Value of £100 from 1999 to 2000
£100 in 1999 is equivalent in purchasing power to about £102.96 in 2000. The pound had an average inflation rate of 2.96% per year between 1999 and 2000, producing a cumulative price increase of 2.96%.
This means that prices in 2000 are 1.03 times as high as average prices since 1999, according to the Office for National Statistics composite price index.
The inflation rate in 1999 was 1.54%. The inflation rate in 2000 was 2.96%. The 2000 inflation rate is lower compared to the average inflation rate of 3.11% per year between 2000 and 2025.
⌃
| Average inflation rate | 2.96% |
| Converted amount £100 base | £102.96 |
| Price difference £100 base | £2.96 |
| CPI in 1999 | 652.500 |
| CPI in 2000 | 671.800 |
| Inflation in 1999 | 1.54% |
| Inflation in 2000 | 2.96% |
| £100 in 1999 | £102.96 in 2000 |
How to calculate inflation rate for £100, 1999 to 2000
Our calculations use the following inflation rate formula to calculate the change in value between 1999 and 2000:
CPI in 2000 CPI in 1999
×
1999 GBP value
=
2000 GBP value
Then plug in historical CPI values. The U.K. CPI was 652.5 in the year 1999 and 671.8 in 2000:
671.8652.5
×
£100
=
£102.96
£100 in 1999 has the same "purchasing power" or "buying power" as £102.96 in 2000.
To get the total inflation rate for the 1 years between 1999 and 2000, we use the following formula:
CPI in 2000 - CPI in 1999CPI in 1999
×
100
=
Cumulative inflation rate (1 years)
Plugging in the values to this equation, we get:
671.8 - 652.5652.5
×
100
=
3%
Data source & citation
Raw data for these calculations comes from the composite price index published by the UK Office for National Statistics (ONS). A composite index is created by combining price data from several different published sources, both official and unofficial. The Consumer Price Index, normally used to compute inflation, has only been tracked since 1988. All inflation calculations after 1988 use the Office for National Statistics' Consumer Price Index, except for the current year, which is based on The Bank of England's forecast.
You may use the following MLA citation for this page: “1999 pounds in 2000 | UK Inflation Calculator.” Official Inflation Data, Alioth Finance, 17 May. 2025, https://www.officialdata.org/1999-GBP-in-2000.
Special thanks to QuickChart for their chart image API, which is used for chart downloads.
| Average inflation rate | 2.96% |
| Converted amount £100 base | £102.96 |
| Price difference £100 base | £2.96 |
| CPI in 1999 | 652.500 |
| CPI in 2000 | 671.800 |
| Inflation in 1999 | 1.54% |
| Inflation in 2000 | 2.96% |
| £100 in 1999 | £102.96 in 2000 |
