£100 in 1970 is worth £1,674 today (UK CPI)
£1,674
Updated March 1, 2025 · ONS / FRED
£100 in 1970 is worth £1,674.03 in today's pounds, adjusted by British consumer-price inflation (UK CPI), which rose 1,574% since then. ONS / FRED data through March 1, 2025.
At the start of the 1970s, £100 was a meaningful amount for a working household, before the decade's great inflation took hold. The 1973–74 oil shock soon sent consumer prices soaring, peaking around the middle of the decade at the highest rate in the modern record. That surge is why matching this sum's purchasing power now takes many times the figure in today's pounds.
UK CPI before 1997 splices the historical retail-price record. Values are in pounds sterling, continuous since the 1971 decimalisation. This tracks consumer-price inflation, not exchange rates or investment returns.
Year by year
| Year | Equivalent value |
|---|---|
| 1970 | £107 |
| 1980 | £390 |
| 1990 | £701 |
| 2000 | £910 |
| 2010 | £1,128 |
| 2020 | £1,346 |
| 2025 | £1,674 |
Selected milestones; the math uses every month of the official series.
Put differently: what cost £100 in 1970 costs £1,674.03 today. A pound from 1970 buys only 6% of what it bought then — prices multiplied 16.7× over the period.
The 1970s were Britain's great inflation: the 1973–74 oil shock drove consumer prices up by around 24% in 1975, the highest in the modern record, before they eased later in the decade.
Frequently asked questions
How is the value of £100 from 1970 calculated?
We divide today's UK CPI index level by the 1970 level, sourced from ONS / FRED. The cumulative change is 1,574% — a factor of 16.74.
Which inflation measure is used?
UK Consumer Price Index (CPI), the standard official gauge of consumer-price inflation in the UK, retrieved via FRED. The latest available reading is March 1, 2025.
Does this include investment returns?
No. This is a pure purchasing-power adjustment in pounds — it measures inflation, not what the money would have earned if invested or moved into another currency.
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Descriptive, educational content computed from official public data. Not investment advice. Past performance does not guarantee future results.