Everyone who has ever changed careers has said the same sentence out loud, usually to a friend, usually with a laptop open: “I reckon about six months.”

Nobody has ever finished in six months.

Not because the plan was wrong. The plan was fine. The plan simply did not account for a reorg, a hiring filter, a framework deprecation, and the small matter of an entire industry deciding that AI should do the job you were training for. That is why I built this Career Transition Timeline Generator. You give it your plan. It gives the plan back to you, revised.

What is the Career Transition Timeline Generator?

It is a satirical planning tool that takes your target role and your honest study hours, calculates the clean, hopeful estimate you would tell your friends, and then runs that estimate through everything that actually happens to people over a multi-year career change.

Every delay in it is real. I did not invent the one about junior roles requiring three years of experience in the thing you are transitioning into. I did not invent the keyword filter rejecting a CV for lacking a keyword that is printed on the CV. These are simply the terms and conditions.

Why is my career transition timeline always wrong?

Because you estimated the learning, and learning was never the slow part.

Here is the thing nobody tells you when you start. You can absolutely learn the technical content of a new field in a few hundred focused hours. That part is tractable, and it is the part you can control. What you cannot control is everything the tool models:

The field moves while you study. Tools get deprecated, exams get new version numbers, and the best practice you carefully memorised becomes the thing people write critical blog posts about.

AI keeps moving the target. This is the genuinely new one. The entry rung of a lot of technical ladders is being automated, which means the first job you were aiming for may not exist in the same shape by the time you are ready for it. Meanwhile every posting has quietly added an AI requirement that nobody offers a path to satisfying.

Your current employer fights back, kindly. They promote you. They make you the only person who understands the legacy system. Golden handcuffs are still handcuffs, and they are made of a completely reasonable salary.

Hiring is a closed loop. You need experience to get the role that gives you experience. Everyone knows this is broken. Nobody has fixed it.

Life happens, and it should. A new baby, a sick parent, a burnout that needed three months off. These are not failures of discipline. They are the reason the timeline exists in the first place.

How do you use the timeline generator?

Pick where you are escaping from and where you are heading. Set your study hours to what you honestly manage, not what you intend to manage on Sunday evenings. Choose your life mode, because someone with young kids and someone with none are not running the same race and pretending otherwise helps nobody.

Then generate. You will get your original estimate, your revised estimate, the scope creep between them, and a quarter-by-quarter list of what went wrong. Each delay is colour-coded by category so you can see at a glance whether the industry, your employer, the hiring process, or life did the most damage.

There is also a Recalculate button. It always produces a longer timeline. This is not a bug. Plans only ever slip.

So how long does a career transition really take?

Roughly eighteen months to three years for most people making a genuine field change while working full time. Faster if you already have adjacent technical skills, slower if you are starting from a standing start or have serious commitments outside work.

The number that matters more than the duration: almost nobody makes it in one clean run. The typical path involves at least one stall, one period of thinking it was a stupid idea, and one moment where a person on the inside answers a message and unlocks something no certificate would have. That last one is the single most reliable accelerator, and it is free, and it is available today.

Is this real career advice?

No. It is a joke tool that colour-codes your suffering.

The real advice is short and boring, which is why it does not go viral. Pick one target and stop switching. Build a small thing that works and put it where people can see it. Talk to humans in the field rather than optimising your CV for a robot. Apply before you feel ready, because everyone else already did. And when the timeline slips, which it will, note that it slipped for reasons that were not about your ability.

The part where I am briefly sincere

Every delay in this tool is a thing done to someone, not by them. The reorg, the filter, the deprecation, the automation. It is worth seeing them laid out on a timeline, because when you are in the middle of one it feels like personal failure, and it almost never is.

The people who get across are not the ones who avoided the slippage. They are the ones who were still going after it. That is the whole difference and it is much less glamorous than any certification.

Run it, screenshot the worst one, and send it to the friend who also said six months.

If you liked this, the Certification Cost Calculator works out how many years of noodles your dream certification costs, and there are more tools in the same spirit.