There is a number people want here, so let me give it first and then explain it: most answers should land between one and two minutes. Competency and behavioural answers, the "tell me about a time" questions, sit at the top of that range, around ninety seconds to two minutes. Quick factual questions ("why this company", "what are your strengths") sit at the lower end, forty-five seconds to just over a minute.
But the number is less useful than the reason behind it, because the real problem is almost never that people are a few seconds over. It is that they do not know when they have finished making their point, so they keep talking past it.
Why rambling costs you more than you think
Going long is not a neutral mistake. It actively damages you, in ways that compound:
- You bury your best point. If the strong part of your answer arrives at the forty-second mark and you carry on for another ninety seconds, the interviewer's memory of the answer is the weak, waffly tail, not the good bit in the middle.
- You signal you cannot prioritise. An interviewer watching you include every detail concludes you cannot tell the important from the unimportant, which is itself a competency they are assessing.
- You lose the room. After about two minutes on a single answer, attention drops. The interviewer starts thinking about their next question instead of listening, and anything you say in the overrun is essentially unheard.
- You eat your own airtime. Interviews are a fixed length. Every extra thirty seconds you spend padding one answer is thirty seconds you do not get to make a different point later. Rambling is a tax you pay on yourself.
Under-answering is a real problem too, a one-line answer to a competency question leaves the interviewer with nothing to score, but in practice it is far rarer. Almost everyone errs long, especially when nervous, because silence feels dangerous and talking feels safe. It is not.
Target lengths by question type
- Competency and behavioural ("tell me about a time..."): 90 seconds to 2 minutes. These need a full STAR structure, so they are legitimately the longest answers you give. But even here, if you are past two minutes you are almost certainly over-explaining the situation.
- Motivational ("why this job", "why this company"): 60 to 90 seconds. Long enough to show genuine reasons, short enough to stay sharp.
- Strengths, quick self-assessment: 45 seconds to just over a minute. One point, briefly evidenced, done.
- Opening "tell me about yourself": around 90 seconds to 2 minutes, because it sets the tone, but tightly structured, not a life story.
- "Do you have any questions for us": as long as the conversation naturally runs, this one is a dialogue, not a monologue.
These are targets, not stopwatches. Nobody is timing you to the second. The point is to have a sense of the right ballpark so you can feel when you are drifting well outside it.
Where the length actually goes wrong
The overrun almost always happens in one specific place: the setup. On a "tell me about a time" answer, people spend forty-five seconds explaining the background, the company, the team, the history, before they get anywhere near what they did. By the time they reach the action, the interviewer has lost the thread.
The fix is a discipline: the situation should be the shortest part of your answer, not the longest. Two sentences of context, then move. "I was working in a small finance team, and we found an error in a payment run" is enough setup for the interviewer to follow everything that comes next. They do not need the org chart.
The other place length leaks is the ending. People do not know how to stop, so they trail off, restate their point, add a caveat, circle back. A clean answer ends on its result or its lesson and then stops. Silence after a good ending is powerful. It signals confidence and hands the conversation back cleanly.
How to know when to stop
The simplest test: have you answered the question that was asked. Not "have I said everything I know about this topic", but "have I answered this specific question". The moment you have, stop. Anything after that is for you, not the interviewer.
A useful mental checkpoint on a competency answer is the result. Once you have said what happened and what you took from it, you are done. If you find yourself adding "and another thing that was good was...", you have gone past the finish line.
Practise for length, because you cannot feel it live
Here is the awkward truth: you have almost no ability to judge your own answer length in the moment. Under interview adrenaline, ninety seconds feels like thirty, and a two-and-a-half-minute ramble feels like a normal answer. People are genuinely shocked when they hear how long they actually talked.
That is why length is one of the few interview skills you cannot fix by reading about it. You have to hear yourself. Record an answer, or practise with something that times and plays it back, and the first time you listen you will almost certainly find you ran long and buried your best point. Once you have heard it, you can feel it, and that feeling is what actually controls length on the day.