What a copywriting formula actually is
A copywriting formula is a fixed sequence of moves for the reader's attention, built by copywriters who noticed the same pattern working across many different products and audiences. AIDA (attention, interest, desire, action) opens with a hook, builds a reason to keep reading, makes the reader want the outcome, then tells them what to do. PAS (problem, agitate, solution) names the reader's problem, presses on why it costs them something, then offers the fix. BAB (before, after, bridge) shows life without the product, life with it, and the step that gets them from one to the other. None of these is a script to fill in word for word. Each is a shape for the argument, and the words still have to come from you.
The full case for each formula, with worked examples, sits in Copywriting Formulas: AIDA, PAS, BAB and Beyond. This guide is about the narrower question: which one fits what you're writing today.
Why the right formula depends on what you're writing
A cold email to someone who has never heard of you and a product page for someone already comparing your item to two others are not the same job. The email has to earn the next sentence before it can do anything else, which is why PAS or a strong AIDA opening tends to suit it. The product page reader has already decided the category matters to them, so it can spend less time on attention and more on the detail that closes the decision. Matching the formula to where the reader already stands saves you writing paragraphs they don't need and skipping the one they do.
The same logic applies across formats:
- A landing page for paid traffic usually needs the reader's problem named fast, because they arrived with intent and no patience for a slow build.
- A nurture email to an existing list can afford the before-and-after shape of BAB, because trust is already partly built.
- A short ad has room for one move, so the formula there is really a choice of which single move earns its place.
What the formula finder asks, and what it gives back
You tell it what you're writing, who it's for, and what you want the reader to do next. It comes back with a suggested formula and a short reason for the match, so you can see the logic. It can suggest a formula that doesn't fit your situation, particularly where a brief sits between two formats or where the audience information you gave it was thin, so treat the result as a starting point for your own judgement.
Reading the suggestion against your own brief
Before you start writing to the suggested structure, check it against two things: how much the reader already knows about you, and how much friction stands between them and the action you want. A formula built for a cold, unfamiliar reader will overexplain to someone who already trusts you, and a formula built for a warm reader will underexplain to someone who has never heard your name. If the suggestion and your own read of the reader disagree, go with your read of the reader.
Turning a formula into a working draft
A formula tells you what each part of the copy is for. It doesn't tell you what to say in it, and that's where most of the actual writing effort still sits. The Copywriter's Glossary covers the individual terms a formula uses, such as the difference between a benefit and a feature, in case any of them are new to you. Once a draft exists, running it past a pre-publish checklist for the format you're writing catches the parts a formula can't check for you, such as whether a claim is one you can actually stand behind.