# £100 in 1970 is worth £1,575.77 in 2020

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👉 You may be interested in £100 in 1970 → 2021

## Value of £100 from 1970 to 2020

£100 in 1970 is equivalent in purchasing power to about £1,575.77 in 2020, an increase of £1,475.77 over 50 years. The pound had an average inflation rate of 5.67% per year between 1970 and 2020, producing a cumulative price increase of 1,475.77%.

This means that prices in 2020 are 15.76 times higher than average prices since 1970, according to the Office for National Statistics composite price index.

The 1970 inflation rate was 6.40%. The inflation rate in 2020 was 1.80%. The 2020 inflation rate is higher compared to the average inflation rate of 0.70% per year between 2020 and 2021.

 Cumulative price change 1,475.77% Average inflation rate 5.67% Converted amount (£100 base) £1,575.77 Price difference (£100 base) £1,475.77 CPI in 1970 73.100 CPI in 2020 1,151.888 Inflation in 1970 6.40% Inflation in 2020 1.80% £100 in 1970 £1,575.77 in 2020

GBP Inflation since 1750
Annual Rate, the Office for National Statistics CPI

## Buying power of £100 in 1970

This chart shows a calculation of buying power equivalence for £100 in 1970 (price index tracking began in 1750).

For example, if you started with £100, you would need to end with £1,575.77 in order to "adjust" for inflation (sometimes refered to as "beating inflation").

When £100 is equivalent to £1,575.77 over time, that means that the "real value" of a single U.K. pound decreases over time. In other words, a pound will pay for fewer items at the store.

This effect explains how inflation erodes the value of a pound over time. By calculating the value in 1970 dollars, the chart below shows how £100 is worth less over 50 years.

According to the Office for National Statistics, each of these GBP amounts below is equal in terms of what it could buy at the time:

Pound inflation: 1970-2020
Year Pound Value Inflation Rate
1970 £100.00 6.40%
1971 £109.44 9.44%
1972 £117.24 7.13%
1973 £127.91 9.10%
1974 £148.43 16.04%
1975 £184.40 24.24%
1976 £214.91 16.54%
1977 £248.97 15.85%
1978 £269.63 8.30%
1979 £305.75 13.39%
1980 £360.74 17.99%
1981 £403.56 11.87%
1982 £438.30 8.61%
1983 £458.41 4.59%
1984 £481.26 4.98%
1985 £510.53 6.08%
1986 £527.91 3.40%
1987 £549.93 4.17%
1988 £576.88 4.90%
1989 £621.75 7.78%
1990 £680.57 9.46%
1991 £720.52 5.87%
1992 £747.47 3.74%
1993 £759.37 1.59%
1994 £777.70 2.41%
1995 £804.65 3.47%
1996 £824.08 2.41%
1997 £849.93 3.14%
1998 £879.07 3.43%
1999 £892.61 1.54%
2000 £919.02 2.96%
2001 £935.29 1.77%
2002 £950.89 1.67%
2003 £978.39 2.89%
2004 £1,007.52 2.98%
2005 £1,035.98 2.82%
2006 £1,069.08 3.20%
2007 £1,114.91 4.29%
2008 £1,159.37 3.99%
2009 £1,153.21 -0.53%
2010 £1,206.43 4.61%
2011 £1,269.22 5.20%
2012 £1,309.99 3.21%
2013 £1,349.79 3.04%
2014 £1,381.67 2.36%
2015 £1,395.35 0.99%
2016 £1,419.56 1.74%
2017 £1,470.45 3.58%
2018 £1,510.15 2.70%
2019 £1,547.91 2.50%
2020 £1,575.77 1.80%
2021 £1,586.80 0.70%*
* Compared to previous annual rate. Not final. See inflation summary for latest 12-month trailing value.
Click to show 44 more rows

This conversion table shows various other 1970 amounts in 2020 pounds, based on the 1,475.77% change in prices:

Conversion: 1970 pounds in 2020
Initial value Equivalent value
£1 pound in 1970 £15.76 pounds in 2020
£5 pounds in 1970 £78.79 pounds in 2020
£10 pounds in 1970 £157.58 pounds in 2020
£50 pounds in 1970 £787.88 pounds in 2020
£100 pounds in 1970 £1,575.77 pounds in 2020
£500 pounds in 1970 £7,878.85 pounds in 2020
£1,000 pounds in 1970 £15,757.70 pounds in 2020
£5,000 pounds in 1970 £78,788.49 pounds in 2020
£10,000 pounds in 1970 £157,576.98 pounds in 2020
£50,000 pounds in 1970 £787,884.90 pounds in 2020
£100,000 pounds in 1970 £1,575,769.80 pounds in 2020
£500,000 pounds in 1970 £7,878,849.00 pounds in 2020
£1,000,000 pounds in 1970 £15,757,698.00 pounds in 2020

## How to Calculate Inflation Rate for £100, 1970 to 2020

Our calculations use the following inflation rate formula to calculate the change in value between 1970 and 2020:

CPI in 2020 CPI in 1970
×
1970 GBP value
=
2020 GBP value

Then plug in historical CPI values. The U.K. CPI was 73.1 in the year 1970 and 1151.88772393 in 2020:

1151.8877239373.1
×
£100
=
£1,575.77

£100 in 1970 has the same "purchasing power" or "buying power" as £1,575.77 in 2020.

To get the total inflation rate for the 50 years between 1970 and 2020, we use the following formula:

CPI in 2020 - CPI in 1970CPI in 1970
×
100
=
Cumulative inflation rate (50 years)

Plugging in the values to this equation, we get:

1151.88772393 - 73.173.1
×
100
=
1,476%

Politics and news often influence economic performance. Here's what was happening at the time:

• January 1st, 1970 established as Epoch time for UNIX systems.
• Rhodesia declares independence and sets up a republican government.
• Aswan Dam opens in Egypt to prevent flooding of the Nile River.
• A Palestinian terrorist organization hijacks three aircrafts in an incident that is later known as Black September.

## 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 2017, which is based on The Bank of England's forecast.

You may use the following MLA citation for this page: “£100 in 1970 → 2020 | UK Inflation Calculator.” Official Inflation Data, Alioth Finance, 6 May. 2021, https://www.officialdata.org/uk/inflation/1970?amount=100&endYear=2020.

Special thanks to QuickChart for their chart image API, which is used for chart downloads.

in2013dollars.com is a reference website maintained by the Official Data Foundation.