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Inflation calculator - British Pound

£30,000 in 2004
£41,992.29 in 2020

The inflation rate in the United Kingdom between 2004 and 2020 was 39.97%, which translates into a total increase of £11,992.29. This means that 30,000 pounds in 2004 are equivalent to 41,992.29 pounds in 2020. In other words, the purchasing power of £30,000 in 2004 equals £41,992.29 in 2020. The average annual inflation rate between these periods was 2.12%.

Inflation timeline in the United Kingdom (2004 - 2020)

The following chart depicts the equivalence of £30,000 due to compound inflation and CPI changes. All values are equivalent in terms of purchasing power, which means that for each year the same goods or services could be bought with the indicated amount of money.

All calculations are performed in the local currency (GBP) and using 6 decimal digits. Results show only up to 2 decimal digits to favour readability. Inflation data is provided by governments and international institutions on a monthly basis.

The following table contains relevant indicators:

Indicator Value
Cumulative inflation from 2004 to 2020 39.97%
Avg. Annual inflation from 2004 to 2020 2.12%
CPI 2004 77.8
CPI 2020 108.9

How to calculate the time value of money with inflation data?

There are several ways to calculate the time value of money. Depending on the data available, results can be obtained by using the Consumer Price Index (CPI) formula or the compound interest formula.

Using the CPI formula

When we have both the start and end years, we can use the following formula:

Valuet =Value0 ×
CPIt/CPI0

To obtain the values equivalent in buying power between 2004 and 2020, use the corresponding CPI values:

Value2020
=Value2004 ×
CPI2020/CPI2004
=£ 30,000 ×
108.9/77.8
£41,992.29

Alternative: Using the compound interest formula

Given that money changes with time as a result of an inflation rate that acts as compound interest, we can use the following formula: FV = PV × (1 + i)n, where:

  • FV: Future Value
  • PV: Present Value
  • i: Interest rate (inflation)
  • n: Number of times the interest is compounded (i.e. # of years)

In this case, the future value represents the final amount obtained after applying the inflation rate to our initial value. In other words, it indicates how much are £30,000 worth today. There are 16 years between 2004 and 2020 and the average inflation rate was 2.124%. Therefore, we can resolve the formula like this:

Value2020
=PV × (1 + i)n
=£30,000 × (1 + 0.02124)16
£41,992.29

UK inflation - Conversion table

Initial Value Equivalent value
£1 pound in 2004 £1.4 pounds in 2020
£5 pounds in 2004 £7 pounds in 2020
£10 pounds in 2004 £14 pounds in 2020
£50 pounds in 2004 £69.99 pounds in 2020
£100 pounds in 2004 £139.97 pounds in 2020
£500 pounds in 2004 £699.87 pounds in 2020
£1,000 pounds in 2004 £1,399.74 pounds in 2020
£5,000 pounds in 2004 £6,998.71 pounds in 2020
£10,000 pounds in 2004 £13,997.43 pounds in 2020
£50,000 pounds in 2004 £69,987.15 pounds in 2020
£100,000 pounds in 2004 £139,974.29 pounds in 2020
£500,000 pounds in 2004 £699,871.47 pounds in 2020
£1,000,000 pounds in 2004 £1,399,742.93 pounds in 2020
Cumulative inflation 2004-2020 39.97%
Avg. annual inflation 2004-2020 2.12%
CPI 2004 77.8
CPI 2020 108.9

Value of Pound over time (by year)

Period Value
2004 30,000
2005 30,616.97
2006 31,388.17
2007 32,120.82
2008 33,239.07
2009 33,894.6
2010 34,742.93
2011 36,092.54
2012 37,017.99
2013 37,866.32
2014 38,406.17
2015 38,560.41
2016 38,946.02
2017 39,948.59
2018 40,874.04
2019 41,568.12
2020 41,992.29

All available years

Today's value of british pounds by year:

1955 | 1956 | 1957 | 1958 | 1959 | 1960 | 1961 | 1962 | 1963 | 1964 | 1965 | 1966 | 1967 | 1968 | 1969 | 1970 | 1971 | 1972 | 1973 | 1974 | 1975 | 1976 | 1977 | 1978 | 1979 | 1980 | 1981 | 1982 | 1983 | 1984 | 1985 | 1986 | 1987 | 1988 | 1989 | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |

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