CPI_start)
  3. 3The ratio CPI_end / CPI_start gives the inflation multiplier
  4. 4UK CPI roughly doubled from 2000 to 2024 (100 → ~218)
£100 in year 2000=~£218 in 2024UK CPI roughly doubled over 24 years
£1,000 in 1990=~£2,500 todayPrices have risen 2.5× since 1990
£500 in 2008 (peak pre-crisis)=~£850 todayEnergy crisis pushed post-2020 inflation sharply up
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