UK Inflation Calculator
What money from past years is worth today, using official CPI.
Your details
£
£1,000 in 2015 is like
£1,436.00
in August 2026
- Total price change
- +43.6%
- Average a year
- 3.32%
- CPI in 2015
- 100.0
- CPI in August 2026
- 143.6
Uses the Consumer Prices Index (CPI, 2015 = 100) from the Office for National Statistics, series D7BT. Years use the annual average; the latest figure is for August 2026. Your own costs may have risen faster or slower than the average.
How it is worked out
- 1The calculator uses the Consumer Prices Index (CPI) published by the Office for National Statistics.
- 2The value in the later year is the amount multiplied by the later CPI and divided by the earlier CPI.
- 3The average yearly rate spreads the total change evenly over the years between the two dates.
Worth knowing
- Yearly figures are annual averages; the latest figure is the most recent month published.
- Prices for things you buy may have risen faster or slower than the overall index.
Common questions
How much has inflation risen since 2020?+
The CPI was 108.7 on average in 2020 and 143.6 in August 2026, a rise of about 32%.
Sources
The rules and figures behind this calculator come from:
Figures use the official Consumer Prices Index from the Office for National Statistics. Past inflation does not predict future price changes.
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