How Many Saturday Evenings Does It Take to Make a Friend?
Jeffrey Hall's study puts it near 50 hours for a casual friend, 90 for a friend, 200+ for a close one. Here is that math on a calendar, plus which hours count.
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A three-hour dinner with one friend on the last Saturday of every month adds up to 36 hours a year. At that pace you reach the 50-hour mark in about 17 months, and the 200-hour mark in a bit over five and a half years. Those are the stakes of a single sentence of research, so it is worth doing the arithmetic properly.
The research is Jeffrey Hall’s, a communication studies professor at the University of Kansas, in the Journal of Social and Personal Relationships (2018). According to the university’s release on the study, it takes roughly 50 hours together to move from acquaintance to casual friend, about 90 hours to reach “friend,” and more than 200 hours for a close friend. In short: dozens of hours for the first rung, around a hundred for the second, and hundreds for the third.
What did Hall actually measure?
Two samples. In the first, 355 adults who had moved within the past six months and wanted new friends picked someone they had met since the move and placed the relationship on a four-step scale: acquaintance, casual friend, friend, close friend. In the second, 112 University of Kansas freshmen described two people they had met in their first two weeks, then reported again at four and seven weeks.
Everything here rests on self-report, and I am reading 50, 90 and 200 as running totals, which is how most coverage reads them. Some write-ups treat the 90 as an extra stage. That ambiguity matters for the table below, so check it against your own sense of the relationship rather than treating a threshold as a switch.
How long do the hours take on a calendar?
Weeks needed, rounded up, if the hours were all spent with one person at a steady weekly rate:
| Hours per week | To 50 hours | To 90 hours | To 200 hours |
|---|---|---|---|
| 1 (a weekday walk) | 50 weeks | 90 weeks | 200 weeks |
| 2 | 25 weeks | 45 weeks | 100 weeks |
| 3 (one Saturday evening) | 17 weeks | 30 weeks | 67 weeks |
| 4 (Saturday plus a walk) | 13 weeks | 23 weeks | 50 weeks |
| 6 | 9 weeks | 15 weeks | 34 weeks |
| 10 | 5 weeks | 9 weeks | 20 weeks |
One Saturday evening a week, then, buys a casual friend in about four months and a friend in about seven. A close friend takes about fifteen months of unbroken Saturdays. Drop to one dinner a month and every number in the table multiplies by roughly four.
Hall noticed that people do not move up at a steady rate. When a relationship changes stage, the time together tends to double or triple, and he cited freshmen who spent a third of their waking hours in one month with a single good friend. At sixteen waking hours a day, that works out to around 160 hours in thirty days, which is why students can cover in a semester what adults need years for.
Which hours counted?
Hall’s coverage says time spent hanging out and joking around counted, as did games and similar leisure, while hours spent working together counted for less. A Greater Good summary of the paper adds detail on the student sample. Catching up on each other’s lives, playful talk, serious conversation and showing affection tracked with closeness. Small talk about current events, pets, sports or music was linked to growing distance. Workplace and classroom time did not build closeness, and neither did generic activities like shopping or partying in that summary. I could not read the full paper, so treat that breakdown as secondhand.
Run your own week through that filter. A three-hour dinner with real catching up and some silliness is full value. Three hours at a conference side by side may count for far less. If you discount work-like hours by half, the same friendship takes twice as many weeks, which is a fair argument for protecting the unstructured kind.
What does this change about how you spend the hours?
First, it argues for recurrence over spectacle. A weekend trip delivers a lot of hours at once, but an ordinary plan repeated for months does the same arithmetic with less coordination. Standing plans that run on rails exist for exactly this reason, and the 24-plan menu ranked by planning cost is a place to pick from when Saturday is free but ideas are not.
Second, it makes small contact a down payment. The tiny daily exchanges in the mere-exposure rituals piece do not add many hours themselves, but they keep the next three-hour slot from feeling like a cold start.
Third, it explains why adult friendships stall. Nobody quits at hour 30. The plan just never gets a date. If you are the one turning down invitations, the year-of-yes rule for friend invitations puts a number on how many you accept.
Friends who watch your mornings add to the same tally. The people receiving your wake-up proof in DontSnooze are seeing you for a minute a day, and it lands in the same relationship as the Saturday dinner.
How to apply it this week
- Pick one person and one tier. Casual friend is 50 hours.
- List the weekly slots you would truly keep and add them up.
- Divide, using the table, and put the finish date in your calendar.
- Fill the slots with catching up and play, and keep work out of them.
Hall’s closing line in the release was “You can’t make people spend time with you, but you can invite them.” The table just tells you how many invitations to plan for.
Frequently asked questions
Why do articles quote different numbers, like 40 to 60 and 80 to 100 hours?
The University of Kansas release gives round figures from the adult survey (50, 90, 200+), and a combined estimate across both samples of 40 to 60 hours, 80 to 100 hours and more than 200. Secondary write-ups also split the samples: a Greater Good summary lists about 43 hours for students and 94 for adults for the first step. Use the range, not any single digit.
Did Hall follow anyone for 200 hours?
No. The student sample was followed at four and seven weeks after an initial report at about two weeks, so the 200-plus figure comes from estimating across people at different stages. It is a scale built from self-reports, which is why a couple of dozen hours either way should not worry you.
Is there a point where more hours stop helping?
The paper does not give a ceiling, but Hall’s own summary line is that time on its own does not breed intimacy. If you are past 90 hours with someone and the conversation is still about the weather, change what you do together, not how long you do it.
How do I count hours without turning a friendship into a spreadsheet?
Log only the start and end time of each meetup in a phone note, never the content, and total it on the first of the month. Counting rounds to the nearest half hour, and the whole habit takes under a minute per meetup.