Is the Hobonichi A5 Too Big for You? 3 Quick Tests Before You Buy

You have seen the pretty spreads online. Big pages, tidy time blocks, stickers everywhere. Now you want a Hobonichi A5 of your own. But then a small voice asks: "Will this thing be too big?"

It is a fair question. The Hobonichi A5 is a lovely planner. It is also large. Some people buy it, love it for a week, and then leave it on a shelf.

This guide helps you decide before you spend the money. You will learn what the A5 is, how big it feels in real life, and who it suits. You will also get three simple tests, plus tips to make it feel smaller if you still want one.

What Is the Hobonichi A5?

The Hobonichi A5 is a daily planner made by Hobonichi in Japan. The best-known A5 model is the Hobonichi Cousin. It measures 148 mm by 210 mm, which is about twice the size of the small Original book. Think of it as a Hobonichi day planner with room to spare.

Inside, you get three parts:

• Monthly calendars for the big picture.
• Weekly spreads with a 24-hour timetable, one week per spread.
• Daily pages for every day of the year, also with a timetable.

It uses thin Tomoe River paper and a lay-flat binding, so it opens flat on your desk. Most people who say "Hobonichi A5" mean this Cousin book.

If you want to know why people love the brand, read what makes the Hobonichi Techo special.

Not All Hobonichi A5 Books Are the Same

"Hobonichi A5" is really a size, not one single book. Hobonichi sells a few A5 books, and each one carries a different amount of bulk. This matters, since the weight is often the real worry, not the page size.

If the full Cousin sounds heavy, the Avec or Day-Free give you the same A5 page size with far less weight in your bag. Keep this in mind as you go through the tests below, since a lighter A5 book can pass the bag test that a full-year Cousin fails.

How Big Is It, Really?

On paper, A5 is not huge. It is a common notebook size. But a Hobonichi planner is thick, and it gets thicker once you add a cover, stickers, tickets and notes.

Comparison of different sizes of Hobonichi planners

Here is how the size feels in daily life:

• In a tote or backpack: Fine. It fits most work bags next to a laptop.
• In a small handbag or sling bag: Tight. Many people find it will not fit at all.

Some users also point out that the Cousin gets heavier once you add accessories or keep keepsakes inside. That extra weight matters if you carry it every day.

So the real question is not "how big is it?" It is "how will you use it?"

Browse Hobonichi A5 collections

Test 1: The Bag Test

Look at the bag you carry most days. Now imagine a thick A5 book inside it, every single day.

Pass the test if:

• You carry a tote, backpack or work bag.
• You are happy to keep the planner at home or at your desk.

Fail the test if:

• You carry a small bag or a sling.
• You plan to jot things down on the go.

If you fail this test, look at the Hobonichi A6 instead. It is much easier to carry. The Hobonichi size you pick should match the bag you use, not the planner you saw online.

Test 2: The Page Test

This is the test people forget. A big page is only good if you fill it.

One reader wrote that she never used the daily section of her Cousin. Her old A6 entries filled less than half an A5 page. The big pages felt wasted, and she called the purchase a loss.

Ask yourself:

• Do I write more than a few lines each day?
• Do I like to draw, list, or plan hour by hour?
• Do I enjoy collecting stickers and small mementos?

If you answered yes to at least two, the Hobonichi A5 will probably suit you. If you write only a line or two a day, the pages may feel empty. Empty pages can make you feel guilty, and guilt kills a planner habit fast.

Test 3: The Habit Test

Be honest about how you plan today.

You are a good match for a Hobonichi planner this big if you:

• Have a busy week full of meetings or appointments.
• Like time blocking, where you give every task a slot.
• Juggle several projects at once.
• Enjoy decorating pages with washi tape and Hobonichi stickers.

You may want something smaller if you:

• Only write short to-do lists.
• Prefer to design your own layouts each month.
• Have never kept a planner for more than a few weeks.

That last point is worth repeating. A planner you use in a small size beats a big one you ignore.

Who Loves the Hobonichi A5?

A page from Hobonichi Cousin (A5)

Here are the people who tend to get the most from it:

1. The side hustler. If you work for yourself or run a small project, the weekly spread gives you a clear view of deadlines and tasks.
2. The creative artist. One user treats her Cousin as a daily art practice. Some days are lists, some days are sketches, and most days are a mix.
3. The sticker lover. Big pages mean more space for Hobonichi stickers, tape and photos.

Hobonichi A5 vs A6: Which One Should You Pick?

Here is a quick comparison of the two most popular sizes:

A simple rule helps. If you have never filled a daily planner page, start with the A6. If you already run out of room in small books, go for the A5.

If you pick the A5, the Cousin's "Secret Line" divider and 3.7 mm graph paper make its big pages easy to fill: plan on one side of the line, jot notes or draw on the other. Many users follow a 60/40 split, schedule first, notes after.

Which Cover and Extras Do You Need for the Hobonichi A5?

A good Hobonichi planner cover protects the book and adds pockets, pen loops and a place for cards. But covers also add weight, so pick with care.

• A slim cover is best if you worry about size.
• A cover with a pen loop keeps your pen with your planner.
• A clear cover protects the front page from wear.

Then there are stickers. Hobonichi stickers help you mark events and add fun to your pages. Start with a small pack. You can always add more later.

Shop Hobonichi A5 covers on ZenMarket

Where to Buy Hobonichi in US: Your Best Options

Many fans ask where to buy Hobonichi in US shops and online. You have a few options:

• US stationery shops. They stock popular covers and books, but designs sell out quickly.
• Online marketplaces. Prices can be higher, and stock changes fast.
• Japanese stores through a proxy service like ZenMarket. You get the full range, including limited covers and new releases that do not reach US shops.ZenMarket lets you buy from Japanese stores that do not ship abroad. It works in three steps:

1. Find the Hobonichi planner you want on a Japanese site such as Amazon Japan, Rakuten or Mercari.
2. Copy the product link and paste it into the ZenMarket search bar.
3. Add it to your cart and check out. ZenMarket buys it for you and ships it to your door.

Want to see how it works? Read our ZenMarket shopping tutorial.

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When Should You Buy Your Hobonichi A5?

Hobonichi usually launch their new collections in early September, and stock peaks that same month. Popular covers and layouts often sell out by December, so early buyers get the best pick, even if you won't start using the book until January. So buy in autumn if you can, even if you plan to start your Hobonichi A5 in January.

Frequently Asked Questions

Is the Hobonichi A5 the same as the Cousin? Mostly. The Cousin is the best-known A5 book. Hobonichi also sells the HON A5, the Avec and the Day-Free in the same size. The Cousin has monthly, weekly and daily sections in one book. The A6 Original has no built-in weekly spread.

Is the Hobonichi A5 too big to carry every day? It can be. It fits a tote or backpack, but not a small bag. If you need a very portable planner, the A6 is easier.

What size is the Hobonichi A5? It measures 148 mm by 210 mm. That is about twice the size of the Original book.

Is the Hobonichi A5 worth it? It is worth it if you use the weekly and daily pages. If you only jot short notes, a smaller book may be a better fit.

Can I use fountain pens on the Hobonichi A5? Yes, most fine to broad fountain pens work well on the current paper. Test wet inks and highlighters on a back page first.

The Bottom Line

The Hobonichi A5 is not too big for everyone. It is too big for some. Run the three tests: the bag test, the page test and the habit test. If you pass at least two, the A5 will likely make you happy. If you fail two, try the A6 first.

Whichever size you pick, the best Hobonichi planner is the one you actually open every day.

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