How to Post TikTok Videos to Instagram Reels – Complete Guide

TikTok and Instagram are two of the most popular social media platforms right now, with over 1 billion monthly active users combined. Both platforms have short-form video features – TikTok videos and Instagram Reels – that allow users to express their creativity, entertain others, and reach wider audiences.

If you have an engaging TikTok video, you may want to reuse this content to enhance your Instagram presence. Cross-posting TikTok videos to Instagram as Reels can help expose your videos to new sets of eyes. This allows you to get more mileage from your video creation efforts while expanding your overall reach.

In this comprehensive guide, we’ll cover everything you need to know about how to post TikTok videos to Instagram reels. You’ll learn about:

  • The prerequisites for cross-posting videos from TikTok to Instagram
  • Multiple methods to download and save TikTok videos
  • How to directly cross-post TikToks into Instagram
  • Third-party apps that enable easy TikTok video downloads and embeds
  • Optimization best practices for sharing TikTok videos as Instagram Reels

Prerequisites Before You Start

Before diving into the step-by-step instructions on posting TikToks to Instagram, you need to ensure you meet the core requirements. Setting up the necessary accounts and tools ahead of time will streamline the entire process.

Have an Active TikTok Account & Original Videos

First things first – you need an existing TikTok account with some of your own video content published on the platform already. Review your TikTok videos and select the clips you wish to reuse as Instagram Reels.

Ideally select videos that have performed well in terms of TikTok views, likes, comments and shares. This indicates they will likely resonate well when repurposed in Instagram.

Have an Instagram Account

You will need a corresponding Instagram account to publish your Reels to. Make sure you are logged into the account ahead of time in the Instagram mobile app.

Get familiar with Instagram Reels if the short-form video feature is new to you. Watch some Reels to understand the types of content and creativity users post. This will help you align your TikTok videos accordingly when cross-posting.

Download & Setup Necessary Apps

Posting TikTok videos directly within Instagram requires having both platform’s mobile apps installed and set up on your smartphone device. Here are the free apps to get:

  • TikTok app (iOS or Android)
  • Instagram app (iOS or Android)

We also recommend installing a video converter or downloader app (covered later) to save TikTok videos to your camera roll or device storage.

TikTok Video Requirements

Before sharing a TikTok video to Instagram Reels, check that it meets the proper specifications. This ensures the video transfers and displays correctly in the new platform.

Aspect Ratios

TikTok videos have a more vertical, portrait shape with an aspect ratio of 9:16. Instagram Reels on the other hand have a landscape orientation and expanded 16:9 widescreen ratio.

When you post a TikTok video natively to Instagram, the platform will automatically convert and fit it appropriately. But you may notice minor cropping or framing adjustments.

Video Orientation

TikTok videos must be recorded vertically in portrait mode. Likewise Reels are expected to have vertical orientations too. So you videos won’t need rotating or adjustments on that end.

Length Requirements

TikTok has a 60 second maximum limit for uploads currently. Instagram Reels doubled their video lengths recently to 90 seconds maximum.

So feel free to post up to 60 second TikTok videos to Reels. For longer TikTok videos over that, you may need to trim them down first before cross-posting.

File Formats

TikToks should be exported and saved as MP4 files for best compatibility. Instagram Reels supports that format along with MOV and MPEG4 video files.

Instagram Reels Specifications

Instagram Reels have their own set of dimensions, sizes and formats you should adhere to for an optimal viewing experience.


As mentioned the aspect ratio for Reels is a widescreen 16:9 shape. The maximum dimensions Instagram specifies are:

  • Width: 1080 pixels
  • Height: 1920 pixels

So if you’re editing your TikTok video or converting formats, resize to a maximum 1080 x 1920 pixels.


Reels videos can be between 3 seconds to 90 seconds long currently. TikToks clock in under 60 seconds, so any uploaded TikTok should meet the time length limits.

File Size

Instagram allows a maximum file size of 4GB for uploaded Reels. Even at high resolutions, TikToks should fall well below that size constraint when cross-posting.


Reels work best with the below file formats:

  • MP4
  • MOV
  • MPEG4

This aligns cleanly with TikTok’s MP4 export formats. But you may need conversion tools if downloading TikToks as other file types.

Reposting Methods: Native Options on TikTok

TikTok provides a couple straightforward options to save your videos right within the app. You can then upload these files directly to Instagram without needing third-party tools.

Save/Download TikTok Videos Natively

Here are the two approaches to download the TikTok videos you want to reuse as Reels:

Save Video from TikTok App

The TikTok app for iOS and Android lets you save your own videos (as well as others’ public videos) to your camera roll or device storage.

  • Tap the Share arrow while watching your TikTok
  • Choose Save video
  • Access the saved video from your device storage or Photos app

Use TikTok Website Downloads

You can also save TikTok videos through the website:

  • Navigate to view the video on TikTok’s website
  • Click the Share button
  • Select Save video to download

The advantage is this gives you an MP4 file ready for Instagram.

Cross-Post Directly to Instagram

TikTok provides a very handy reposting feature to seamlessly publish your video simultaneously to Instagram Reels (and your main Instagram feed).

  • After creating a new TikTok, tap Next instead of Post
  • Select Instagram icon
  • Post directly to connected Instagram account

Reposting with Third-Party Apps

While TikTok’s native tools make it easy to download and share videos to Instagram, you may want more advanced features. Third-party apps open up additional options for saving, editing and reposting TikTok videos.

Download Videos via Alternate Tools

A few top apps that provide enhanced TikTok downloading, beyond what the TikTok app itself offers, include:


  • Easily browse, discover and download TikTok videos
  • Multiple format and quality options
  • Simple trimming to download segments
  • Convenient sharing integrations


  • Downloads any public or private TikTok videos
  • Fast downloading even lengthy videos
  • Offers MP3 audio export feature
  • Includes built-in music library options

These apps can give you more flexibility than native TikTok tools in accessing videos to reuse later as Reels.

Upload & Embed Downloaded Videos

Once you’ve downloaded TikTok videos via other apps, you have a couple options to integrate them into Instagram.

Native Upload

Add downloaded TikTok files into your camera roll/gallery then upload to Reels as usual. This gives you full editing capabilities within Instagram.

Embed with Link

Various third-party tools also let you get embed codes or links for insertion into Reels. This allows displaying videos externally. But customizing is limited compared to natively uploaded video Reels.

Additional Optimization Tips

Beyond just getting your TikTok video content posted to Instagram Reels, you want engagement and views. Apply these best practices for maximizing the reach of your cross-posted Reels.

Video Editing

Use Instagram’s built-in Reels remix features or third-party editing tools to adapt your TikTok for the new platform:

  • Trim start/end points to highlight best segments
  • Add text captions, overlays and emoji stickers
  • Stitch together multiple TikToks into a single Reel
  • Use trending songs, audio or Reels templates

Reels & Instagram Features

Tap into core Instagram and Reels functionalities to enhance discoverability:

  • Include relevant #hashtags so your videos surface in searches
  • Add Location tag for area-specific connections
  • Mention or tag relevant accounts in Reel
  • Write compelling captions to introduce videos

Cross-Promote Post

Draw audiences from TikTok to increase Instagram views:

  • Share Reels link or embed on your TikTok profile
  • Comment on relevant TikToks to mention your IG post
  • Offer small incentive (“check my Instagram for behind-the-scenes!”)
  • Run an IG/TikTok hashtag challenge

Conclusion: How to Post TikTok Videos to Instagram Reels

Posting TikTok videos to Instagram Reels is a highly effective tactic for expanding your reach and maximizing engaging short-form video content.

In this guide, we covered a variety of methods for downloading and saving your TikTok videos in preparation for cross-posting to Instagram. TikTok’s native tools provide simple options, while third-party apps offer more advanced features.

We then looked at the different ways to actually get your TikTok footage integrated as an Instagram Reels through direct cross-posting or uploading/embedding downloads.

Finally, tips like adding relevant hashtags, locations tags, captions and optimizing aspects like audio can boost your Reels’ performance. While cross-promoting between TikTok and Instagram helps direct reciprocal traffic.

FAQs: How to Post TikTok Videos to Instagram Reels

Do I need a TikTok account to share TikTok videos to Instagram Reels?

Yes, you need an existing TikTok account with some of your own videos posted to repurpose content to Instagram Reels. You can’t simply take videos from other TikTok users without permission or attribution.

Can I edit TikTok videos before uploading as Reels?

Absolutely! We recommend customizing via trimming, text overlays, reactions, and more. This tailors videos to Instagram audiences. Use Reels editing tools or third-party video editors.

What content from TikTok tends to succeed as Instagram Reels?

Trending dances, viral challenges, cool effects, funny reaction videos and niche interest content that appeals to youth audiences often transfers effectively from TikTok over to Reels.

Do my Instagram Reels still need relevant hashtags if shared on my profile?

Yes hashtags are still key even if Reels are being viewed by your existing followers rather than in public feeds. This extends reach to interested accounts beyond your current follower base.

Can I upload the TikTok videos I’ve already downloaded to my camera roll?

Definitely, once TikTok videos are saved to your device storage or camera roll, you can access them like any other video file to upload natively into Instagram Reels.

How do I direct my Instagram followers to my TikTok account?

Promote your TikTok in your Instagram bio link section urging followers to view more videos. Also directly let followers know in Reels captions and encourage them to find you on TikTok for additional content.

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