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How long does it take to make a friend? What the research says

By the TruFriend team · · Updated · 7 min read

A well-known study estimated how many hours it takes to go from acquaintance to close friend. Here is what it found, and what it means for busy grown-ups.

There is a particular kind of disappointment that arrives about two months into a new friendship. You have met the person four or five times. You like them. They seem to like you. And yet the conversation is still slightly careful, still mostly about work and weekend plans, and you find yourself wondering whether it is ever going to become the real thing or whether you have misread it.

That moment is where a lot of promising friendships quietly end — not because either person decided anything, but because one of them concluded it was not working and stopped putting in the effort. The useful thing about the research on friendship is that it tells you, fairly precisely, that you are being impatient.

What the research actually measured

In 2018 Jeffrey Hall, a communication researcher at the University of Kansas, published a study in the Journal of Social and Personal Relationships that tried to put a number on something everyone experiences and nobody quantifies. He surveyed 355 people who had moved to a new city within the previous six months, asking about people they had met since arriving and how the relationships had developed. He also followed 112 university students through their first weeks at a new institution, when their entire social world was being rebuilt from zero.

The question was simple: how many hours of shared time does it take before an acquaintance becomes a friend?

The numbers

According to the University of Kansas summary of the work, it took roughly 40 to 60 hours together to move from acquaintance to casual friend. Somewhere around 80 to 100 hours, people began describing each other simply as friends. And a close friendship took more than 200 hours.

Sit with those numbers for a moment against the way grown-up life is actually arranged. A monthly dinner is about three hours. At that rate, a casual friendship takes well over a year, and a close one is arithmetically out of reach — you would be into your sixth year before you got there, by which point one of you has almost certainly moved.

This is the real explanation for something that a lot of people quietly take personally. It is not that you have become worse at friendship since university. It is that university supplied enormous quantities of unstructured shared time without anyone having to arrange it, and grown-up life does not. The hours were always the mechanism; you just never had to think about them.

Not all hours count the same

The study found something else that matters more than the headline figures. The kind of time mattered. Relaxed, unstructured time — hanging around, joking, doing something together with no particular agenda — moved relationships forward. Time spent working alongside each other largely did not.

Which explains a common and slightly depressing experience: you can share an office with someone for three years, spend a thousand hours in their company, and still not be friends. Those hours were spent on the work, with each of you performing a professional version of yourself. They do not convert.

The practical implication is not subtle. If you want a colleague to become a friend, you have to do something with them that is not work — and the moment you do, the hours start counting properly.

What this means for how you arrange your life

The first implication is that frequency beats intensity. Two hours a week with the same person gets you to a hundred hours inside a year. A spectacular weekend away every few months does not, however good the weekend is. A standing arrangement — Tuesday padel, Saturday morning coffee, the first Thursday of the month — is worth more than any amount of enthusiasm, because it accumulates without either of you having to decide anything each week.

The second is that shared activities are efficient. An hour of coffee is an hour of conversation, which is hard work early on. An hour of walking, playing, cooking or wandering around a gallery is an hour of easy company with conversation as a by-product. You get the same hours at a much lower cost in effort, which is why activity-based friendships often form faster than conversational ones.

The third, and the one worth remembering at that two-month mark, is that early friendships are supposed to feel light. Four meetings is perhaps eight hours. Eight hours is nowhere near the threshold at which anything is meant to feel close. The politeness you are reading as a bad sign is simply what hour eight feels like. Nearly everyone stops somewhere in the twenties and thirties, which means a great many friendships that would have worked were abandoned as failures a third of the way in.

And the fourth: guard the time. In a city where work expands to fill everything, the standing plan is the only thing that reliably survives a busy month. Anything that has to be renegotiated every week will eventually not be.

The Dubai problem

All of this is harder here than it would be in a smaller, slower city, for reasons worth naming.

Distance eats hours before they happen. If seeing someone costs forty minutes of driving each way, an hour together costs most of an evening, and it will happen half as often as it would if they lived fifteen minutes away. Over a year that is the whole difference between a friend and someone you used to see.

Timing eats them too. Two people with compatible interests but incompatible schedules will never reach the threshold. Someone who is free on weekday evenings and someone who is only free on Saturday mornings can get on brilliantly and still accumulate almost nothing.

And the transience cuts the runway short. If the average stay is a few years, a friendship that takes two years to become close has not left much room. The answer is not to rush intimacy — you cannot — but to raise the frequency, which is the only variable you actually control.

A caveat worth keeping

These are averages from two samples, not laws of nature. Hall himself was careful about that, and anyone who has made a fast friendship knows the exceptions are real: a hard week shared with someone, a long delayed flight, a crisis, a trip where you are thrown together for days, can do in a weekend what a year of coffees would not. Intensity compresses the clock.

The numbers are still useful, though, precisely because the exceptions are rare and unplannable. You cannot arrange to be stuck in an airport with a promising acquaintance. You can arrange to see them every Tuesday. When people say a friendship "just happened", they usually mean the hours accumulated somewhere they were not paying attention — a shared office in the days when offices were full, a course, a team, a neighbourhood. Now that grown-up life supplies fewer of those places, the accumulation has to be deliberate. That is the whole difference.

Where the easy hours happen

If the hours that count are the relaxed ones, the practical question is where you get them without effort. The answer is usually a place with something to do in it. Two people sitting opposite each other over coffee have to carry the conversation the whole time. Four people on a padel court, or around a table at a book club, or walking the same loop on a Saturday morning, have the activity to lean on, and the conversation fills the gaps around it.

That is why the most dependable friendships in Dubai tend to grow out of something regular rather than something special: the same court on Tuesday evenings, the same reading group every few weeks, the same training session where the same faces turn up. None of those hours feels like it is building anything. Fifty of them later, it has.

If you want somewhere to start, our Places lists show venues in Dubai that suit a small group: padel and tennis courts, places to train with others and cafés and spaces that suit a book club.

How we designed TruFriend around this

This research is, more than anything else, the reason TruFriend works the way it does.

Most services that connect people match on interests, because interests are easy to ask about. But two people who both love coffee and are never free at the same time will never spend the hours, and no amount of compatibility fixes that. So Tru, our assistant, asks when you are usually free and how far you are willing to travel, and treats those answers as seriously as what you enjoy. Two people who live fifteen minutes apart and are both free on Tuesday evenings have a genuine chance of reaching a hundred hours. Two people on opposite sides of the city with opposite schedules do not, however well they would have got on.

It is also why circles exist rather than just one-to-one introductions. A circle is a machine for producing repeated, low-effort, relaxed hours with the same handful of people — exactly the kind the research says actually counts.

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