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How to choose an undated 18-month A5 weekly planner

An undated 18-month A5 weekly planner lets you start whenever you like, without wasting pages because the pre-printed calendar doesn’t fit your schedule. This flexibility makes it a good choice for students, professionals, freelancers and anyone looking to organise a personal project.

But choosing the right model takes a little thought. A smart-looking cover can hide paper that’s too thin, an impractical layout or a notebook that’s awkward to carry around. Here are the key things to check before buying an undated A5 planner, plus a selection to suit different needs.

Common pitfalls to avoid before buying

1. Confusing the page count with how long it will really last

The words “18 months” don’t tell you how much usable space there is. Take a closer look at the layout: are there monthly views, enough weekly pages, note pages and dedicated areas for tracking goals?

A planner can boast an impressive page count while offering very little room for everyday writing. If you plan to use it regularly, check that the weekly double-page spreads have dedicated space for tasks and notes.

2. Choosing a cover based on looks alone

A hardback cover protects your planner from everyday handling, but it also makes it heavier. A soft cover, on the other hand, slips into a bag more easily, though it offers a different level of resistance to scuffs and knocks.

The right choice depends on your routine: frequent travel, a permanent desk, classes, meetings or planning at home. Features such as an elastic closure and ribbon bookmark can make a difference, provided the binding is sturdy enough.

3. Overlooking the paper and readability

Paper weight directly affects how comfortable it is to write and how much ink shows through. At 100 g/m², offset paper generally feels more substantial than very lightweight paper, while still working well with everyday pens. If you use felt-tip pens or particularly wet inks, it’s worth checking the manufacturer’s recommendations.

Off-white paper may also be more comfortable for everyday use than a very bright white, which can sometimes contribute to eye strain. It’s ultimately a matter of personal preference and comfort, rather than a guarantee that applies to everyone.

What to look for in an undated A5 planner

A practical everyday size

A5 measures around 14.8 × 21 cm. It offers a good balance between writing space and portability. It fits into a work bag or school bag, while leaving enough room to note down appointments, tasks and ideas.

Remember to check the stated thickness and weight, too. A planner packed with features can quickly become bulky if you carry it every day.

A well-planned monthly and weekly layout

A good planner should make it easy to move from the bigger picture to the details of your week. Look for:

  • a customisable introductory page;
  • undated monthly double-page spreads;
  • weekly pages with dedicated space for notes;
  • areas for priorities, projects or goals;
  • a layout with enough space to write clearly.

This combination makes monthly and weekly planning easier, without forcing you to follow a set method. You can fill in the dates yourself, start part-way through a month or leave out a particularly busy period.

Useful protective features

A hardback cover is particularly useful if you often check your planner when you’re out and about. An elastic closure keeps the pages securely shut and stops the planner opening in your bag. A bookmark helps you find the current week quickly.

These features can’t make up for a weak binding, though. Take the time to read the product description and look at the photos to check that the stated construction meets your needs.

Which option suits you?

Recommended for : Budget-conscious beginners
Jubiluu A5 Undated Hardcover 18-Month Blush Pink

Jubiluu A5 undated hardback, 18 months – blush pink

Why it’s a good fit: Its A5 size and undated layout mean you can start whenever you like, then gradually organise your studies, work or personal projects.

How this planner helps you avoid the pitfall

The monthly and weekly views are undated, so you’re not tied to a set calendar and won’t risk wasting pages. The product description also specifies 100 g offset paper.

Key features and benefits

Hardback cover, 224 pages as stated, elastic closure and ribbon bookmark.

Recommended for : Those who love premium stationery
MOLESKINE 12-Month Weekly Planner XL Hardcover

MOLESKINE XL, 12-month hardback weekly planner

Why it’s a good fit: It’s designed for people looking for a refined finish and extra sections to help manage projects, ideas and travel.

How this planner helps you avoid the pitfall

The product details specify a weekly layout with space for notes, pages for goals and a binding designed to let the planner lie flat.

Key features and benefits

Hardback cover, 70 g/m² ivory paper from FSC-certified sources, elastic closure, bookmark and inner pocket.

Recommended for : Specific needs and frequent use
Jubiluu A5 Undated Hardcover 18-Month Classic Black

Jubiluu A5 undated hardback, 18 months – classic black

Why it’s a good fit: Its understated look works well in a professional setting. The undated layout also makes it easy to track a long-term project without being tied to a set calendar.

How this planner helps you avoid the pitfall

Monthly and weekly sections, along with note pages, let you adapt your planning to each situation, while the hardback cover protects the contents during frequent use.

Key features and benefits

A5 size, 112 sheets as stated, 100 g off-white offset paper, bookmark and elastic closure.

Looking for more options ?

We’ve brought together a comprehensive, regularly updated selection of products that meet these criteria, while taking European safety requirements into account.

How to organise an undated planner effectively

Start by filling in the dates for the months and weeks you actually plan to use. Next, set aside a page or section for your current priorities, then distribute your tasks across the weekly views. To track your goals, use a separate section to keep targets apart from everyday appointments and tasks.

A colour code using just two or three shades is usually enough to make your planner easier to read without cluttering the pages. Finally, keep your planner somewhere dry and avoid leaving it exposed to damp for long periods, as moisture can warp the paper and weaken some of its features.

Frequently asked questions

Is an undated 18-month A5 weekly planner suitable for studying?

Yes, as long as the weekly pages offer enough room for classes, homework and deadlines. Monthly views are particularly useful for keeping track of exams, coursework deadlines and revision periods.

How long can an 18-month organiser last?

It depends on how often you write in it, how you handle it and where you store it. A hardback cover, elastic closure and well-maintained binding can help protect your planner, but there’s no guarantee it will last the same amount of time for every user.

What’s the difference between an undated planner and a standard one?

An undated planner doesn’t have a pre-printed calendar. You can choose your own start date and leave some periods blank. This flexibility is useful when changing jobs, starting a course at a different time of year, working on a temporary project or when your routine varies from week to week.