B6 vs B5 Planner: Size and Layout Comparison
By MUJI USA | Published: 2026-10-17
Category: Comparisons
Compare MUJI's B6 and B5 monthly/weekly planners to find the right size and layout for your daily planning style.
Quick answer
Choose the B5 if you need room for detailed notes, habit tracking, or daily journaling on grid pages. Pick the B6 if portability and hourly scheduling matter more. Both MUJI planners start in December 2026 and use a Monday-start weekly layout.
Size and portability
The B5 Monthly/Weekly Planner measures roughly 7 by 10 inches—similar to a standard composition notebook. It fits well in a larger tote bag or backpack but may not slip into a small crossbody or clutch. The B6 planners (both vertical and horizontal versions) are about 5 by 7 inches, roughly the size of a paperback book. They slide easily into most handbags, work totes, or even a coat pocket.
Layout differences
All three planners share a Monday-start weekly spread, but the B5 and the standard B6 horizontal version use a left-page weekly layout with optional guides to divide your day into thirds or separate tasks by topic. The right-hand grid pages are blank for extra notes, habit tracking, or doodling. The B6 Vertical Monthly/Weekly Planner, on the other hand, uses a vertical hourly layout on the weekly pages—ideal for time-blocking appointments or work shifts.
Trade-offs to consider
- B5 horizontal vs B6 horizontal: Both use the same left-page weekly / right-page grid layout, but the B5 has significantly more writing area. The B6 horizontal is more portable but limits how much you can jot per day. Choose B5 for spacious planning; choose B6 horizontal for everyday carry.
- B6 horizontal vs B6 vertical: The B6 horizontal offers grid pages for open-ended notes; the B6 vertical uses an hourly timeline that works best for time-sensitive schedules. You lose the grid pages with the vertical version. Pick horizontal if you like mixed planning and journaling; pick vertical if you live by the clock.
- Cover and durability: The B6 vertical planner has a vinyl cover that resists spills and stains. The B5 and B6 horizontal planners do not specify a special cover material, so they may be less protected in a bag. If you carry your planner in a crowded bag, the vinyl cover adds peace of mind.
Planner features at a glance
- B5 Monthly/Weekly Planner From Dec. 2026 - Mon. Start: B5 Monthly/Weekly Planner with horizontal Monday-start weekly spreads and right-hand grid pages for extra noteaking. The larger B5 gives you more writing space per week and dedicated grid pages for journaling or tracking habits—great if you prefer one planner for both scheduling and reflection.
- B6 Vertical Monthly/Weekly Planner From Dec. 2026: B6 Vertical Monthly/Weekly Planner with hourly vertical weekly layout and a vinyl cover that protects from spills and stains. The vertical layout suits hourly scheduling, and the vinyl cover adds durability for daily carry. The smaller size also includes a pocket for cards or folded papers.
Which planner fits you?
Best for
- Detailed note-takers who want grid pages for journaling or habit tracking
- People who carry a larger bag and prefer one all-in-one planning and reflection tool
Not for
- Minimalists who need a planner that slips into a small bag
- Hourly schedulers who prefer a vertical time-block layout
