It takes about 200 hours to make a close friend
A researcher counted how long friendships take to form. The answer explains why "we must catch up soon" never turns into anything.
Most adults have said it: "we should hang out more." Then a year goes by. One study puts a number on why that matters.
The hours add up slowly
Jeffrey Hall, a communication researcher at the University of Kansas, surveyed 355 adults who had moved to a new city in the previous six months and were looking for friends. He asked how much time they'd spent with people they'd met, and how close they now felt.
His estimates, published in 2018 in the Journal of Social and Personal Relationships:
- roughly 50 hours together to go from acquaintance to casual friend
- roughly 90 hours to become a friend
- more than 200 hours to become a close friend
What you do with those hours matters too. Hall found that time spent hanging out, joking around and doing things together counted for much more than hours spent working side by side. Sitting next to someone at work for a year doesn't automatically make them a friend.
Two hundred hours is a lot. At one evening a week, that's the best part of a year, and that's with someone you actually see every week.
Friendships fade when you stop showing up
The hours don't just build friendships, they keep them going. Robin Dunbar, the Oxford anthropologist known for "Dunbar's number", reviewed decades of research in a 2018 paper called The Anatomy of Friendship. One of his conclusions: friendships have a natural decay rate. Without contact, emotional closeness drops, and friends slide back toward being acquaintances. Dunbar suggests social media may slow that decay down, but it doesn't stop it.
And we're seeing each other less
In 2023 the US Surgeon General, Vivek Murthy, published an advisory on loneliness. Using the American Time Use Survey, it reported that Americans spent about 20 minutes a day in person with friends in 2020, down from about 60 minutes in 2003. For people aged 15 to 24, time with friends fell by about 70%.
This isn't only a US problem. In June 2025 the World Health Organization's Commission on Social Connection estimated that about 1 in 6 people worldwide are affected by loneliness, and linked loneliness to roughly 871,000 deaths a year, about 100 every hour.
What to do with this
The research doesn't say "be more sociable" in some vague way. It says friendship runs on time together, and time together runs on plans that actually happen. A few things that help:
- Make it recurring. A standing Sunday game or a monthly dinner racks up hours without anyone having to organise from scratch.
- Do something together. Hall's data suggests shared activity counts for more than proximity. A braai, a hike or a pub quiz beats sitting in the same office.
- Stop waiting for the perfect weekend. A plan with five yeses this Saturday beats the ideal plan that never gets made.
Quorum is built for exactly this: propose something, see who's in, and when enough people say yes, it's on. The hours take care of themselves.
Sources
- Hall, J. A. (2019). How many hours does it take to make a friend? Journal of Social and Personal Relationships, 36(4), 1278–1296. See also the University of Kansas summary.
- Dunbar, R. I. M. (2018). The anatomy of friendship. Trends in Cognitive Sciences, 22(1), 32–51.
- Office of the US Surgeon General (2023). Our Epidemic of Loneliness and Isolation.
- World Health Organization (30 June 2025). Social connection linked to improved health and reduced risk of early death.