Value of 1999 British Pounds today

£100 in 1999

£146 in 2018

The inflation rate in United Kingdom between 1999 and today has been 46%, which translates into a total increase of £46. This means that 100 pounds in 1999 are equivalent to 146 pounds in 2018. In other words, the purchasing power of £100 in 1999 equals £146 today. The average annual inflation rate has been 1.91%.

Inflation timeline in United Kingdom (1999-2018)

The following chart ilustrates the equivalence of £100 throughout the years due to inflation and CPI changes. All values are equivalent in terms of purchashing 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. Today's values were obtained by estimating figures from recent trends.

The following table contains relevant indicators:

Indicator Value
Total Inflation (1999-2018) 43.81%
Total Inflation* 46%
Annual inflation avg. (1999-2018) 1.93%
Annual inflation avg.* 1.91%
CPI 1999 73.01
CPI 2018 105
CPI today* 106.6
£1 in 1999 £1.44 in 2018

* Values extrapolated from the last official data to obtain today's values.

How to calculate today's value of money after inflation?

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

Using the compound interest formula

Given that money changes in time as a result of an inflation rate that acts as a compound interest, the following formula can be used: 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 £100 worth today. There are 19 years between 1999 and 2018 and the average inflation rate has been 1.9103%. Therefore, we can resolve the formula like this:

FV = PV (1 + i)n = £100 * (1 + 0.02)19 = £143.81

Using the CPI formula

When the CPI for both start and end years is known, the following formula can be used:

Final value = Initial value *
CPI final/CPI initial

In this case, the CPI in 1999 was 73.01 and the CPI today is 106.6. Therefore,

Final value = Initial value *
CPI final/CPI initial
= £100 *
105/73.01
= £143.81

United Kingdom inflation - Conversion table

Initial Value Equivalent value
£1 pound in 1999 £1.46 pounds today
£5 pounds in 1999 £7.3 pounds today
£10 pounds in 1999 £14.6 pounds today
£50 pounds in 1999 £73 pounds today
£100 pounds in 1999 £146 pounds today
£500 pounds in 1999 £730.02 pounds today
£1,000 pounds in 1999 £1,460.04 pounds today
£5,000 pounds in 1999 £7,300.18 pounds today
£10,000 pounds in 1999 £14,600.36 pounds today
£50,000 pounds in 1999 £73,001.81 pounds today
£100,000 pounds in 1999 £146,003.61 pounds today
£500,000 pounds in 1999 £730,018.07 pounds today
£1,000,000 pounds in 1999 £1,460,036.14 pounds today

Value of Pound in time (by year)

Period Value
1999 100
2000 101.11
2001 101.95
2002 103.06
2003 104.74
2004 106.13
2005 107.8
2006 109.98
2007 113.13
2008 115.73
2009 119.3
2010 121.76
2011 125.6
2012 130.12
2013 133.27
2014 135.87
2015 136.83
2016 137.51
2017 139.98
2018 143.81
Today 146