Runs locally
Data Rate
Bytes over seconds, shown in human units.
Ctrl+Enter runs. Ctrl+Shift+Backspace clears.
Export and import are available after you sign in. Sign in
Bytes over seconds, shown in human units. Runs in the browser. Nothing is uploaded.
About this tool
Work out how fast a download, a backup or an upload actually ran. Enter the amount of data in bytes and the time it took, and get the average rate per second.
How to use it
- 01
Enter the size in bytes.
- 02
Enter the duration in seconds.
- 03
Read the average transfer rate.
FAQ
Frequently asked questions
Why is the rate lower than my internet plan?
Plans are quoted in megabits per second; divide by 8 to compare with megabytes per second.
Which units are used?
Bytes per second scaled to KB/s, MB/s or GB/s using 1024-based units.