Estimate a video’s media size by multiplying its average combined audio-and-video bitrate by its runtime in seconds, then dividing by 8 to convert bits to bytes:
Estimated size in bytes = bitrate in bits per second × runtime in seconds ÷ 8
For a whole-file estimate, include audio as well as video. The result is approximate: container data and metadata add overhead, and YouTube’s recommended upload bitrates are not guarantees of a particular file size.
How to calculate video file size from bitrate and duration
- Find the average bitrate. Use the combined audio-and-video bitrate if available. If you only have separate rates, add the audio bitrate to the video bitrate.
- Convert the runtime to seconds. Multiply minutes by 60 or hours by 3,600.
- Multiply bitrate by seconds. This gives the estimated number of bits.
- Divide by 8. The result is bytes.
- Choose and label a unit. Divide bytes by 1,000,000 for decimal megabytes (MB), or by 1,048,576 for mebibytes (MiB).
The YouTube Data API distinguishes video bitrate, audio bitrate, combined uploaded-file bitrate, duration in milliseconds, and uploaded size in bytes. These are separate properties of the uploaded file, rather than interchangeable measures. YouTube Data API video resource
Free tools Windows power users keep installed
One-click scans. No signup required.
#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
Worked example: a 10-minute 1080p SDR video
YouTube recommends 8 Mbps for 1080p SDR at standard frame rates (24, 25, or 30 fps), and 384 kbps for stereo audio. Using those figures as an illustrative calculation:
- Add the rates: 8 Mbps + 0.384 Mbps = 8.384 Mbps, or 8,384,000 bits per second.
- Convert 10 minutes to seconds: 10 × 60 = 600 seconds.
- Calculate bytes: 8,384,000 × 600 ÷ 8 = 628,800,000 bytes.
- Express the result: 628.8 MB (decimal), or about 599.8 MiB (binary).
This is an estimate based on YouTube’s recommended input rates, not a promise that every 10-minute 1080p video will have that file size. YouTube labels its upload bitrates as recommendations, and the actual uploaded size is a separate file property. YouTube recommended upload encoding settings
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
Which bitrate should you use for a YouTube upload?
YouTube’s upload guidance recommends MP4 with H.264 video and AAC-LC, Opus, or Eclipsa Audio; it recommends variable bitrate and says no bitrate limit is required. Its SDR video bitrate recommendations are:
| Resolution | Standard frame rates | High frame rates |
|---|---|---|
| 720p | 5 Mbps | 7.5 Mbps |
| 1080p | 8 Mbps | 12 Mbps |
| 2160p (4K) | 35–45 Mbps | 53–68 Mbps |
The same guidance lists 384 kbps for stereo audio. These are references for preparing uploads, not required minimums, guaranteed outcomes, or descriptions of every playback version YouTube may create. Keep video and audio rates distinct until you add them for a whole-file estimate. YouTube recommended upload encoding settings
Rank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
Why the calculated size can differ from the actual file
Variable bitrate changes the data rate over time
With variable-bitrate encoding, bitrate rises and falls as the content changes. Use the average bitrate for the whole file, not a peak bitrate, to estimate total media data. A peak describes a moment or limit, not the average rate across the runtime.
Audio contributes to the total
A video-only bitrate excludes the audio stream. Add the audio rate to the video rate before calculating, or use a combined bitrate when the source provides one. For example, 8 Mbps video plus 384 kbps audio is 8.384 Mbps combined.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
Container overhead and metadata are not in the simple calculation
Bitrate multiplied by duration estimates media data. It does not separately account for the file container’s structures or metadata, so use the result as an approximation rather than an exact file-size prediction. The actual uploaded size can be checked as its own property; YouTube’s API documents uploaded size separately from combined bitrate. YouTube Data API video resource
Upload size is not playback rendition size
YouTube’s bitrate table is upload guidance. The uploaded file and a playback rendition are not the same thing, so this calculation should not be used to predict the size of a particular version served to viewers.
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Or let it run in the cloud
If the video is part of a 24/7 YouTube channel, StreamNeo can loop uploaded videos from the cloud: upload a recording or make a playlist, add your YouTube stream key, and go live. Nothing has to stay on at home, it accepts the video as uploaded up to 4K 60fps at one flat price per slot, and it automatically recovers if YouTube drops the stream. The first day is free with no card. Monthly billing is $9.99 per month. Learn more at StreamNeo, or start your free day.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
