Trim Audio for Instagram Reels and TikTok Free
- Instagram Reels use audio up to 90 seconds. TikTok up to 10 minutes (15-60s performs best).
- Fox Audio Trimmer cuts any MP3, WAV, or AAC file to the exact length you need.
- Works in Safari on iPhone and Chrome on Android — no app needed.
- No watermark on the audio output — clean file ready for direct upload.
Table of Contents
How Long Can Audio Be on Each Social Platform?
Know your target length before trimming:
- Instagram Reels: Up to 90 seconds of audio. Best performance is typically at 15-30 seconds.
- Instagram Stories: Audio clips follow the video — each Story card is 15 seconds.
- TikTok: Up to 10 minutes, but short clips (15-60 seconds) get higher completion rates and better algorithmic reach.
- YouTube Shorts: Up to 60 seconds. For music-backed Shorts, you want a hook-first clip that lands immediately.
- Facebook Reels: Up to 60 seconds.
How to Find the Best Section of a Song for Social Media
Social media audio lives or dies in the first 2 seconds — viewers decide whether to keep watching before the first bar finishes. Principles for picking the section:
- Start at the hook or chorus: The most identifiable part of the song, hits immediately without buildup.
- Avoid intros: A song intro that builds over 8 bars sounds flat on social media where attention is measured in seconds.
- Match energy to the visual: High-tempo drop for action content, melodic verse for storytelling, beat switch for transitions.
- End with energy, not a fade: A clip that ends on a strong beat feels intentional. One that fades out mid-phrase feels unfinished.
How to Cut Audio for Instagram and TikTok in 4 Steps
- Open Fox Audio Trimmer in your browser on any device — no app needed.
- Upload your audio file — MP3, WAV, M4A, AAC, OGG, and FLAC all work.
- Find your start point using the playback. Set the start time to where you want the audio to begin — typically the chorus or the drop.
- Set the end time based on your target platform: 15s for Stories, 30s for a short Reel, 60s for TikTok or Shorts. Download as MP3.
The downloaded MP3 is ready to use as the audio track when you create your Reel or TikTok in the native app.
How to Add a Trimmed Audio Clip to Reels and TikTok
Instagram Reels: When creating a Reel, tap Add Audio or Music. Select Browse and choose Your Audio or From Files. Select the trimmed MP3 from your phone storage. On some iOS versions, you may need to save the MP3 to your Files app first.
TikTok: Record or upload your video first. On the edit screen, tap Add Sound or Sounds. Select My Uploads or From Files to use your own trimmed audio. TikTok also allows syncing a clip to the audio after adding it.
Note: Both platforms also have their own in-app audio libraries. Use your own trimmed audio when you need a specific section of a specific track, or when using audio that is not in the platform's library.
Trim Your Audio for Reels and TikTok — Free
Fox Audio Trimmer cuts any audio to the exact seconds you need. Works on iPhone and Android, no app needed.
Open Free Audio TrimmerFrequently Asked Questions
Can I trim audio for TikTok on my phone without an app?
Yes. Fox Audio Trimmer works in Safari on iPhone and Chrome on Android. Open it in your mobile browser, upload your audio, set your cut to 15-60 seconds, and download the trimmed clip directly on your phone.
What audio format should I use for Instagram Reels and TikTok?
MP3 is the most universally accepted format for both platforms. Download your trimmed clip as MP3 from Fox Audio Trimmer for direct compatibility.
Can I use a song I own to make a Reel or TikTok?
You can use the audio in your Reel or TikTok, but copyright still applies on social platforms. Songs that are not licensed by the platform may be muted or removed after posting. Fox Audio Trimmer has no restrictions on what audio you upload — platform content policies are separate from the trimming tool.
How do I make sure the trimmed audio starts on the beat?
Use the playback in Fox Audio Trimmer to navigate to the exact beat you want to start on. Listen to a few seconds before your intended start point to confirm the timing. Adjusting the start time by a fraction of a second can make the difference between a tight cut and one that feels off-beat.
