How many followers does Kari Byron have on X?

Kari Byron (@KariByron) currently has 424,894 followers on X (Twitter), losing 717 followers in the last 7 days. The count is refreshed continuously from public data.

When did Kari Byron join X (Twitter)?

Kari Byron joined X in May 2010, making the account about 16 years old.

How many posts has Kari Byron published?

Kari Byron has published 10,332 posts on X, averaging about 1.7 posts per day over the account's lifetime.

Is Kari Byron verified on X?

Yes. Kari Byron is verified on X with a blue checkmark (X Premium).

Kari Byron

@KariByron

EnglishTier A

View on X

Joined May 2010 (16 years on X)x.com

Followers

425K

Growth (7d)

-717

Following

1.2K

Influence

Posts

10K~1.7/day

Likes given

23K

Media posts

2.3K

Follower ratio

365:1

Insights

In the last 7 days @KariByron lost 717 followers.

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Follower growth

2026-06-23-10 over 2 days2026-06-24

Bio

MYTHBUSTERS, Crash Test World, EXPLR, Director National STEM Festival.

Notable followers

The biggest accounts in our directory following @KariByron.

Nathan Fillion2.7M Everyday Astronaut2.1M Jon Favreau2.0M SPACE.com1.6M Adam Savage1.2M

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Kari Byron on X - frequently asked questions

How many followers does Kari Byron have on X?: Kari Byron (@KariByron) currently has 424,894 followers on X (Twitter), losing 717 followers in the last 7 days. The count is refreshed continuously from public data.
When did Kari Byron join X (Twitter)?: Kari Byron joined X in May 2010, making the account about 16 years old.
How many posts has Kari Byron published?: Kari Byron has published 10,332 posts on X, averaging about 1.7 posts per day over the account's lifetime.
Is Kari Byron verified on X?: Yes. Kari Byron is verified on X with a blue checkmark (X Premium).