Inflation in Japan
Consumer prices in Japan have risen 275.6% since January 1970, the start of the official series. That means ¥100 then buys what ¥375.65 buys in June 2026, so the same basket of goods now costs 3.8 times what it did. Over the most recent year on record, June 2025 to June 2026, prices rose 1.8%.
Cumulative & Yearly Inflation
What ¥100 would be worth today
Each row takes ¥100 at that date and shows the equivalent sum in June 2026, the most recent month on record for Japan.
| Date | Amount then | Worth today | Change |
|---|---|---|---|
| January 1970 | ¥100.00 | ¥375.65 | 275.6% |
| January 1990 | ¥100.00 | ¥128.99 | 29.0% |
| January 2000 | ¥100.00 | ¥116.63 | 16.6% |
| January 2020 | ¥100.00 | ¥113.10 | 13.1% |
How inflation in Japan is measured
The figures above come from the Statistics Bureau of Japan (e-Stat dataset 0003427113). The series is indexed so that a chosen base year equals 100, and the calculator works out the ratio between any two dates you pick.
Coverage runs from January 1970 to June 2026, and updates automatically as each new release is published. Figures for the most recent periods can be revised by the statistics office after first publication.