Australian science broadcaster & author. A Periodic Tale: My Sciencey Memoir (2024) I do not endorse any commercial products.
On Instagram, Dr Karl Kruszelnicki is a verified None brand based in United States with an audience of 281.4K. The account has published 963 posts, currently less than one post a week. Engagement runs at 43.62%, or about 122,443 likes and 286 comments per post.
With 281.4K followers across 963 posts, Doctor_karl is one of the None accounts tracked in the InstME index.
Doctor_karl's posts draw around 122,443 likes and 286 comments each, close to one interaction for every 2 followers.
At one comment per 428 likes, the ratio points to an audience that mostly engages through likes.
Video content averages 983.8K views, 3.5× the follower count, a sign posts regularly travel beyond the existing audience.
Doctor_karl keeps a posting cadence of less than one post per week.
Doctor_karl keeps its following list short (21) relative to 281.4K followers, as established creators and brands tend to.
Estimated sponsored-post value
$3,900–$7,300
Based on 281.4K followers and a 43.62% engagement rate, a single sponsored post by Doctor_karl is worth an estimated $3,900–$7,300. This is a modeled range, not a quoted rate, actual pricing varies by niche, content format, usage rights and exclusivity.
Content Focus
Primary: None
| Metric | Doctor_karl | Cohort median |
|---|---|---|
| Engagement rate | 43.62% | 1.25% |
| Average likes | 122,443 | 2,985 |
| Average comments | 286 | 73 |
| Posts per week | 0.12 | 0.74 |
Median values from 44,975 accounts with 100K–1M followers in the InstME index, refreshed Jul 19, 2026.
| Metric | Doctor_karl | Cohort median |
|---|---|---|
| Engagement rate | 43.62% | 0.86% |
| Average likes | 122,443 | 2,003 |
| Average comments | 286 | 56 |
| Posts per week | 0.12 | 0.79 |
Median values from 6,613 accounts in United States with 100K–1M followers in the InstME index, refreshed Jul 19, 2026.
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Last reviewed: Mar 26, 2026
Dr Karl Kruszelnicki is a verified none brand based in United States on Instagram, with 281.4K followers.
Dr Karl Kruszelnicki posts on Instagram as @doctor_karl.
Dr Karl Kruszelnicki has 281,392 followers on Instagram (281.4K) as of Mar 26, 2026.
Dr Karl Kruszelnicki's engagement rate is 43.62%, calculated from average likes and comments per post relative to followers.
Posts by Dr Karl Kruszelnicki average 122,443 likes and 286 comments.
Dr Karl Kruszelnicki posts less than once a week on average.
Dr Karl Kruszelnicki is registered as a business account on Instagram and is verified.
Dr Karl Kruszelnicki is categorized as a none account in the InstME index, based on the profile's bio and Instagram category across 963 posts.
Dr Karl Kruszelnicki's profile places the account in United States. Location comes from public profile signals, so treat it as the account's stated market rather than a confirmed address.
Total Posts
963
Avg Comments
286
Engagement
0.73%
Yes. Dr Karl Kruszelnicki carries the blue verified badge on Instagram.
A sponsored post from Dr Karl Kruszelnicki is estimated at $3,900 to $7,300. This is a model based on audience size and engagement, not a rate card, so real pricing is set by the creator.
