How often to post on each network
There is no single right number. Instagram, LinkedIn and TikTok have large measured studies behind them: Buffer looked at millions of posts and found that 3-5 posts a week on Instagram and 2-5 on LinkedIn and TikTok work well. For Facebook, X, Threads, YouTube and Google Business Profile, the best available numbers are recommendations from social media software companies, and for Pinterest it is Pinterest's own advice to post weekly. The planner shows which kind of evidence each range rests on, with the source and its date.
How the split works
Most teams cannot hit every range at once, so the planner starts from what you can actually make. It splits your weekly posts across your networks in proportion to the middle of each range, rounds to whole posts that add up to your total, and makes sure every network gets at least one. If your total is below the sum of the minimums, it says so: posting less often than the sources suggest is fine, but it is better to know.
From plan to schedule
The weekly grid spreads each network's posts evenly over the week, starting on Monday. Use it to set up a posting schedule: in PostBoost you set your posting times once, add posts to the queue and see every network in one calendar. Check your own analytics after a few weeks and move posts to the networks where they do best.