Storage & transfer time calculator

How long will that 10 GB backup really take? Enter the file size and your connection speed to get the exact transfer duration in hours, minutes, and seconds.

How to Storage & transfer time calculator

1. Step 1. Enter the file size and choose the unit (MB, GB, TB).
2. Step 2. Select your connection speed (4G, broadband, fiber…).
3. Step 3. Read the estimated transfer duration immediately.

Frequently asked questions

How is transfer time calculated?

Duration = file size in bits ÷ connection speed. File sizes use binary units and speeds use decimal Mbps, matching how ISPs and file systems report them.

Why is my real transfer slower than the estimate?

Protocol overhead, Wi-Fi variance, and server throttling typically add 10–20%. Treat the result as a theoretical floor.

Is the transfer time calculator free?

Yes, free and instant — great for planning backups and large uploads.