Data Transfer Speed Calculator – File Transfer Time
Calculate how long it will take to transfer a file based on file size and network speed. Use this free online calculator for instant, accurate results now.
Cách tính thời gian truyền dữ liệu
The formula is: Time (seconds) = File Size (bits) ÷ Speed (bits per second). Note that file sizes are measured in bytes (1 byte = 8 bits), while network speeds are measured in bits per second (bps). This calculator handles all unit conversions automatically.
For example, transferring a 1 GB file at 100 Mbps takes approximately 80 seconds.
Tốc độ truyền trong thế giới thực
Typical transfer speeds: USB 3.0 = ~5 Gbps, Wi-Fi 6 = ~9.6 Gbps theoretical (~600 MB/s real), Gigabit Ethernet = 1 Gbps (~125 MB/s real), 5G = ~1 Gbps download. Always expect 60-80% of theoretical maximum in real-world usage due to protocol overhead, distance, and interference.
Truyền tệp lớn và lưu trữ đám mây
For multi-terabyte transfers, consider that even at 1 Gbps, 1 TB takes about 2.2 hours. Cloud uploads are often limited by upload speed (typically 10-50 Mbps for home connections). Services like AWS Snowball exist for petabyte-scale physical data transfer when network transfer would take weeks.
Frequently Asked Questions
Tại sao 1 GB không phải 1.000 MB?
In computing, 1 GB = 1,024 MB (binary). However, hard drive manufacturers use 1 GB = 1,000 MB (decimal). Our calculator uses the binary standard (1 GB = 1,024 MB = 8,192 megabits).
Sự khác biệt giữa Mbps và MB/s là gì?
Mbps (megabits per second) measures network speed. MB/s (megabytes per second) measures file transfer rate. Since 1 byte = 8 bits, 100 Mbps = 12.5 MB/s. Internet providers advertise in Mbps; file managers show MB/s.
Làm cách nào để kiểm tra tốc độ internet thực tế của tôi?
Use a speed test service like Speedtest.net or Fast.com. Run the test multiple times at different times of day for accurate results. Your actual download speed may be lower than your plan's maximum during peak hours.