# £100,000 in 1920 is worth £4,248,616.60 in 2017

£

## Value of £100,000 from 1920 to 2017

£100,000 in 1920 is equivalent in purchasing power to about £4,248,616.60 in 2017, an increase of £4,148,616.60 over 97 years. The pound had an average inflation rate of 3.94% per year between 1920 and 2017, producing a cumulative price increase of 4,148.62%.

This means that prices in 2017 are 42.49 times as high as average prices since 1920, according to the Office for National Statistics composite price index.

The inflation rate in 1920 was 15.53%. The inflation rate in 2017 was 3.58%. The 2017 inflation rate is lower compared to the average inflation rate of 5.08% per year between 2017 and 2023.

 Cumulative price change 4,148.62% Average inflation rate 3.94% Converted amount (£100,000 base) £4,248,616.60 Price difference (£100,000 base) £4,148,616.60 CPI in 1920 25.300 CPI in 2017 1,074.900 Inflation in 1920 15.53% Inflation in 2017 3.58% £100,000 in 1920 £4,248,616.60 in 2017

GBP inflation since 1920
Annual Rate, the Office for National Statistics CPI

## Buying power of £100,000 in 1920

This chart shows a calculation of buying power equivalence for £100,000 in 1920 (price index tracking began in 1750).

For example, if you started with £100,000, you would need to end with £4,248,616.60 in order to "adjust" for inflation (sometimes refered to as "beating inflation").

When £100,000 is equivalent to £4,248,616.60 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 1920 dollars, the chart below shows how £100,000 is worth less over 97 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: 1920-2017
YearPound ValueInflation Rate
1920£100,000.0015.53%
1921£91,304.35-8.70%
1922£78,656.13-13.85%
1923£73,913.04-6.03%
1924£73,517.79-0.53%
1925£73,517.790.00%
1926£73,122.53-0.54%
1927£71,146.25-2.70%
1928£71,146.250.00%
1929£70,355.73-1.11%
1930£68,379.45-2.81%
1931£65,612.65-4.05%
1932£64,031.62-2.41%
1933£62,450.59-2.47%
1934£62,450.590.00%
1935£62,845.850.63%
1936£63,241.110.63%
1937£65,612.653.75%
1938£66,403.161.20%
1939£68,379.452.98%
1940£79,841.9016.76%
1941£88,537.5510.89%
1942£94,861.667.14%
1943£98,023.723.33%
1944£100,790.512.82%
1945£103,557.312.75%
1946£106,719.373.05%
1947£114,229.257.04%
1948£122,924.907.61%
1949£126,482.212.89%
1950£130,434.783.13%
1951£142,292.499.09%
1952£155,335.979.17%
1953£160,079.053.05%
1954£163,241.111.98%
1955£170,355.734.36%
1956£179,051.385.10%
1957£185,375.493.53%
1958£191,304.353.20%
1959£192,094.860.41%
1960£194,071.151.03%
1961£200,790.513.46%
1962£209,486.174.33%
1963£213,438.741.89%
1964£220,553.363.33%
1965£230,830.044.66%
1966£239,920.953.94%
1967£246,245.062.64%
1968£257,707.514.65%
1969£271,541.505.37%
1970£288,932.816.40%
1971£316,205.539.44%
1972£338,735.187.13%
1973£369,565.229.10%
1974£428,853.7516.04%
1975£532,806.3224.24%
1976£620,948.6216.54%
1977£719,367.5915.85%
1978£779,051.388.30%
1979£883,399.2113.39%
1980£1,042,292.4917.99%
1981£1,166,007.9111.87%
1982£1,266,403.168.61%
1983£1,324,505.934.59%
1984£1,390,513.834.98%
1985£1,475,098.816.08%
1986£1,525,296.443.40%
1987£1,588,932.814.17%
1988£1,666,798.424.90%
1989£1,796,442.697.78%
1990£1,966,403.169.46%
1991£2,081,818.185.87%
1992£2,159,683.793.74%
1993£2,194,071.151.59%
1994£2,247,035.572.41%
1995£2,324,901.193.47%
1996£2,381,027.672.41%
1997£2,455,731.233.14%
1998£2,539,920.953.43%
1999£2,579,051.381.54%
2000£2,655,335.972.96%
2001£2,702,371.541.77%
2002£2,747,430.831.67%
2003£2,826,877.472.89%
2004£2,911,067.192.98%
2005£2,993,280.632.82%
2006£3,088,932.813.20%
2007£3,221,343.874.29%
2008£3,349,802.373.99%
2009£3,332,015.81-0.53%
2010£3,485,770.754.61%
2011£3,667,193.685.20%
2012£3,784,980.243.21%
2013£3,900,000.003.04%
2014£3,992,094.862.36%
2015£4,031,620.550.99%
2016£4,101,581.031.74%
2017£4,248,616.603.58%
2018£4,363,329.252.70%
2019£4,472,412.482.50%
2020£4,552,915.901.80%
2021£4,666,359.392.49%
2022£5,165,659.8610.70%
2023£5,718,385.4710.70%*
* Compared to previous annual rate. Not final. See inflation summary for latest 12-month trailing value.
Click to show 91 more rows

This conversion table shows various other 1920 amounts in 2017 pounds, based on the 4,148.62% change in prices:

Conversion: 1920 pounds in 2017
Initial valueEquivalent value
£1 pound in 1920£42.49 pounds in 2017
£5 pounds in 1920£212.43 pounds in 2017
£10 pounds in 1920£424.86 pounds in 2017
£50 pounds in 1920£2,124.31 pounds in 2017
£100 pounds in 1920£4,248.62 pounds in 2017
£500 pounds in 1920£21,243.08 pounds in 2017
£1,000 pounds in 1920£42,486.17 pounds in 2017
£5,000 pounds in 1920£212,430.83 pounds in 2017
£10,000 pounds in 1920£424,861.66 pounds in 2017
£50,000 pounds in 1920£2,124,308.30 pounds in 2017
£100,000 pounds in 1920£4,248,616.60 pounds in 2017
£500,000 pounds in 1920£21,243,083.00 pounds in 2017
£1,000,000 pounds in 1920£42,486,166.01 pounds in 2017

## How to calculate inflation rate for £100,000, 1920 to 2017

Our calculations use the following inflation rate formula to calculate the change in value between 1920 and 2017:

CPI in 2017 CPI in 1920
×
1920 GBP value
=
2017 GBP value

Then plug in historical CPI values. The U.K. CPI was 25.3 in the year 1920 and 1074.9 in 2017:

1074.925.3
×
£100,000
=
£4,248,616.60

£100,000 in 1920 has the same "purchasing power" or "buying power" as £4,248,616.60 in 2017.

To get the total inflation rate for the 97 years between 1920 and 2017, we use the following formula:

CPI in 2017 - CPI in 1920CPI in 1920
×
100
=
Cumulative inflation rate (97 years)

Plugging in the values to this equation, we get:

1074.9 - 25.325.3
×
100
=
4,149%

## 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: “£100,000 in 1920 → 2017 | UK Inflation Calculator.” Official Inflation Data, Alioth Finance, 28 Mar. 2023, https://www.officialdata.org/1920-GBP-in-2017?amount=100000.

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.