Value of £1 from 1870 to 1866
£1 in 1870 is equivalent in purchasing power to about £1 in 1866, an increase of £0.00 over 4 years. The pound had an average inflation rate of 0.00% per year between 1866 and 1870, producing a cumulative price increase of 0.00%.
The inflation rate in 1866 was 5.56%. The inflation rate in 1870 was 0.00%. The 1870 inflation rate is lower compared to the average inflation rate of 3.29% per year between 1870 and 2025.
⌃
| Average inflation rate | 0.00% |
| Converted amount £1 base | £1 |
| Price difference £1 base | £0.00 |
| CPI in 1870 | 9.500 |
| CPI in 1866 | 9.500 |
| Inflation in 1866 | 5.56% |
| Inflation in 1870 | 0.00% |
| £1 in 1870 | £1 in 1866 |
Buying power of £1 in 1866
This chart shows a calculation of buying power equivalence for £1 in 1866 (price index tracking began in 1750).
For example, if you started with £1, you would need to end with £1 in order to "adjust" for inflation (sometimes refered to as "beating inflation").
When £1 is equivalent to £1 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 1866 dollars, the chart below shows how £1 is worth less over 4 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 1866 amounts in 1870 pounds, based on the 0.00% change in prices:
| Initial value | Equivalent value |
|---|---|
| £1 pound in 1866 | £1.00 pounds in 1870 |
| £5 pounds in 1866 | £5.00 pounds in 1870 |
| £10 pounds in 1866 | £10.00 pounds in 1870 |
| £50 pounds in 1866 | £50.00 pounds in 1870 |
| £100 pounds in 1866 | £100.00 pounds in 1870 |
| £500 pounds in 1866 | £500.00 pounds in 1870 |
| £1,000 pounds in 1866 | £1,000.00 pounds in 1870 |
| £5,000 pounds in 1866 | £5,000.00 pounds in 1870 |
| £10,000 pounds in 1866 | £10,000.00 pounds in 1870 |
| £50,000 pounds in 1866 | £50,000.00 pounds in 1870 |
| £100,000 pounds in 1866 | £100,000.00 pounds in 1870 |
| £500,000 pounds in 1866 | £500,000.00 pounds in 1870 |
| £1,000,000 pounds in 1866 | £1,000,000.00 pounds in 1870 |
How to calculate inflation rate for £1, 1866 to 1870
Our calculations use the following inflation rate formula to calculate the change in value between 1866 and 1870:
CPI in 1866 CPI in 1870
×
1870 GBP value
=
1866 GBP value
Then plug in historical CPI values. The U.K. CPI was 9.5 in the year 1870 and 9.5 in 1866:
9.59.5
×
£1
=
£1
£1 in 1870 has the same "purchasing power" or "buying power" as £1 in 1866.
To get the total inflation rate for the 4 years between 1866 and 1870, we use the following formula:
CPI in 1866 - CPI in 1870CPI in 1870
×
100
=
Cumulative inflation rate (4 years)
Plugging in the values to this equation, we get:
9.5 - 9.59.5
×
100
=
0%
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: “£1 in 1870 → 1866 | UK Inflation Calculator.” Official Inflation Data, Alioth Finance, 14 Mar. 2025, https://www.officialdata.org/uk/inflation/1870?amount=1&endYear=1866.
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.
| Average inflation rate | 0.00% |
| Converted amount £1 base | £1 |
| Price difference £1 base | £0.00 |
| CPI in 1870 | 9.500 |
| CPI in 1866 | 9.500 |
| Inflation in 1866 | 5.56% |
| Inflation in 1870 | 0.00% |
| £1 in 1870 | £1 in 1866 |
