How to add captions to Reels and TikToks for free, even after posting

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Captions put your words on screen, so your video still makes sense with the sound off. TikTok's help page adds that its auto captions can help viewers who are deaf or hard of hearing. Both apps also call the text under your post a caption, but this guide covers the words on the video.

Our take: free captions, checked word by word

The captions built into TikTok and Instagram are enough for most talking videos, including your 10-minute posts. Viewers won't care about a plain font. They'll notice a wrong word, or a line hidden under the like button. So spend your time reading your captions back, and put them where nothing covers them.

Pay for an app only when captions are the step that slows you down. Maybe you post the same video on both apps every week, or animated captions are part of your style.

Ways to add captions, compared

Which one to pick: talking to camera for one app? Use that app's captions. Posting the same video on TikTok and Reels? Caption it once in CapCut or an app and upload that file to both. For text-on-screen or faceless videos, type by hand, since the text is the video.

How to add captions to TikTok videos

TikTok has 2 kinds of captions. Creator captions are the ones you add with the Captions button and can style. Auto-generated captions are made by TikTok for eligible videos, and you can edit them after you post. Steps checked against TikTok's Help Center on 4 October 2026.

In the TikTok app

1. 1

   Open the editor

   Tap + at the bottom, record or upload your video, and go on to the preview screen.

2. 2

   Tap Captions

   You'll find Captions on the side panel. TikTok turns your speech into text, and the first time, it asks you to opt in to the feature.

3. 3

   Fix and style the lines

   Read each line and fix any word it got wrong. You can also change the font style and color.

4. 4

   Save and post

   Tap Save and finish your post as usual.

One more setting: on the post screen, tap More options, then Select video language, and pick the language you speak, like English or Spanish. TikTok uses it for your auto-generated captions.

How to add captions to TikTok after posting

1. 1

   Open the posted video

   In the TikTok app, open the video you posted.

2. 2

   Tap the caption

   Tap the caption on your video, then tap Edit captions.

3. 3

   Fix and save

   Fix what's wrong, delete what you don't need, then tap Save at the top.

This works only for auto-generated captions, and TikTok doesn't say which videos qualify. Styled captions and text go on while you create a post. If your video already has views, leave it and caption the next one, since a re-upload starts from zero.

How to add captions to a TikTok video on PC

TikTok's help pages describe its caption tools only on phones. The free route on a computer: upload in TikTok Studio at tiktok.com/tiktokstudio, then check the auto-generated captions from your phone, since TikTok says it makes them for eligible uploads. Styled captions go in before you upload:

1. 1

   Caption it in a computer editor

   Open your video in CapCut's desktop app (Windows or Mac) or at capcut.com and go to Text, then Auto captions. Browser editors like Kapwing and Submagic work too.

2. 2

   Fix the words

   Choose the language you speak and let it run. To fix a line in CapCut, double-click its caption block (desktop app) or click it and choose Edit captions (capcut.com). For its web version, CapCut recommends Chrome or Edge.

3. 3

   Export

   Export an MP4 at 720x1280 or larger. TikTok's web upload takes MP4 or WebM files up to 30 minutes long and under 10 GB.

4. 4

   Upload

   Go to tiktok.com/tiktokstudio, log in, choose Upload and post your video.

5. 5

   Check on your phone

   If TikTok adds auto-generated captions as well, you can edit or remove them in the app so the same words don't show twice.

How to add captions to Reels on Instagram

Instagram gives you 2 free options. The Captions sticker puts styled captions on the video itself. Closed captions are automatic text Instagram writes out at the bottom of your reel. Steps checked against Instagram's Help Center on stickers and closed captions on 4 October 2026.

With the Captions sticker

1. 1

   Start a reel

   Tap + (Create) at the top or swipe right in your feed, tap Reel, then record or pick a clip.

2. 2

   Add the sticker

   Tap Stickers at the top and choose Captions. Instagram transcribes your audio.

3. 3

   Change the look

   Tap the captions, then use the color picker at the top or the options at the bottom to change the color and font.

4. 4

   Fix wrong words

   Tap the captions twice, then tap any word that's wrong to edit it.

5. 5

   Move it

   Drag the captions above the bottom third of the screen and away from the buttons on the right, so they don't cover them.

With closed captions

1. 1

   Get to the last screen

   Tap + (Create), then Reel. Pick your video, tap Next, then Next again.

2. 2

   Turn them on

   At the bottom, tap More options and switch on Enable closed captions. There's a Translate closed captions switch there too.

How to add captions to Reels after posting

1. 1

   Open the reel

   Tap your profile picture in the bottom right and open the reel.

2. 2

   Go to Edit

   Tap the three-dot Options menu, then Edit. If you don't see Edit, look under Manage.

3. 3

   Switch captions on

   Tap More options (Advanced settings on Android) and turn on Enable closed captions.

Older reels follow your account's caption settings, so captions may already be on. Instagram's help pages don't describe a way to add the Captions sticker or text to a reel you've already shared.

How to use auto captions in CapCut

CapCut is a separate editing app: you caption your video there, export it and upload the file. Steps from CapCut's help article of 3 February 2026. Menu names can shift between versions.

1. 1

   Generate

   Open your project, tap Text, then Auto captions, and pick the audio source.

2. 2

   Edit

   Tap a caption clip on the timeline, tap Edit captions, then tap any line to fix it.

3. 3

   Split long lines

   Move the playhead to a pause and tap the scissors icon to cut a caption in two.

4. 4

   Export and upload

   Play it once with the sound on to check the timing, then export and post the file.

Before you style a whole video, look for the Pro badge. CapCut says projects with Pro-marked templates or assets need a subscription to export. Its standard vs Pro page (23 September 2026) lists the auto caption generator as a Pro tool, though other CapCut pages call auto captions free.

Tips for captions people actually read

• Stay inside the safe zone. Meta's Reels ads guide suggests keeping text out of the top 14%, the bottom 35% and 6% on each side, so the profile icon and buttons don't cover it. Regular posts have your username and post text at the bottom and buttons down the right. In a talking video, that puts captions just under your chin.
• Leave extra room on TikTok if you write long descriptions. TikTok's ad specs say the safe area depends partly on how long the caption under the video is.
• Go bigger than feels right. Check the size on your phone at arm's length, even if you edited on a laptop.
• Split at natural pauses. Keep 1 short phrase per caption, 2 lines at most. "3 serums / I'd buy again" reads better than "3 serums I'd / buy again".
• Read every line with the sound off. CapCut's help says speech recognition can mishear words because of background noise, accents, fast speech or poor audio. Check names and niche words first, like your name, a product or a Romanian deadlift.
• Add music after the captions. CapCut suggests removing background music before you generate captions, so the tool hears your voice. A script helps too: our teleprompter guide has 10 you can paste.
• Keep captions off what you're showing. If the video is about a lip color or a sketch, move the captions so they don't cover it.
• Caption a batch in one sitting. Videos from the same batch day look like a set when they share one style.

Common caption mistakes

• Posting auto captions unread. A misheard word in your first line is the one everybody sees.
• The same words twice. If you burned captions in, leave Instagram's closed captions off, or remove TikTok's auto-generated ones, so viewers don't get 2 sets.
• Whole sentences on screen. Anything past 2 lines covers the shot and drifts out of sync with your voice.
• Styling with Pro items in CapCut. CapCut asks for a subscription at export, after you've done the work. Check for the Pro badge first.
• The wrong video language on TikTok. Your auto-generated captions follow the language you pick under More options, so set the one you speak.
• Reposting a video that already has views, just to add captions. You'd start again from zero likes and comments.