Download Time Calculator

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Enter file size + speed. The estimate shows up big and instantly. Tip: ISP plans are usually Mbps (megabits), while downloads often show MB/s (megabytes).

Calculator

Updates as you type

Speed in Mbps (plan speed) Speed in MB/s (real speed)

File size

Size unit

Speed (Mbps)

Overhead

Rounding

Heads up: 100 Mbps ≈ 12.5 MB/s (divide by 8).

Optional: Upload speed shortcut

Paste your upload Mbps and reuse it

Upload speed (Mbps)

Clicking “Use upload speed” sets the calculator speed to that value (in Mbps mode).

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