Free local time calculator
Best Time to Post on Substack
Use this Substack send-time calculator to choose newsletter windows that match inbox routines, reading time, and reply behavior instead of generic social feed peaks.
Find my posting timePosting schedule calculator
See the best times to post in your own timezone.
Post aroundThis is your suggested local posting time.
9:32 PM Today
Recommended test window: 9:14 PM - 10:12 PM
For your United States audience, that's Thursday, 5:14 PM - 6:12 PM.
Audience: United States
Next best times to post
Start with these recommended windows. We show your local time first, then the matching audience time.Reasons are based on your audience time.
Window: 9:14 PM - 10:12 PM
Audience time: Thursday, 5:14 PM - 6:12 PM
Good for afternoon attention
Window: 5:14 PM - 6:08 PM
Audience time: Friday, 1:14 PM - 2:08 PM
Good for lunch-break browsing
Window: 9:03 PM - 9:33 PM
Audience time: Friday, 5:03 PM - 5:33 PM
Good for afternoon attention
Weekly plan
Plan your week with one recommended posting time for each day.Days are shown in your posting timezone.
Window: 5:19 PM - 5:53 PM
Audience: Monday, 1:19 PM - 1:53 PM
Window: 5:16 PM - 5:57 PM
Audience: Tuesday, 1:16 PM - 1:57 PM
Window: 5:10 PM - 5:56 PM
Audience: Wednesday, 1:10 PM - 1:56 PM
Window: 5:18 PM - 6:15 PM
Audience: Thursday, 1:18 PM - 2:15 PM
Window: 5:14 PM - 6:08 PM
Audience: Friday, 1:14 PM - 2:08 PM
Window: 10:16 PM - 10:48 PM
Audience: Saturday, 6:16 PM - 6:48 PM
Window: 10:13 PM - 11:09 PM
Audience: Sunday, 6:13 PM - 7:09 PM
Quick Answer
The best time to post on Substack is usually when readers can open and start reading before the email is buried. Compare opens with read time, clicks, replies, and paid conversions.
Use the calculator to personalize the result by audience country, niche, content type, and goal. Treat the result as a starting point and test the same window for at least 2 weeks.
Want your own posting time?
Use the calculator to convert your audience's best window into your local posting time.
Calculate my best timeBest Time By Content Type
| Content type | Best audience window | Use it for |
|---|---|---|
| Newsletter issue | Weekday morning and lunch | Use it for: Regular essays, updates, and reader habits. |
| Long essay | Morning or early evening | Use it for: Reading sessions that need more attention. |
| Paid conversion note | Lunch and weekday afternoon | Use it for: Offers, launches, and subscriber prompts. |
Best Time By Goal
| Goal | Useful window | Why it helps |
|---|---|---|
| More views | Weekday morning and lunch | Post when the audience has enough time to notice and respond. |
| More engagement | Lunch or evening | Choose windows when replies, comments, or shares are easier. |
| More followers | Afternoon and evening | Use timing that gives profile visits room to happen after discovery. |
| More sales | Lunch and evening | Pair the post with a clear offer, proof, and next step. |
How This Calculator Works
Recommendation logic last refreshed: May 6, 2026, 04:45 UTC
Find audience peak windows
The rules start with platform benchmarks and adjust for content type, niche, and goal.
Convert to local time
No timezone math needed.
Build a weekly plan
Each day gets one short recommended window instead of one long vague range.
Posting time tips & FAQ
Use the result as a starting point, then test it with your own content for two weeks.
What is the best time to post on Substack?+
The best time depends on your audience country, niche, content type, goal, and posting timezone. The calculator gives you a personalized local window.
Does posting time matter on Substack?+
Posting time can improve early engagement, but content quality and audience fit still matter more than timing alone.
Is there one best time for every Substack account?+
No. Benchmarks are useful starting points, but your own audience data should decide the final schedule.
How should I test my best posting time?+
Start with one recommended window and test it consistently for at least two weeks. Keep the content format similar, then compare views, saves, comments, profile visits, follows, and conversions before changing your schedule.