Hobonichi Techo

Hobonichi Co., Ltd. runs the content site "Hobonichi" and also plans, develops, and sells products such as the Hobonichi Techo and the Hobonichi Earthball. The company was founded on December 24, 1979, and its headquarters are in Chiyoda-ku, Tokyo. Over the years, the planner has grown alongside guides and articles that help people find a style that fits their lives.

At the center are the one-page-per-day formats: Original (A6) and Cousin (A5). Pages use a 3.7 mm grid and include planning-friendly elements like a 24-hour timeline and a TO DO area. Tomoe River paper keeps the book light even with many pages, and the thread binding opens flat for easy writing. "Words" appear as daily (or weekly) quotes, adding a signature Hobonichi touch.

The lineup is designed to match different routines. Original is compact for carry-everywhere planning, while Cousin offers more space and includes a vertical weekly diary unique to the Cousin format. Weeks pairs a weekly schedule on the left with grid notes on the right, plus extra grid pages in the back. Day-Free combines monthly calendars with grid notes for flexible writing. HON, the English Planner, Avec (split into two books), and the 5-Year Techo expand the choices further.

Beyond the book itself, there are covers, pencil boards, and plenty of companion items. Day-Free also has a dedicated cover style called BS Lite, and shared cover sizing makes switching easy across certain formats. The official site gathers format guides and lineup overviews in one place, so choosing your first book feels less intimidating. Hobonichi also runs real-world spaces like TOBICHI (a shop and gallery), giving the planner's world a physical home, too.

A 3.7 mm grid that stays out of your way

Most pages are built on Hobonichi's 3.7 mm grid. Small handwriting, quick lists, and sketches all sit neatly on the same rhythm. Monthly calendar pages use a 3.45 mm grid, keeping busy dates easy to scan.

Thread-stitched binding that opens flat

The planners use a thread-stitched binding that opens to a flat 180 degrees. You can write without holding the book down, whether on a desk or on the go. Rounded corners also help protect pages inside your bag.

Tomoe River paper: thin, light, and durable

Hobonichi uses Tomoe River paper, made for planners. It's thin and light, yet tough enough for everyday use. The smooth surface and ink-friendly feel make long-form writing surprisingly comfortable.

Choose your format, keep the "Words"

Original and Cousin offer a full page per day, Weeks uses a weekly-left layout, and Day-Free blends monthly calendars with grid notes. Across formats, "Words" add a small reading moment, so the planner feels like a book too.