Substack Writers at Work with Sarah Fay

Substack Writers at Work with Sarah Fay

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Substack Writers at Work with Sarah Fay
Substack Writers at Work with Sarah Fay
How Long Your Substack Posts Should Be in 2025

How Long Your Substack Posts Should Be in 2025

Write less, please

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Sarah Fay
Jun 10, 2025
∙ Paid
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Substack Writers at Work with Sarah Fay
Substack Writers at Work with Sarah Fay
How Long Your Substack Posts Should Be in 2025
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  • Why you need to decide for yourself how long your posts should be, not just Google or look to AI for the answer.

  • Hard data on readers’ habits in 2025 to help you make the decision.

  • My blessing not to write more because you think more = offering value.


Note: When this post first appeared, it created some controversy. It even sparked an excellent counter-post—“Against Branding (and Sarah Fay)”—from the excellent

Sam Kahn
. (I joked that his post would have been better if it had been shorter.)1


As always, AI doesn’t have the answer to how long your posts should be. When I work with my private clients, we always take into consideration:

  1. Reading trends in 2025

  2. Their category

  3. The time they have to devote to creating quality posts, no matter the length

(This last one may be the most important.)

We never google for the answer or turn to ChatGPT and neither should you.


How to decide for yourself how long your Substack posts should be

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