Video File Size Calculator
Fast, accurate and free online size file wideo calculator tool running directly in your browser.
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1Enter data
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2Click the button
The tool will immediately process your data in the browser. -
3Get the result
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Wondering how big your video will be after rendering or uploading? Video file size calculator available atwebp.plis a fast and reliable tool that allows you to calculate the final size of the material based on parameters such as resolution, bitrate, recording length or frame rate. You will know the exact result in a few seconds, without having to install any program.
Why calculate video file size?
Controlling file size is a key element in video production - especially when you publish videos online, in the cloud, or send them to clients. Knowing how large the final file will be, you can choose the optimal quality without exceeding the limits of servers, streaming platforms or physical media. In practice, this means saving time, disk space and bandwidth.
How does the video file size calculator work?
The calculator uses a simple but precise algorithm. You enter the following data:bitrate(in kbps),recording length(in minutes or seconds), and possibly separate bitrates for image and sound. The tool automatically converts these values, showing the result in megabytes (MB) and gigabytes (GB).
Size (MB) = (bitrate × time [s]) ÷ (8 × 1024)You can also enter the video codec (e.g. H.264, HEVC, VP9) and container (MP4, MOV, MKV) to get a more precise estimate - since different codecs offer different compression levels for the same quality.
Most common video parameters
Popular resolutions
- HD – 1280 × 720 pixels
- Full HD – 1920 × 1080 pixels
- 2K – 2560 × 1440 pixels
- 4K UHD – 3840 × 2160 pixels
- 8K – 7680 × 4320 pixels
Average bitrate (kbps)
- HD – 5,000 kbps
- Full HD – 8,000 kbps
- 4K – 25,000 kbps
- 8K – 80,000 kbps
Practical example
Suppose you want to calculate the size of a 1080p video of 10 minutes in length, with a bitrate of 8,000 kbps. Just enter your data and the calculator will show the result:
Size = (8,000 × 600) ÷ (8 × 1024) ≈ 585 MBIf you add 192 kbps audio, the total size increases slightly - to about 599 MB. This allows you to easily estimate how much space you need on your disk or pendrive before you start exporting.
The most important functions of the calculator
- Quick conversions– immediate result without loading the page.
- Support for various codecs– H.264, HEVC, VP9, AV1.
- Video and audio bitrate separately– for greater precision.
- Result in MB and GB– with the option of rounding to whole units.
- Simple interface– friendly to users of all levels of knowledge.
How to choose bitrate for quality?
Bitrate is the amount of data processed per second. The higher the bitrate, the better the quality, but also the larger the file. For example, 4K HDR footage requires up to 25,000 kbps, while SD video may look good at 2,000 kbps. If you create content for the Internet, use high-compression codecs such as HEVC or VP9 - they allow you to reduce the file size by up to 40% without losing quality.
Why is it worth using the calculator from webp.pl?
The tool works completely online, is free and does not require installation. All calculations are performed locally in the browser, so your data remains private. The video file size calculator is part of the extensiveWebP Toolstoolkit - a platform offering dozens of practical calculators for creators, graphic designers and editors.
Frequently Asked Questions (FAQ)
Can I use the calculator for long videos?
Yes, the calculator easily calculates the size even for files exceeding several hours in length. You can enter the time in seconds or minutes.
Does the result depend on the codec?
Yes, because different codecs offer different levels of compression. For an identical bitrate, HEVC will create a smaller file than H.264.
Can I include audio tracks?
Yes, the calculator allows you to enter a separate bitrate for the audio, which allows you to accurately estimate the final size of the video with sound.
Summary:The Video File Size Calculator is an indispensable tool for anyone who creates or edits videos. It helps you select optimal quality parameters and avoid problems with sending, archiving and publishing materials.