Why cross-post from Instagram to TikTok?
If you are creating Reels on Instagram first, you are sitting on a goldmine of TikTok content. TikTok's algorithm gives new content a fair chance regardless of follower count, meaning your best Reels could reach millions of new viewers. The key is adapting to TikTok's faster pace and trend-driven culture.
Instagram Specs
- Caption limit
- 2,200 chars
- Max hashtags
- 8
- Aspect ratios
- 1:1, 4:5, 9:16
- Media formats
- JPG, PNG, MP4, MOV
- Max video length
- 3 min
- Max file size
- 100 MB
- Best times
- 11 AM - 1 PM, 5-7 PM
- Links in posts
- Yes
Instagram Specs
- Caption limit
- 2,200 chars
- Max hashtags
- 8
- Aspect ratios
- 1:1, 4:5, 9:16
- Media formats
- JPG, PNG, MP4, MOV
- Max video length
- 3 min
- Max file size
- 100 MB
- Best times
- 11 AM - 1 PM, 5-7 PM
- Links in posts
- Yes
TikTok Specs
- Caption limit
- 2,200 chars
- Max hashtags
- 10
- Aspect ratios
- 9:16, 1:1
- Media formats
- MP4, MOV
- Max video length
- 3 min
- Max file size
- 100 MB
- Best times
- 6-10 AM, 7-9 PM
- Links in posts
- No
How to cross-post from Instagram to TikTok
- 1
Download your Reel from Instagram
Save your Reel from the Instagram app. Check that it does not have an Instagram watermark or branded overlay.
- 2
Add a stronger hook for TikTok
TikTok users scroll faster than Instagram users. Consider re-editing the first 1-2 seconds to add a more attention-grabbing hook.
- 3
Add trending TikTok sounds
Instagram audio does not transfer. Add a trending TikTok sound to boost algorithmic distribution. Check the TikTok Creative Center for current trends.
- 4
Load up on TikTok hashtags
Instagram uses 5-8 hashtags. TikTok benefits from up to 10, including trending ones like niche-specific tags and discovery hashtags.
- 5
Post at TikTok peak hours
Instagram peaks at 11 AM-1 PM. TikTok peaks at 6-10 AM and 7-9 PM. Adjust your posting time.
Formatting tips for Instagram to TikTok
Both platforms use 9:16 vertical
No aspect ratio change needed. Both prefer 1080x1920 resolution.
TikTok hashtags are more aggressive
Go from Instagram's 5-8 to TikTok's 8-10 hashtags. Include trending tags and niche-specific tags.
Captions have the same limit
Both allow 2,200 characters. But TikTok captions should be shorter and hookier—front-load the value.
Common mistakes to avoid
Forgetting to add TikTok audio
Instagram audio does not carry over. Add trending TikTok sounds to take advantage of audio-driven discovery.
Same posting time for both platforms
TikTok and Instagram have different peak times. Schedule separately for each platform's optimal engagement windows.
Instagram's polished aesthetic on TikTok
TikTok favors authentic, raw content over polished productions. Consider if your Reel needs to be less "produced" for TikTok.
Pro Tip
TikTok's algorithm tests new content with a small audience before scaling it up. Post your Reel on TikTok even if you have zero followers—it could outperform your Instagram version significantly.
Frequently asked questions
Can I post Instagram Reels on TikTok?
Yes. Both support 9:16 vertical video with similar length limits. Download your Reel, add a TikTok trending sound, adjust hashtags, and upload. No format conversion needed.
Does TikTok penalize Instagram content?
TikTok does not have a formal anti-watermark policy like Instagram. However, adding native TikTok elements (trending sounds, effects) helps the algorithm promote your content.
Which performs better, Instagram Reels or TikTok?
TikTok generally has higher organic reach for new creators due to its algorithm. Instagram Reels tend to perform better for established accounts with existing followers.