Value of £100 from 1775 to 1914
£100 in 1775 is equivalent in purchasing power to about £140 in 1914, an increase of £40.00 over 139 years. The pound had an average inflation rate of 0.24% per year between 1775 and 1914, producing a cumulative price increase of 40.00%.
This means that prices in 1914 are 1.40 times as high as average prices since 1775, according to the Office for National Statistics composite price index.
The inflation rate in 1775 was -6.67%. The inflation rate in 1914 was 0.00%. The 1914 inflation rate is lower compared to the average inflation rate of 4.57% per year between 1914 and 2026.
⌃
| Cumulative price change | 40.00% |
| Average inflation rate | 0.24% |
|
Converted amount £100 base | £140 |
|
Price difference £100 base | £40.00 |
| CPI in 1775 | 7.000 |
| CPI in 1914 | 9.800 |
| Inflation in 1775 | -6.67% |
| Inflation in 1914 | 0.00% |
| £100 in 1775 | £140 in 1914 |
Buying power of £100 in 1775
This chart shows a calculation of buying power equivalence for £100 in 1775 (price index tracking began in 1750).
For example, if you started with £100, you would need to end with £140 in order to "adjust" for inflation (sometimes refered to as "beating inflation").
When £100 is equivalent to £140 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 1775 dollars, the chart below shows how £100 is worth less over 139 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:
This conversion table shows various other 1775 amounts in 1914 pounds, based on the 40.00% change in prices:
| Initial value | Equivalent value |
|---|---|
| £1 pound in 1775 | £1.40 pounds in 1914 |
| £5 pounds in 1775 | £7.00 pounds in 1914 |
| £10 pounds in 1775 | £14.00 pounds in 1914 |
| £50 pounds in 1775 | £70.00 pounds in 1914 |
| £100 pounds in 1775 | £140.00 pounds in 1914 |
| £500 pounds in 1775 | £700.00 pounds in 1914 |
| £1,000 pounds in 1775 | £1,400.00 pounds in 1914 |
| £5,000 pounds in 1775 | £7,000.00 pounds in 1914 |
| £10,000 pounds in 1775 | £14,000.00 pounds in 1914 |
| £50,000 pounds in 1775 | £70,000.00 pounds in 1914 |
| £100,000 pounds in 1775 | £140,000.00 pounds in 1914 |
| £500,000 pounds in 1775 | £700,000.00 pounds in 1914 |
| £1,000,000 pounds in 1775 | £1,400,000.00 pounds in 1914 |
How to calculate inflation rate for £100, 1775 to 1914
Our calculations use the following inflation rate formula to calculate the change in value between 1775 and 1914:
CPI in 1914CPI in 1775
×
1775 GBP value
=
1914 GBP value
Then plug in historical CPI values. The U.K. CPI was 7 in the year 1775 and 9.8 in 1914:
9.87
×
£100
=
£140
£100 in 1775 has the same "purchasing power" or "buying power" as £140 in 1914.
To get the total inflation rate for the 139 years between 1775 and 1914, we use the following formula:
CPI in 1914 - CPI in 1775CPI in 1775
×
100
=
Cumulative inflation rate (139 years)
Plugging in the values to this equation, we get:
9.8 - 77
×
100
=
40%
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: “£100 in 1775 → 1914 | UK Inflation Calculator.” Official Inflation Data, Alioth Finance, 19 Jan. 2026, https://www.officialdata.org/uk/inflation/1775?amount=100&endYear=1914.
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.
| Cumulative price change | 40.00% |
| Average inflation rate | 0.24% |
|
Converted amount £100 base | £140 |
|
Price difference £100 base | £40.00 |
| CPI in 1775 | 7.000 |
| CPI in 1914 | 9.800 |
| Inflation in 1775 | -6.67% |
| Inflation in 1914 | 0.00% |
| £100 in 1775 | £140 in 1914 |