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Character Limits on Social Media (2026)

Updated 2026-10-20

Writing for several platforms? Here is every limit in one place, with a counter for each.

All limits at a glance

X (Twitter) · post280
Instagram · caption2,200
Instagram · bio150
YouTube · title100
YouTube · description5,000
Threads · post500
Bluesky · post300
LinkedIn · post3,000
SMS · message160
Google Ads · headline30
Google Ads · description90
Google · title tag60
Google · meta description160

Two rules that surprise people

On X, Japanese, Chinese and Korean characters and emoji count double, and every link counts 23.

An SMS drops from 160 to 70 characters as soon as it contains one emoji or one letter outside the basic alphabet.

More counters