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Download Time Calculator

Enter file size and internet speed to estimate download time. Designed to be easy on mobile.

Download Time Calculator Mobile-first UI 1000 scenario pages

Download time calculator

Enter file size and internet speed to estimate download time instantly.

File size

Example: 1500 MB or 2 GB

Unit

File size unit (binary). Internet speed is Mbps.

Internet speed (Mbps)

Example: 25, 100, 300

Tip

Use query params to prefill inputs.

Estimated download time

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Based on the inputs above.

Scenario summary

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File size	—
Internet speed	—
Calculated seconds	—

Note: This estimate assumes a steady connection and does not include overhead, congestion, Wi‑Fi quality, or server limits.

Ad slot (replace with AdSense later)

Common questions

Mbps vs MB/s: Mbps is megabits per second. MB/s is megabytes per second (≈ Mbps ÷ 8).
Why does my download take longer? Wi‑Fi signal, congestion, and server limits can reduce speed.
Binary vs decimal: File size is binary (1024), speed is decimal (1,000,000).

Explore scenarios

Open a prefilled scenario page, then tweak values in the calculator:

Download 1 GB at 25 Mbps Download 5 GB at 100 Mbps Download 10 GB at 300 Mbps Download 700 MB at 50 Mbps

Ad slot (tool page)