Inflation Calculator UK
Our free UK inflation calculator uses historical Consumer Price Index (CPI) data to show you how the real value of the pound has changed over time. See what a given sum of money from the past would be worth in today's prices.
Estimated Balance
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Total Savings
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Total Interest
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How UK CPI Inflation Erodes Purchasing Power
This calculator uses UK Consumer Price Index (CPI) data published by the ONS to adjust monetary values for inflation. Formula: Adjusted Value = Original Value × (CPI in Target Year ÷ CPI in Base Year). Inputs: original amount in pounds, start year, and end year. Outputs: inflation-adjusted equivalent value, total percentage change, and the real purchasing power lost or gained over the period.
Frequently Asked Questions
What is UK inflation and how is it measured?
UK inflation measures the rate at which the general level of prices for goods and services is rising. It is measured by the ONS using the Consumer Price Index (CPI) and the Retail Price Index (RPI). The Bank of England targets a CPI inflation rate of 2% per year. CPI is now the primary measure used by the UK government and Bank of England.
How does UK inflation affect my savings and mortgage?
High inflation erodes the real value of cash savings — money in a savings account earning less than the inflation rate loses purchasing power over time. For mortgages, inflation can benefit borrowers on fixed rates as the real value of their debt decreases. Variable-rate mortgage holders may see rate rises as the Bank of England increases the base rate to control inflation.
What was UK inflation in 2022–2024?
UK inflation reached a 41-year high of 11.1% in October 2022, driven by energy price shocks following the Russia-Ukraine conflict and supply chain disruptions. It fell progressively through 2023 and 2024, returning towards the Bank of England's 2% target. This period significantly eroded the purchasing power of UK wages and savings.
How does the Bank of England use interest rates to control UK inflation?
The Bank of England raises its base interest rate to reduce inflation. Higher interest rates increase the cost of borrowing, which reduces consumer spending and business investment, slowing economic activity and easing upward pressure on prices. The Bank's Monetary Policy Committee (MPC) meets eight times per year to set the base rate.
How much has £1,000 lost in value due to UK inflation since 2000?
Due to UK inflation, £1,000 in 2000 had the equivalent purchasing power of approximately £1,900 in 2024 — meaning your money would need to be worth nearly double to have maintained its real value over that period. Use our inflation calculator to compute the exact purchasing power change for any amount and time period using ONS CPI data.