Calculator tool
How this calculator works
The result depends on the numbers you enter and the assumptions shown below.
Transfer time = File size / Bandwidth. Remember: storage uses bytes (MB, GB) while network speed uses bits (Mbps, Gbps). 1 byte = 8 bits.
Review the inputs carefully and treat the output as an estimate. For decisions involving money, taxes, health, law, or security, compare the result with trusted professional guidance when needed.
Frequently asked questions
Why is my download slower than my plan?
ISP speeds are in megabits (Mbps), but file sizes are in megabytes (MB). 100 Mbps ÷ 8 = 12.5 MB/s. Overhead, Wi-Fi, and server limits further reduce real-world speeds.
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