The datasets behind The Matcha Index articles are published here so anyone can verify our numbers or build on them. Files are updated when we re-collect; each filename carries its collection date.
Matcha price dataset
292 products and size variants from the official online stores of 12 brands (13 storefronts), collected August 24, 2026: brand, product, price, net weight, price per gram, labeled grade, and named cultivar where disclosed.
Download CSV — matcha_prices_2026-08-24.csv
Buyer-review dataset
1,762 verified-buyer reviews published on the official stores of Rocky’s Matcha, Naoki Matcha, and Nekohama (February 2020 – August 2026), collected via the stores’ public review widgets: brand, product, rating, review title, review text, date. Capped at the most recent 100 reviews per product by the widget API.
Download CSV — matcha_reviews_okendo_2026-08-24.csv
Use and citation
Free to use for any purpose with attribution: “The Matcha Index (thematchaindex.com)”, with a link. If you spot an error, email info@thematchaindex.com and we’ll correct the dataset and note the change here.
Method in one paragraph
Prices and weights come from each brand’s public store feed, collected on the date in the filename, covering every listed product (no sampling). Weights listed in ounces are converted at 1 oz = 28.35 g. Listings without a computable net weight are included in the file but excluded from per-gram statistics. Reviews come from the brands’ public review widgets and are verified-buyer entries as labeled by those systems.