Estimate a practical download time for a media file using its size and your connection speed.
Ideal transfer time before Wi-Fi, congestion and protocol overhead.
| File size | 10 Mbps | 25 Mbps | 50 Mbps | 100 Mbps |
|---|---|---|---|---|
| 100 MB | 1m 20s | 32s | 16s | 8s |
| 500 MB | 6m 40s | 2m 40s | 1m 20s | 40s |
| 1 GB | 13m 20s | 5m 20s | 2m 40s | 1m 20s |
Real downloads normally take longer; the interactive calculator adds an 8% transfer allowance.
Connection speed tests show a moment in time. Wi-Fi quality, network congestion, other devices and the source server can reduce the speed available to one download.
Internet speed is normally measured in megabits per second, while file size is shown in megabytes or gigabytes. Eight bits make one byte, so the calculator converts between them.
The estimate includes a small transfer overhead by default. It is still a planning figure rather than a promise, especially on mobile and shared connections.
High-resolution video can be several gigabytes. Use the estimate before starting a large transfer on limited mobile data or a connection that may be interrupted.