£100 in 1917 is worth £9,746 today
What pounds from 1917 are worth in 2025 money, adjusted for inflation with the official price index from the UK Office for National Statistics.
1917 money in 2025 money
- Prices since
- +9646.0%
- Per year
- +4.33% compounded
- Multiplier
- ×97.460
| In 1917 | Worth in 2025 |
|---|---|
| £1 | £97.46 |
| £5 | £487 |
| £10 | £975 |
| £20 | £1,949 |
| £50 | £4,873 |
| £100 | £9,746 |
| £1,000 | £97,460 |
| £10,000 | £974,601 |
UK Office for National Statistics — Retail Prices Index: long run series, Jan 1974 = 100. Retrieved 2026-08-06. Open in the calculator to compare any two years.
Inflation in 1917
Prices in the UK rose 25.4% during 1917, the 1st highest rate in all 225 years this series covers. Across the 1910s, prices rose an average of 9.1% a year, peaking at 25.4% in 1917.
| Year | Rate | Bar |
|---|---|---|
| 1910 | +1.1% | |
| 1911 | 0.0% | |
| 1912 | +3.1% | |
| 1913 | −1.0% | |
| 1914 | 0.0% | |
| 1915 | +12.2% | |
| 1916 | +18.2% | |
| 1917 | +25.4% | |
| 1918 | +22.1% | |
| 1919 | +10.1% |
How far the pound has fallen since 1917
A pound in 2025 buys about 1.0% of what one bought in 1917, a loss of 99.0% of its buying power. Prices had doubled from their 1917 level by 1950, 33 years later. Read the other way, here is what today's money would have been in 1917:
| In 2025 | Same as, in 1917 |
|---|---|
| £10 | £0.10 |
| £20 | £0.21 |
| £50 | £0.51 |
| £100 | £1.03 |
| £1,000 | £10.26 |
| £10,000 | £103 |
What these numbers can and cannot tell you
The figures compare the price index in 1917 with 2025: the cost of the same broad basket of goods and services, averaged across each year. That is the right measure for "what would this amount be in today's money" — a wage, a price, an inheritance. It is not a measure of what any particular thing cost: housing, education, and healthcare have mostly risen faster than the average, while electronics and clothing have risen far slower or fallen. And it says nothing about exchange rates, so it cannot turn 1917 pounds into another currency.
Common questions
How much is £100 from 1917 worth today?
£100 in 1917 is worth about £9,746 in 2025 money, adjusted with the official price index published by the UK Office for National Statistics. Prices have risen 9,646.0% over that span, an average of 4.33% a year compounded.
What was the inflation rate in 1917?
Prices in the UK rose 25.4% during 1917, the 1st highest rate in all 225 years this series covers. That is the change in the annual average of the index from 1916 to 1917, which is the basis statistics agencies use for long-run comparison; a news headline quoting a twelve-month change at a particular point in 1917 may differ.
How much buying power has the pound lost since 1917?
About 99.0%. Put the other way round, £100 in 2025 would have bought what £1.03 bought in 1917. Prices had doubled from their 1917 level by 1950, 33 years later.
1917 in other countries: United States , Canada .