Download Time Calculator
Calculate how long a file will take to download at a given speed.
1m 25s
85.9 seconds
Common speeds — time to download 1 GB
| Connection | Speed | Time (1 GB) |
|---|---|---|
| 3G mobile | 7.2 Mbps | 19m 53s |
| 4G LTE | 50 Mbps | 2m 51s |
| Cable 100 | 100 Mbps | 1m 25s |
| Fiber 500 | 500 Mbps | 17s |
| Fiber 1G | 1 Gbps | 8s |
How download time is calculated
Download time = file size in bits ÷ connection speed in bits per second. A 1 GB file is 8,589,934,592 bits. At 100 Mbps (100,000,000 bits/s) that takes about 85.9 seconds. Note that advertised speeds are maximums — real-world speeds are typically lower due to network overhead, congestion, and server limits.
For bandwidth unit conversions, use the Bandwidth Converter. For file size conversions, see the Byte Converter.
Private & free — this tool runs entirely in your browser.
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