learn.howToCalculate
learn.whatIsHeading
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.
Formel
Trin-for-trin guide
- 1Obtain CPI indices for the start year and end year
- 2Adjusted value = Original amount × (CPI_end / CPI_start)
- 3The ratio CPI_end / CPI_start gives the inflation multiplier
- 4UK CPI roughly doubled from 2000 to 2024 (100 → ~218)
Løste eksempler
Ofte stillede spørgsmål
What is Inflation?
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
How accurate is the Inflation calculator?
The calculator uses the standard published formula for inflation. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.
What units does the Inflation calculator use?
This calculator works with inches, British pounds, percentages. You can enter values in the units shown — the calculator handles all conversions internally.
What formula does the Inflation calculator use?
The core formula is: Adjusted value = Original amount × (CPI_end / CPI_start). Each step in the calculation is shown so you can verify the result manually.
Klar til at beregne? Prøv den gratis Inflation Then vs Now-beregner
Prøv det selv →