### Purchasing Power of British Pounds from 1264 to 2007

The measures used in this calculator are the longest series of their
kind: the retail price index and an index of average earnings. See a discussion of
Using the Retail Price Index (RPI). Other comparison series
might be preferable, depending on the context of the question. For
more choices but with a shorter time period, consult
Five Ways to Compute the Relative Value of a UK
Pound Amount, 1830 - 2006, where you will also find further discussion of
this issue.

To determine the value of an amount of money in a particular
("original") year compared to another ("desired") year, enter the
values in the appropriate places below. For example, you may want to
know: How much money would you need in the year *2007*, to have the
same "purchasing power" of *£5* in year *1900*. If you entered these
values in the correct places, you will find that the answers are *£387.90* and *£2,105.05*.

Prior to February 15, 1971 ("Decimal day," or "D-day"), monetary
amounts in the U.K. were expressed as pounds (£),
shillings (s.) and pence (d.), where £1 = 20s. = 240d. After 1970,
there were 100 pennies in a pound, so one (new) penny = 2.4 old pence.
All numbers should be entered in decimal rather than fractional
form (for example, 1.5 rather than 1 1/2).

##### Citation

Lawrence H. Officer, "Purchasing Power of British Pounds from 1264 to 2007." MeasuringWorth, 2008.

Please read our
Note on Data Revisions.

##### Copyright Notice

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