Kids' underwear
Average retail price
- Cheapest surveyed city
- ¥686 Kashiwa
- Priciest surveyed city
- ¥1,210 Otsu
Retail price survey conducted by the Statistics Bureau of Japan. This is a survey average, not a shop price — actual prices vary by store. 総務省統計局 小売物価統計調査 · Surveyed items and specifications
Key facts
Kids' underwear costs ¥991 per pack in Japan as of August 2026 — the unweighted average of 81 surveyed cities, down 1.3% from a year earlier. Measured as an index, the official CPI for kids' underwear reads 113.6 (2020 = 100) in August 2026, down 1.9% year on year and up 13.6% over five years.
Kids' underwear sits in the clothing & footwear group of Japan's CPI basket, with 584 monthly observations from April 1971 to August 2026. The series peaked at 118.0 in November 2025 and bottomed at 38.6 in April 1971; the latest reading is -3.7% against that peak. Against ten years ago it is +23.1%.
Annual average index by year
| Year | Index | YoY % | Months |
|---|---|---|---|
| 2015 | 90.6 | +3.0% | 12 |
| 2016 | 92.6 | +2.2% | 12 |
| 2017 | 94.8 | +2.4% | 12 |
| 2018 | 97.0 | +2.3% | 12 |
| 2019 | 97.8 | +0.8% | 12 |
| 2020 | 100.0 | +2.2% | 12 |
| 2021 | 100.1 | +0.1% | 12 |
| 2022 | 101.1 | +1.0% | 12 |
| 2023 | 107.9 | +6.7% | 12 |
| 2024 | 113.0 | +4.7% | 12 |
| 2025 | 115.8 | +2.5% | 12 |
| 2026 | 115.8 | 0.0% | 8 |
Average of the monthly index values in each year (2020 = 100). Blank months are excluded.
Average retail price by month
| 2026-08 | ¥991 |
|---|---|
| 2026-07 | ¥999 |
| 2026-06 | ¥1,004 |
| 2026-05 | ¥1,018 |
| 2026-04 | ¥1,024 |
| 2026-03 | ¥1,010 |
| 2026-02 | ¥1,011 |
| 2026-01 | ¥1,023 |
| 2025-12 | ¥1,030 |
| 2025-11 | ¥1,034 |
| 2025-10 | ¥1,020 |
| 2025-09 | ¥1,022 |
| 2025-08 | ¥1,004 |
Frequently asked questions
- How much does kids' underwear cost in Japan?
- ¥991 per pack, as of August 2026 — the unweighted average of 81 surveyed cities in the government's retail price survey.
- Which Japanese city has the cheapest kids' underwear?
- Among the surveyed cities in August 2026, Kashiwa was cheapest at ¥686 and Otsu the most expensive at ¥1,210.
- How much have kids' underwear prices changed in Japan over the past year?
- As of August 2026, -1.9% year on year, measured by Japan's official consumer price index (2020 = 100).
- How much have kids' underwear prices changed in Japan over the past five years?
- +13.6% compared with the same month five years earlier. The index now reads 113.6.
- When were kids' underwear prices in Japan at their highest?
- The series peaked at 118.0 in November 2025. The latest reading is -3.7% against that peak.
- What is the difference between the index and the yen price?
- This page carries two kinds of number. The index (2020 = 100) measures percentage change over time and is not a yen amount; the yen figure is an actual average retail price from the government's retail price survey. Source: 総務省統計局 消費者物価指数 (e-Stat table 0003427113, nationwide, monthly).