Methodology in brief. First-party LinkHub data: 261,137 real LinkedIn comments and their impressions, segmented by the delay between the post being published and the comment being posted. Complemented by public industry studies, cited and dated. Third-party figures (comment vs like weight) remain estimates — flagged as such.
Key takeaways
- The best time to comment is within the first 30 minutes after the post is published: 391 impressions on average (95 median), versus 104 (22 median) after 24h. (LinkHub, n = 261,137)
- Commenting early earns ~3.8x more impressions on average and ~4.3x at the median than commenting the next day.
- Early comments also get more replies (0.8 vs 0.4) → more conversational lift.
- Comments weigh more than likes in the algorithm — estimates from ~2x (AuthoredUp) to ~5–15x depending on the source. (third-party, disputed)
- Best days: Tuesday to Thursday; windows 8–11am and noon–2pm. (Buffer, Hootsuite 2025)
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1. The best time to comment (LinkHub data)
Across 261,137 real comments, we measured the impressions generated by the delay between the post being published and the moment of the comment. The pattern is clear: the earlier you comment, the more you are seen.
| Delay after publish | Avg. impressions | Median impressions | Avg. replies | Sample |
|---|---|---|---|---|
| 0–30 min | 391 | 95 | 0.8 | 32,556 |
| 30–60 min | 292 | 70 | 0.8 | 25,538 |
| 1–2 h | 261 | 62 | 0.7 | 36,577 |
| 2–4 h | 239 | 55 | 0.7 | 42,479 |
| 4–8 h | 182 | 46 | 0.6 | 38,136 |
| 8–12 h | 147 | 35 | 0.6 | 18,282 |
| 12–24 h | 141 | 32 | 0.5 | 32,773 |
| 24 h+ | 104 | 22 | 0.4 | 34,796 |
Reading. A comment posted within the first half hour generates on average 391 impressions — that is 3.8x more than a comment posted after 24h (104). At the median, the gap is even wider: 95 vs 22 (x4.3). The decline is steady and monotonic: every hour of waiting costs visibility.
This is consistent with what studies on posts show: the first 30–60 minutes set the reach trajectory (van der Blom, 1.8M posts). On the comments side, our data confirms it at scale: the golden window is 0–30 min. To track your own impressions per comment and your best slot, browse our other LinkedIn data studies.
2. Why comment early (and why it often beats posting)
- You show up while the audience is there. A post gets most of its reach in its first hour; commenting then exposes you to the host post's audience peak.
- Conversational effect. Early comments get more replies (0.8 vs 0.4 in our data); when a thread forms, LinkedIn distributes beyond the author's audience.
- Comments > likes. The comment is the strongest engagement signal. The size of the multiplier is debated — from ~2x (AuthoredUp) to ~5–15x depending on estimates — but the direction is consistent: a relevant comment weighs clearly more than a like (see the weight of a comment vs a like in the algorithm). (third-party, disputed)
3. What are the best hours to comment on LinkedIn?
To comment early, you still need to be there when the right posts go out. Activity windows (measured on posts) serve as a guide:
- Days: Tuesday, Wednesday, Thursday. (Hootsuite 2025)
- Hours: 8–9am, 10–11am, noon–2pm, a rebound 3–5pm; a sharp drop after 5pm. (Buffer — 4.8M posts)
The ideal: watch your targets' posts and comment within the half hour. That is exactly the role of personalized feeds — gather your prospects and key creators to see their posts as soon as they go live, without scrolling the native feed.
4. Comment quality matters too
- Length: aim for 15–40 words. A comment of 10+ words boosts visibility more than a like (see comment length & impressions).
- Relevance > volume: a comment that adds an angle gets replies → conversational effect (section 2).
- Consistency + timing: this is exactly what LinkHub automates — spot the right posts as soon as they go out, in the right slot, and write the right comment with personalized AI comments (always approved by you).
FAQ
What is the best time to comment on LinkedIn? Within the first 30 minutes after the post is published: our data (261,137 comments) shows 391 average impressions in that window, versus 104 after 24h.
Does commenting early really change anything? Yes: ~3.8x more impressions on average (x4.3 at the median) between 0–30 min and 24h+.
Do comments count more than likes? Yes, clearly — from ~2x to ~5–15x depending on the source. It is the strongest engagement signal.
How do I find the right posts to comment on at the right time? Through feeds targeted on your prospects and creators in your niche — our method for finding the right posts to comment on walks through it. See also our AI profile recommendation.
Sources & methodology
- LinkHub dataset —
analyze_comment_timingfunction, 261,137 comments segmented by delay (per-bucket sample shown in the §1 table). - van der Blom — Algorithm InSights Report 2025 · AuthoredUp · Buffer · Hootsuite
About the author
Founder of LinkHub
Yannis writes about social selling, LinkedIn comments and visibility. He builds LinkHub, the extension that helps you attract qualified clients through your comments.
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