The worst version of this question is "how often should I post on social media?" with the implicit expectation of a single number that works everywhere. The best version is "how often should I post on this specific platform, given what I can realistically sustain and what my audience expects there?" Same question, completely different answers.
Posting frequency matters. Too little and the algorithm forgets you exist. Too much and you burn your audience out, burn yourself out, or both. But before the numbers — which come a few sections down — the three variables that actually determine your answer matter more than the number itself. Start there.
The three variables that actually determine your cadence
Before you pick a frequency for any platform, calibrate against these three. If you ignore them and follow generic averages, you'll land somewhere between unsustainable and ineffective.
What you can actually sustain for six months
The single biggest determinant. Three posts per week for a year beats seven posts per week for six weeks followed by two months of silence. Before you commit to a frequency, ask: can I do this every week in month three when the novelty is gone? If the honest answer is no, go lower. Consistency compounds; burnout resets the clock.
How much each platform rewards frequency vs. depth
TikTok and Threads reward volume — the algorithm wants new content constantly. LinkedIn and YouTube reward quality per post — one excellent post per week will beat three mediocre ones. Instagram and Facebook sit in between. Matching your cadence to what the platform rewards means less effort for more result. Fighting the platform's preferences means more effort for less.
What your audience will tolerate
Every audience has a mute threshold. Post above it and they unfollow — permanently. This is especially true on LinkedIn (professional audience, low tolerance) and Facebook (neighborhood groups will remove you for over-posting). Lower on TikTok and X, where the feed is so full that over-posting mostly just gets buried. When you don't know the threshold, start lower than you think and raise only if engagement holds.
The right cadence is the highest frequency you can sustain for six months without dropping quality. Everything else is either laziness or burnout — both of which the algorithm punishes equally.
The baseline before we get into platforms
If you want a single heuristic to carry around, here it is: 3–5 posts per week across your main 2–3 platforms is the sustainable ceiling for most small businesses and solo creators. That's it. Posting more across more platforms is where burnout happens; posting less is where invisibility happens.
From that baseline, platforms diverge. Some want higher cadence; some want lower. Here's the platform-by-platform breakdown.