X Video File Size Estimator
Calculate and estimate video file sizes and bitrates before publishing.
Premium User Estimator
Enable to calculate constraints for larger files (up to 2 hours, 8GB uploads)
⚙️ Calculator Controls
📊 Estimate Overview
X.com Compliance Check
Fully compliant with standard X uploading rules!
Recommended Video Codec for X
- Container: MP4 format is highly recommended.
- Video Codec: H.264 / AVC Progressive profile is ideal.
- Audio Codec: AAC-LC (Low Complexity) stereo audio channel.
- Pixel Aspect: Standard square 1:1 pixel frames.
What is the X (Twitter) Video File Size & Bitrate Estimator?
Preparing high-quality videos for X (formerly Twitter) requires balancing resolution, visual fidelity, and upload limits. X imposes strict constraints on both maximum duration and total file size. For free users, these limits are 140 seconds and 512 MB, respectively. X Premium subscribers can upload longer videos, but still face size and resolution boundaries.
Our free X Video File Size Estimator helps content creators calculate their projected file size before rendering and compressing videos in editing software. It calculates the theoretical footprint by parsing your video duration, target resolution (1080p down to 360p), frame rate (30 vs 60 FPS), and audio fidelity channels.
📊 Custom Bitrate Breakdown
See exactly how video streams and audio tracks contribute individually to your overall megabytes.
🛡️ Built-in Compliance Checker
Instantly check if your video meets X\'s requirements for standard free users or premium subscribers.
How to Estimate Video Upload Sizes for X
- Input Video Duration: Use the range slider to select the duration of your video file in minutes and seconds.
- Select Resolution: Choose from 1080p, 720p, 480p, or 360p. Each resolution triggers standard H.264 bitrate models.
- Configure FPS (Frame Rate): Toggle between 30 FPS and 60 FPS to calculate smooth high-motion size changes.
- Set Audio Profile: Select 128 kbps (High Fidelity), 96 kbps (Balanced), or 64 kbps (Voice/Mono) audio profiles.
- Review Compliance: The live checker will flash green if compliant, or issue warning/error indicators if it exceeds limits.
Frequently Asked Questions
What are the standard video requirements on X?
X officially recommends the MP4 container format, H.264/AVC progressive video codec, AAC-LC stereo audio codec, and standard square 1:1 pixels.
How does X Premium affect video uploading constraints?
Standard users are limited to 140 seconds and 512 MB. Premium subscribers can upload videos up to 2 hours long (1080p) with a file size limit of 8 GB using the web interface.
Why is my actual compressed file size different?
Our calculator uses standard recommended bitrates (e.g. 5 Mbps for 1080p). Your actual file size depends on the complexity of your video footage and the specific exporter/encoder settings used in software like Premiere Pro, FFMPEG, or CapCut.