Download Time Calculator
Enter a file size and connection speed to estimate download (or upload) time.
About the Download Time Calculator
Download Time Calculator estimates how long a file will take to download or upload at a given internet speed. It is useful for planning large downloads such as games and video, backups and cloud uploads.
Internet speeds are usually advertised in megabits per second (Mbps), while file sizes are shown in megabytes (MB). One byte is eight bits, so a 100 Mbps connection moves at most about 12.5 MB per second. Real speeds are lower because of overhead, congestion, Wi-Fi quality and the speed of the server, so treat the result as a best case.
How to use it
- Enter the file size and choose KB, MB or GB.
- Enter your connection speed.
- Choose the speed unit: Mbps, MB/s or Kbps.
- Read the estimated time.
Tips and good to know
- Run a speed test at the same moment for a realistic speed number.
- Upload speeds are often much lower than download speeds.
- A wired connection is usually more stable than Wi-Fi.
Frequently asked questions
Why is my real download slower?
Overhead, server limits and network load reduce actual throughput.
Are Mbps and MBps the same?
No; a capital B means bytes and is eight times bigger.
Does it handle resume or pauses?
No; it assumes steady speed.