YouTube Video File Size Calculator
Estimate the file size of a video from its length, resolution and frame rate, and how long it takes to upload at your speed. Free, no signup.
A plain number is minutes. You can also type 12:30 or 1:05:00.
Standard frame rate.
Check it with a speed test. Used for the upload time.
Use my own bitrates
The bitrate your editor shows in its export settings.
YouTube suggests 384 kbps for stereo.
About 629 MB
An estimate. Windows may show it as about 0.59 GB, because it counts in 1,024s.
- Video bitrate
- 8 Mbps
- YouTube’s recommended upload bitrate
- Audio bitrate
- 384 kbps
- Upload time
- about 4 min
- at 20 Mbps, if it never slows down
Checks
- OK: Within YouTube’s limit of 256 GB or 12 hours per video. Check YouTube Help for the current limit.
How good is this estimate?
- This is an estimate from a bitrate and a length. Your editor, the content (fast motion needs more data) and the codec all change the real size, so check the size your editor shows before you export.
- The default bitrates are the ones YouTube recommends for uploads in H.264. If you export with another codec, such as H.265, or with your own settings, type your own video bitrate.
- YouTube re-encodes everything you upload. Exporting far above its recommended bitrate mostly makes a bigger file to upload.
- Upload time assumes your link runs at the speed you enter the whole time. Real uploads are usually slower, and YouTube also needs time to process the video after the upload.
- YouTube’s limits and recommended bitrates can change. Check YouTube Help for the current ones.
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About the Video File Size Calculator
?What the file size calculator does
You enter how long your video is, the resolution and the frame rate. The tool estimates the size of the exported file and how long it takes to upload at the speed you give it.
The default bitrates are YouTube’s recommended upload bitrates for H.264. If you know your own bitrate, you can type it in. It is an estimate from arithmetic, not a measurement of a real file.
Everything runs in your browser. What you type is not sent to our server.
→How to estimate a video file size in 4 steps
Enter the length
A plain number is minutes. You can also type 12:30 or 1:05:00.
Choose the resolution and frame rate
The video bitrate comes from YouTube’s recommendation for that setting. Frame rates of 48 and above use about 1.5 times the bitrate.
Add your upload speed
Use the figure from a speed test. It is used only for the upload time.
Use your own bitrate if you have one
Open “Use my own bitrates” and type the video bitrate from your editor’s export settings. This is the most accurate way, and the way to handle H.265.
✓What is in the tool
Size and bitrate breakdown
The estimated size, and the video and audio bitrates it is based on.
YouTube’s recommended bitrates
Used by default for each resolution, with a higher rate for high frame rates.
Your own bitrate
Type the bitrate from your export settings instead.
Upload time
Based on the upload speed you enter.
Limit check
Checks the estimate against YouTube’s limit per video.
Both unit styles
Shows the standard gigabyte figure and the smaller number Windows displays.
★Examples
A 10-minute 1080p video
At 30 fps with the default bitrates.
Example:
Video at 8 Mbps plus audio at 384 kbps comes to about 629 MB.
A one-hour 4K video
At 30 fps.
Example:
At about 40 Mbps plus audio, the estimate is about 18 GB, which could take a few hours to upload on a slow connection.
A file in H.265
Open “Use my own bitrates” and type the export bitrate.
Example:
If your editor exports 1080p at 4 Mbps, enter 4, and the tool works out the size from that.
♥Limits to know about
An estimate
A real export varies with your editor, the content and the codec.
Upload time is optimistic
It assumes your connection never slows down, and it ignores YouTube’s processing time.
YouTube can change its numbers
Check YouTube Help for the current recommended bitrates and limits.