Find out what a sum of money from any year since 1988 is worth today, using official ONS Consumer Prices Index (CPI) figures.
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How it works
The calculator divides the price index in the later year by the index in the earlier year and multiplies your amount by the result. For example, the CPI averaged 89.4 in 2010 and was 144.1 in September 2026, so £1,000 in 2010 is worth about £1,000 × 144.1 ÷ 89.4 = £1,612 today.
UK inflation in recent years
| Year | CPI annual average | Inflation |
|---|---|---|
| 2021 | 111.6 | 2.7% |
| 2022 | 121.7 | 9.1% |
| 2023 | 130.5 | 7.2% |
| 2024 | 133.9 | 2.6% |
| 2025 | 138.4 | 3.4% |
CPI vs RPI
The CPI is the UK’s headline inflation measure and is used for the Bank of England’s 2% target. The older Retail Prices Index (RPI) usually shows higher inflation and is no longer a national statistic, though it’s still used for some things such as student loan interest and some index-linked bonds. This tool uses CPI.
The CPI is an average across a basket of hundreds of goods and services. If you spend more on things that have risen faster, such as energy or food, your personal inflation rate will be higher.
Frequently asked questions
What is £100 in 2000 worth today?
About £198 in September 2026, based on CPI rising from 72.7 to 144.1.
Where does the data come from?
The Office for National Statistics CPI index (series D7BT), annual averages, with the latest month for 2026.
Why does the calculator start in 1988?
The ONS CPI series is published from 1988. Earlier figures are only modelled estimates.
What is the current UK inflation rate?
Check the ONS for the latest monthly figure; this page uses the index up to September 2026.
Sources
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